== sanity test 398b: DIO and buffer IO race ============== 15:51:53 (1787860313) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.85884 s, 7.3 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145870: Thu Aug 27 15:54:08 2026 read: IOPS=13, BW=53.6KiB/s (54.9kB/s)(5992KiB/111763msec) clat (usec): min=31, max=1166.8k, avg=36125.45, stdev=40211.73 lat (usec): min=31, max=1166.8k, avg=36127.06, stdev=40212.20 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 93], | 20.00th=[ 16319], 30.00th=[ 20841], 40.00th=[ 25297], | 50.00th=[ 30016], 60.00th=[ 35390], 70.00th=[ 43254], | 80.00th=[ 53216], 90.00th=[ 67634], 95.00th=[ 82314], | 99.00th=[ 125305], 99.50th=[ 164627], 99.90th=[ 316670], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 119, per=25.22%, avg=53.47, stdev=21.33, samples=218 iops : min= 1, max= 29, avg=12.73, stdev= 5.36, samples=218 write: IOPS=14, BW=56.3KiB/s (57.7kB/s)(6296KiB/111763msec); 0 zone resets clat (usec): min=881, max=580551, avg=36277.26, stdev=39776.90 lat (usec): min=881, max=580552, avg=36279.74, stdev=39776.93 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1352], 20.00th=[ 3163], | 30.00th=[ 7177], 40.00th=[ 16319], 50.00th=[ 26608], 60.00th=[ 36439], | 70.00th=[ 47973], 80.00th=[ 63177], 90.00th=[ 83362], 95.00th=[104334], | 99.00th=[170918], 99.50th=[198181], 99.90th=[308282], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 7, max= 144, per=25.48%, avg=56.56, stdev=22.26, samples=217 iops : min= 1, max= 36, avg=13.50, stdev= 5.61, samples=217 lat (usec) : 50=1.20%, 100=3.74%, 250=0.16%, 500=0.03%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=7.58%, 4=4.23%, 10=6.12%, 20=12.43%, 50=38.44% lat (msec) : 100=21.58%, 250=4.07%, 500=0.13%, 750=0.03%, 2000=0.03% cpu : usr=0.06%, sys=5.78%, ctx=6459, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145872: Thu Aug 27 15:54:08 2026 read: IOPS=13, BW=52.6KiB/s (53.9kB/s)(5940KiB/112828msec) clat (usec): min=31, max=693373, avg=36769.18, stdev=32518.85 lat (usec): min=31, max=693374, avg=36771.69, stdev=32518.52 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 57], 10.00th=[ 155], 20.00th=[ 16319], | 30.00th=[ 21103], 40.00th=[ 25560], 50.00th=[ 31065], 60.00th=[ 36963], | 70.00th=[ 44827], 80.00th=[ 54789], 90.00th=[ 69731], 95.00th=[ 87557], | 99.00th=[137364], 99.50th=[162530], 99.90th=[217056], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 5, max= 120, per=24.84%, avg=52.67, stdev=21.06, samples=221 iops : min= 1, max= 30, avg=12.53, stdev= 5.27, samples=221 write: IOPS=14, BW=56.3KiB/s (57.6kB/s)(6348KiB/112828msec); 0 zone resets clat (usec): min=947, max=1226.7k, avg=36359.28, stdev=46955.60 lat (usec): min=948, max=1226.7k, avg=36361.06, stdev=46955.38 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1205], 10.00th=[ 1631], | 20.00th=[ 3556], 30.00th=[ 8094], 40.00th=[ 16450], | 50.00th=[ 27657], 60.00th=[ 35914], 70.00th=[ 49021], | 80.00th=[ 62653], 90.00th=[ 81265], 95.00th=[ 100140], | 99.00th=[ 152044], 99.50th=[ 179307], 99.90th=[ 333448], | 99.95th=[1233126], 99.99th=[1233126] bw ( KiB/s): min= 5, max= 184, per=25.39%, avg=56.36, stdev=23.36, samples=221 iops : min= 1, max= 46, avg=13.45, stdev= 5.86, samples=221 lat (usec) : 50=0.72%, 100=3.91%, 250=0.33%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=6.25%, 4=5.14%, 10=6.09%, 20=12.76%, 50=37.27% lat (msec) : 100=23.08%, 250=3.91%, 500=0.10%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.84%, ctx=6322, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145874: Thu Aug 27 15:54:08 2026 read: IOPS=13, BW=53.8KiB/s (55.1kB/s)(6028KiB/112028msec) clat (usec): min=28, max=355162, avg=35106.97, stdev=28318.82 lat (usec): min=28, max=355163, avg=35112.47, stdev=28316.94 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 115], 20.00th=[ 15795], | 30.00th=[ 20579], 40.00th=[ 24511], 50.00th=[ 29492], 60.00th=[ 35390], | 70.00th=[ 43254], 80.00th=[ 53216], 90.00th=[ 67634], 95.00th=[ 81265], | 99.00th=[123208], 99.50th=[162530], 99.90th=[299893], 99.95th=[354419], | 99.99th=[354419] bw ( KiB/s): min= 7, max= 111, per=25.58%, avg=54.23, stdev=21.98, samples=217 iops : min= 1, max= 27, avg=12.92, stdev= 5.52, samples=217 write: IOPS=13, BW=55.9KiB/s (57.2kB/s)(6260KiB/112028msec); 0 zone resets clat (usec): min=959, max=1254.9k, avg=37415.57, stdev=49402.87 lat (usec): min=960, max=1254.9k, avg=37421.10, stdev=49401.68 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1500], | 20.00th=[ 3752], 30.00th=[ 7504], 40.00th=[ 16909], | 50.00th=[ 27132], 60.00th=[ 36963], 70.00th=[ 49546], | 80.00th=[ 64226], 90.00th=[ 87557], 95.00th=[ 107480], | 99.00th=[ 152044], 99.50th=[ 181404], 99.90th=[ 429917], | 99.95th=[1249903], 99.99th=[1249903] bw ( KiB/s): min= 7, max= 124, per=25.11%, avg=55.74, stdev=21.79, samples=219 iops : min= 1, max= 31, avg=13.30, stdev= 5.48, samples=219 lat (usec) : 50=1.20%, 100=3.58%, 250=0.46%, 500=0.10%, 1000=0.20% lat (msec) : 2=6.51%, 4=4.20%, 10=7.49%, 20=12.01%, 50=37.83% lat (msec) : 100=21.97%, 250=4.23%, 500=0.20%, 2000=0.03% cpu : usr=0.07%, sys=5.52%, ctx=6261, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145877: Thu Aug 27 15:54:08 2026 read: IOPS=13, BW=54.8KiB/s (56.1kB/s)(6052KiB/110414msec) clat (usec): min=22, max=1309.3k, avg=35929.06, stdev=42600.87 lat (usec): min=22, max=1309.3k, avg=35930.15, stdev=42600.86 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 91], | 20.00th=[ 15795], 30.00th=[ 20317], 40.00th=[ 24773], | 50.00th=[ 29492], 60.00th=[ 35390], 70.00th=[ 42206], | 80.00th=[ 54264], 90.00th=[ 69731], 95.00th=[ 85459], | 99.00th=[ 125305], 99.50th=[ 145753], 99.90th=[ 229639], | 99.95th=[1317012], 99.99th=[1317012] bw ( KiB/s): min= 7, max= 120, per=26.03%, avg=55.19, stdev=22.72, samples=215 iops : min= 1, max= 30, avg=13.16, stdev= 5.72, samples=215 write: IOPS=14, BW=56.5KiB/s (57.8kB/s)(6236KiB/110414msec); 0 zone resets clat (usec): min=923, max=279142, avg=35639.56, stdev=36879.47 lat (usec): min=924, max=279142, avg=35641.88, stdev=36879.33 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1172], 10.00th=[ 1418], 20.00th=[ 3392], | 30.00th=[ 6652], 40.00th=[ 15270], 50.00th=[ 25560], 60.00th=[ 35390], | 70.00th=[ 46924], 80.00th=[ 63177], 90.00th=[ 87557], 95.00th=[104334], | 99.00th=[149947], 99.50th=[177210], 99.90th=[256902], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 127, per=25.46%, avg=56.52, stdev=21.80, samples=216 iops : min= 1, max= 31, avg=13.49, stdev= 5.52, samples=216 lat (usec) : 50=0.91%, 100=4.23%, 250=0.52%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.20% lat (msec) : 2=7.23%, 4=4.17%, 10=6.90%, 20=12.76%, 50=37.86% lat (msec) : 100=20.64%, 250=4.36%, 500=0.07%, 2000=0.03% cpu : usr=0.07%, sys=5.84%, ctx=6270, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=213KiB/s (218kB/s), 52.6KiB/s-54.8KiB/s (53.9kB/s-56.1kB/s), io=23.4MiB (24.6MB), run=110414-112828msec WRITE: bw=223KiB/s (228kB/s), 55.9KiB/s-56.5KiB/s (57.2kB/s-57.8kB/s), io=24.6MiB (25.7MB), run=110414-112828msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145871: Thu Aug 27 15:56:14 2026 read: IOPS=6, BW=25.3KiB/s (25.9kB/s)(5992KiB/237084msec) clat (msec): min=5, max=1194, avg=30.73, stdev=45.16 lat (msec): min=5, max=1194, avg=30.74, stdev=45.16 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 40], 90.00th=[ 65], 95.00th=[ 89], | 99.00th=[ 157], 99.50th=[ 220], 99.90th=[ 388], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 103, per=27.77%, avg=27.77, stdev=18.18, samples=419 iops : min= 1, max= 25, avg= 6.34, stdev= 4.57, samples=419 write: IOPS=6, BW=26.6KiB/s (27.2kB/s)(6296KiB/237084msec); 0 zone resets clat (msec): min=30, max=681, avg=121.02, stdev=56.38 lat (msec): min=30, max=681, avg=121.03, stdev=56.38 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 77], | 30.00th=[ 87], 40.00th=[ 96], 50.00th=[ 107], 60.00th=[ 121], | 70.00th=[ 136], 80.00th=[ 159], 90.00th=[ 199], 95.00th=[ 230], | 99.00th=[ 296], 99.50th=[ 330], 99.90th=[ 409], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 55, per=24.99%, avg=26.24, stdev=11.45, samples=465 iops : min= 1, max= 13, avg= 5.95, stdev= 2.91, samples=465 lat (msec) : 10=5.99%, 20=20.28%, 50=16.41%, 100=26.43%, 250=29.10% lat (msec) : 500=1.73%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.19%, ctx=5242, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145873: Thu Aug 27 15:56:14 2026 read: IOPS=6, BW=24.9KiB/s (25.5kB/s)(5940KiB/238330msec) clat (msec): min=4, max=1301, avg=30.68, stdev=48.04 lat (msec): min=4, max=1301, avg=30.68, stdev=48.04 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 40], 90.00th=[ 66], 95.00th=[ 88], | 99.00th=[ 161], 99.50th=[ 215], 99.90th=[ 558], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 110, per=27.33%, avg=27.33, stdev=18.73, samples=421 iops : min= 1, max= 27, avg= 6.22, stdev= 4.72, samples=421 write: IOPS=6, BW=26.6KiB/s (27.3kB/s)(6348KiB/238330msec); 0 zone resets clat (msec): min=35, max=718, avg=121.15, stdev=57.12 lat (msec): min=35, max=718, avg=121.16, stdev=57.12 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 75], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 109], 60.00th=[ 123], | 70.00th=[ 138], 80.00th=[ 157], 90.00th=[ 197], 95.00th=[ 224], | 99.00th=[ 305], 99.50th=[ 342], 99.90th=[ 584], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 56, per=25.12%, avg=26.38, stdev=11.15, samples=466 iops : min= 1, max= 14, avg= 5.99, stdev= 2.84, samples=466 lat (msec) : 10=6.45%, 20=20.25%, 50=15.30%, 100=26.53%, 250=29.85% lat (msec) : 500=1.50%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.20%, ctx=5309, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145875: Thu Aug 27 15:56:14 2026 read: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6028KiB/238422msec) clat (msec): min=4, max=559, avg=31.58, stdev=35.08 lat (msec): min=4, max=559, avg=31.58, stdev=35.08 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 45], 90.00th=[ 69], 95.00th=[ 92], | 99.00th=[ 155], 99.50th=[ 205], 99.90th=[ 380], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 119, per=27.31%, avg=27.31, stdev=18.82, samples=428 iops : min= 1, max= 29, avg= 6.22, stdev= 4.75, samples=428 write: IOPS=6, BW=26.3KiB/s (26.9kB/s)(6260KiB/238422msec); 0 zone resets clat (msec): min=36, max=1421, avg=121.58, stdev=65.95 lat (msec): min=36, max=1421, avg=121.58, stdev=65.95 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 67], 20.00th=[ 77], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 107], 60.00th=[ 120], | 70.00th=[ 134], 80.00th=[ 157], 90.00th=[ 197], 95.00th=[ 232], | 99.00th=[ 305], 99.50th=[ 368], 99.90th=[ 726], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7, max= 56, per=24.67%, avg=25.90, stdev=11.46, samples=467 iops : min= 1, max= 14, avg= 5.87, stdev= 2.92, samples=467 lat (msec) : 10=5.76%, 20=20.02%, 50=15.14%, 100=28.09%, 250=28.87% lat (msec) : 500=2.02%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.20%, ctx=5378, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145876: Thu Aug 27 15:56:14 2026 read: IOPS=6, BW=25.6KiB/s (26.2kB/s)(6052KiB/236241msec) clat (msec): min=4, max=409, avg=29.36, stdev=30.21 lat (msec): min=4, max=409, avg=29.36, stdev=30.21 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 64], 95.00th=[ 87], | 99.00th=[ 142], 99.50th=[ 176], 99.90th=[ 342], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 7, max= 119, per=28.46%, avg=28.46, stdev=18.13, samples=413 iops : min= 1, max= 29, avg= 6.51, stdev= 4.58, samples=413 write: IOPS=6, BW=26.4KiB/s (27.0kB/s)(6236KiB/236241msec); 0 zone resets clat (msec): min=36, max=1428, avg=122.71, stdev=67.02 lat (msec): min=36, max=1428, avg=122.71, stdev=67.02 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 77], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 108], 60.00th=[ 121], | 70.00th=[ 138], 80.00th=[ 159], 90.00th=[ 194], 95.00th=[ 232], | 99.00th=[ 321], 99.50th=[ 409], 99.90th=[ 592], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 56, per=24.90%, avg=26.14, stdev=11.43, samples=462 iops : min= 1, max= 14, avg= 5.93, stdev= 2.91, samples=462 lat (msec) : 10=6.45%, 20=19.47%, 50=16.67%, 100=26.79%, 250=28.74% lat (msec) : 500=1.79%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.17%, ctx=5177, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=101KiB/s (103kB/s), 24.9KiB/s-25.6KiB/s (25.5kB/s-26.2kB/s), io=23.4MiB (24.6MB), run=236241-238422msec WRITE: bw=105KiB/s (108kB/s), 26.3KiB/s-26.6KiB/s (26.9kB/s-27.3kB/s), io=24.6MiB (25.7MB), run=236241-238422msec mix direct rw 16384 by fio with 4 jobs... mix buffer rw 16384 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145936: Thu Aug 27 15:56:45 2026 read: IOPS=18, BW=294KiB/s (301kB/s)(5920KiB/20127msec) clat (usec): min=34, max=122579, avg=28778.99, stdev=21739.45 lat (usec): min=34, max=122580, avg=28780.05, stdev=21739.40 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 51], 10.00th=[ 59], 20.00th=[ 101], | 30.00th=[ 17957], 40.00th=[ 22676], 50.00th=[ 28967], 60.00th=[ 33817], | 70.00th=[ 39584], 80.00th=[ 45351], 90.00th=[ 54264], 95.00th=[ 63701], | 99.00th=[ 96994], 99.50th=[101188], 99.90th=[122160], 99.95th=[122160], | 99.99th=[122160] bw ( KiB/s): min= 122, max= 605, per=26.32%, avg=291.13, stdev=91.52, samples=39 iops : min= 7, max= 37, avg=17.54, stdev= 5.76, samples=39 write: IOPS=19, BW=316KiB/s (324kB/s)(6368KiB/20127msec); 0 zone resets clat (usec): min=1374, max=237467, avg=23322.10, stdev=27977.56 lat (usec): min=1376, max=237468, avg=23328.11, stdev=27975.05 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1762], 10.00th=[ 2442], 20.00th=[ 4424], | 30.00th=[ 6063], 40.00th=[ 7963], 50.00th=[ 11338], 60.00th=[ 19006], | 70.00th=[ 28967], 80.00th=[ 38536], 90.00th=[ 58983], 95.00th=[ 72877], | 99.00th=[145753], 99.50th=[183501], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 126, max= 640, per=27.16%, avg=316.18, stdev=113.30, samples=39 iops : min= 7, max= 40, avg=19.13, stdev= 7.25, samples=39 lat (usec) : 50=2.08%, 100=7.42%, 250=0.65%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=3.78%, 4=5.73%, 10=14.84%, 20=12.63%, 50=38.54% lat (msec) : 100=12.63%, 250=1.17% cpu : usr=0.12%, sys=8.02%, ctx=1502, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145937: Thu Aug 27 15:56:45 2026 read: IOPS=16, BW=265KiB/s (272kB/s)(5744KiB/21647msec) clat (usec): min=38, max=130837, avg=29860.80, stdev=23717.32 lat (usec): min=38, max=130838, avg=29861.94, stdev=23717.34 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 1893], | 30.00th=[ 17433], 40.00th=[ 22938], 50.00th=[ 27919], 60.00th=[ 31851], | 70.00th=[ 38011], 80.00th=[ 46400], 90.00th=[ 61080], 95.00th=[ 77071], | 99.00th=[ 99091], 99.50th=[113771], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 95, max= 448, per=23.98%, avg=265.19, stdev=84.95, samples=42 iops : min= 5, max= 28, avg=15.90, stdev= 5.37, samples=42 write: IOPS=18, BW=302KiB/s (310kB/s)(6544KiB/21647msec); 0 zone resets clat (usec): min=1361, max=197043, avg=26187.51, stdev=28143.93 lat (usec): min=1363, max=197045, avg=26189.46, stdev=28143.80 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 2212], 10.00th=[ 2966], 20.00th=[ 4555], | 30.00th=[ 6259], 40.00th=[ 9503], 50.00th=[ 15926], 60.00th=[ 24249], | 70.00th=[ 32637], 80.00th=[ 43779], 90.00th=[ 63701], 95.00th=[ 83362], | 99.00th=[129500], 99.50th=[143655], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 63, max= 570, per=25.66%, avg=298.64, stdev=102.08, samples=42 iops : min= 3, max= 35, avg=18.02, stdev= 6.49, samples=42 lat (usec) : 50=1.30%, 100=6.25%, 250=1.56% lat (msec) : 2=2.60%, 4=7.16%, 10=12.50%, 20=13.93%, 50=37.50% lat (msec) : 100=15.76%, 250=1.43% cpu : usr=0.08%, sys=7.72%, ctx=1549, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145938: Thu Aug 27 15:56:45 2026 read: IOPS=18, BW=291KiB/s (298kB/s)(6256KiB/21468msec) clat (usec): min=35, max=211993, avg=31169.51, stdev=23842.31 lat (usec): min=35, max=211994, avg=31171.34, stdev=23842.06 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 14222], | 30.00th=[ 19792], 40.00th=[ 23200], 50.00th=[ 28705], 60.00th=[ 34341], | 70.00th=[ 40633], 80.00th=[ 47973], 90.00th=[ 61080], 95.00th=[ 71828], | 99.00th=[102237], 99.50th=[137364], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 153, max= 480, per=26.52%, avg=293.36, stdev=84.17, samples=42 iops : min= 9, max= 30, avg=17.67, stdev= 5.36, samples=42 write: IOPS=17, BW=281KiB/s (288kB/s)(6032KiB/21468msec); 0 zone resets clat (usec): min=1389, max=234337, avg=24411.49, stdev=25716.02 lat (usec): min=1392, max=234339, avg=24413.56, stdev=25715.99 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 2040], 10.00th=[ 3228], 20.00th=[ 4686], | 30.00th=[ 6521], 40.00th=[ 9372], 50.00th=[ 14877], 60.00th=[ 22152], | 70.00th=[ 30016], 80.00th=[ 44303], 90.00th=[ 61080], 95.00th=[ 74974], | 99.00th=[ 99091], 99.50th=[108528], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 95, max= 576, per=24.07%, avg=280.12, stdev=109.82, samples=42 iops : min= 5, max= 36, avg=16.83, stdev= 6.90, samples=42 lat (usec) : 50=1.56%, 100=6.77%, 250=0.26%, 500=0.13%, 750=0.13% lat (msec) : 2=2.34%, 4=4.69%, 10=13.67%, 20=14.45%, 50=39.45% lat (msec) : 100=15.63%, 250=0.91% cpu : usr=0.11%, sys=8.28%, ctx=1581, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145939: Thu Aug 27 15:56:45 2026 read: IOPS=18, BW=301KiB/s (308kB/s)(6032KiB/20049msec) clat (usec): min=37, max=162195, avg=28738.92, stdev=23516.64 lat (usec): min=38, max=162195, avg=28740.05, stdev=23516.76 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 155], | 30.00th=[ 17171], 40.00th=[ 22414], 50.00th=[ 26608], 60.00th=[ 31851], | 70.00th=[ 38536], 80.00th=[ 46924], 90.00th=[ 56886], 95.00th=[ 71828], | 99.00th=[ 95945], 99.50th=[112722], 99.90th=[162530], 99.95th=[162530], | 99.99th=[162530] bw ( KiB/s): min= 63, max= 512, per=27.03%, avg=298.95, stdev=86.72, samples=39 iops : min= 3, max= 32, avg=18.05, stdev= 5.47, samples=39 write: IOPS=19, BW=312KiB/s (320kB/s)(6256KiB/20049msec); 0 zone resets clat (usec): min=1414, max=151417, avg=23101.93, stdev=24950.88 lat (usec): min=1415, max=151418, avg=23103.78, stdev=24950.83 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1795], 10.00th=[ 2573], 20.00th=[ 4047], | 30.00th=[ 6325], 40.00th=[ 8455], 50.00th=[ 11731], 60.00th=[ 18744], | 70.00th=[ 30278], 80.00th=[ 39584], 90.00th=[ 60556], 95.00th=[ 71828], | 99.00th=[112722], 99.50th=[133694], 99.90th=[152044], 99.95th=[152044], | 99.99th=[152044] bw ( KiB/s): min= 191, max= 640, per=26.87%, avg=312.79, stdev=86.69, samples=39 iops : min= 11, max= 40, avg=18.92, stdev= 5.55, samples=39 lat (usec) : 50=1.17%, 100=7.55%, 250=1.56%, 500=0.78%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.99%, 4=7.29%, 10=12.76%, 20=13.93%, 50=36.46% lat (msec) : 100=14.06%, 250=1.17% cpu : usr=0.07%, sys=8.33%, ctx=1492, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1106KiB/s (1133kB/s), 265KiB/s-301KiB/s (272kB/s-308kB/s), io=23.4MiB (24.5MB), run=20049-21647msec WRITE: bw=1164KiB/s (1192kB/s), 281KiB/s-316KiB/s (288kB/s-324kB/s), io=24.6MiB (25.8MB), run=20049-21647msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145941: Thu Aug 27 15:57:21 2026 read: IOPS=6, BW=106KiB/s (108kB/s)(5920KiB/55953msec) clat (msec): min=5, max=301, avg=29.60, stdev=31.35 lat (msec): min=5, max=301, avg=29.60, stdev=31.35 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 54], 95.00th=[ 88], | 99.00th=[ 182], 99.50th=[ 239], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 384, per=25.86%, avg=109.13, stdev=64.33, samples=105 iops : min= 1, max= 24, avg= 6.10, stdev= 4.11, samples=105 write: IOPS=7, BW=114KiB/s (117kB/s)(6368KiB/55953msec); 0 zone resets clat (msec): min=42, max=326, avg=112.91, stdev=44.77 lat (msec): min=42, max=326, avg=112.91, stdev=44.77 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 59], 10.00th=[ 67], 20.00th=[ 75], | 30.00th=[ 87], 40.00th=[ 93], 50.00th=[ 104], 60.00th=[ 114], | 70.00th=[ 130], 80.00th=[ 144], 90.00th=[ 176], 95.00th=[ 205], | 99.00th=[ 255], 99.50th=[ 300], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 22, max= 192, per=25.51%, avg=113.28, stdev=43.04, samples=110 iops : min= 1, max= 12, avg= 6.36, stdev= 2.74, samples=110 lat (msec) : 10=2.73%, 20=20.31%, 50=20.31%, 100=27.08%, 250=28.78% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.48%, ctx=1324, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145942: Thu Aug 27 15:57:21 2026 read: IOPS=6, BW=101KiB/s (104kB/s)(5744KiB/56721msec) clat (msec): min=6, max=215, avg=28.86, stdev=26.16 lat (msec): min=6, max=215, avg=28.86, stdev=26.16 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 17], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 62], 95.00th=[ 78], | 99.00th=[ 142], 99.50th=[ 199], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 22, max= 320, per=26.47%, avg=111.68, stdev=61.45, samples=101 iops : min= 1, max= 20, avg= 6.30, stdev= 3.89, samples=101 write: IOPS=7, BW=115KiB/s (118kB/s)(6544KiB/56721msec); 0 zone resets clat (msec): min=43, max=374, avg=113.14, stdev=48.91 lat (msec): min=43, max=374, avg=113.15, stdev=48.91 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 77], | 30.00th=[ 85], 40.00th=[ 93], 50.00th=[ 106], 60.00th=[ 115], | 70.00th=[ 128], 80.00th=[ 140], 90.00th=[ 176], 95.00th=[ 203], | 99.00th=[ 284], 99.50th=[ 334], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 224, per=25.90%, avg=114.99, stdev=41.97, samples=112 iops : min= 1, max= 14, avg= 6.48, stdev= 2.70, samples=112 lat (msec) : 10=3.78%, 20=18.75%, 50=19.14%, 100=29.30%, 250=27.86% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.47%, ctx=1335, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145943: Thu Aug 27 15:57:21 2026 read: IOPS=7, BW=116KiB/s (118kB/s)(6256KiB/54135msec) clat (msec): min=6, max=157, avg=26.41, stdev=22.92 lat (msec): min=6, max=157, avg=26.41, stdev=22.92 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 34], 90.00th=[ 51], 95.00th=[ 79], | 99.00th=[ 133], 99.50th=[ 150], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 31, max= 416, per=29.08%, avg=122.70, stdev=85.08, samples=101 iops : min= 1, max= 26, avg= 6.96, stdev= 5.42, samples=101 write: IOPS=6, BW=111KiB/s (114kB/s)(6032KiB/54135msec); 0 zone resets clat (msec): min=42, max=383, avg=116.02, stdev=48.88 lat (msec): min=42, max=383, avg=116.02, stdev=48.88 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 68], 20.00th=[ 81], | 30.00th=[ 88], 40.00th=[ 95], 50.00th=[ 106], 60.00th=[ 117], | 70.00th=[ 129], 80.00th=[ 144], 90.00th=[ 182], 95.00th=[ 207], | 99.00th=[ 292], 99.50th=[ 368], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 31, max= 192, per=24.95%, avg=110.78, stdev=39.90, samples=107 iops : min= 1, max= 12, avg= 6.21, stdev= 2.57, samples=107 lat (msec) : 10=3.65%, 20=24.48%, 50=17.97%, 100=25.26%, 250=27.99% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.55%, ctx=1349, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145944: Thu Aug 27 15:57:21 2026 read: IOPS=6, BW=109KiB/s (112kB/s)(6032KiB/55351msec) clat (msec): min=7, max=214, avg=27.62, stdev=24.52 lat (msec): min=7, max=214, avg=27.62, stdev=24.52 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 51], 95.00th=[ 75], | 99.00th=[ 138], 99.50th=[ 150], 99.90th=[ 215], 99.95th=[ 215], | 99.99th=[ 215] bw ( KiB/s): min= 22, max= 320, per=27.56%, avg=116.32, stdev=73.73, samples=101 iops : min= 1, max= 20, avg= 6.54, stdev= 4.67, samples=101 write: IOPS=7, BW=113KiB/s (116kB/s)(6256KiB/55351msec); 0 zone resets clat (msec): min=45, max=278, avg=114.76, stdev=45.77 lat (msec): min=45, max=278, avg=114.77, stdev=45.77 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 68], 20.00th=[ 78], | 30.00th=[ 86], 40.00th=[ 95], 50.00th=[ 104], 60.00th=[ 117], | 70.00th=[ 127], 80.00th=[ 146], 90.00th=[ 182], 95.00th=[ 215], | 99.00th=[ 253], 99.50th=[ 271], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 192, per=25.42%, avg=112.85, stdev=42.17, samples=109 iops : min= 1, max= 12, avg= 6.34, stdev= 2.72, samples=109 lat (msec) : 10=2.60%, 20=21.35%, 50=20.70%, 100=26.69%, 250=27.99% lat (msec) : 500=0.65% cpu : usr=0.04%, sys=1.47%, ctx=1397, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=422KiB/s (432kB/s), 101KiB/s-116KiB/s (104kB/s-118kB/s), io=23.4MiB (24.5MB), run=54135-56721msec WRITE: bw=444KiB/s (455kB/s), 111KiB/s-115KiB/s (114kB/s-118kB/s), io=24.6MiB (25.8MB), run=54135-56721msec mix direct rw 1048576 by fio with 4 jobs... mix buffer rw 1048576 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145964: Thu Aug 27 15:57:34 2026 read: IOPS=2, BW=2535KiB/s (2595kB/s)(7168KiB/2828msec) clat (usec): min=456, max=527868, avg=216516.73, stdev=159049.28 lat (usec): min=458, max=527869, avg=216518.08, stdev=159048.99 clat percentiles (usec): | 1.00th=[ 457], 5.00th=[ 457], 10.00th=[ 457], 20.00th=[158335], | 30.00th=[164627], 40.00th=[164627], 50.00th=[202376], 60.00th=[202376], | 70.00th=[202376], 80.00th=[258999], 90.00th=[526386], 95.00th=[526386], | 99.00th=[526386], 99.50th=[526386], 99.90th=[526386], 99.95th=[526386], | 99.99th=[526386] bw ( KiB/s): min= 1943, max= 3663, per=58.83%, avg=2798.00, stdev=931.72, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1810KiB/s (1854kB/s)(5120KiB/2828msec); 0 zone resets clat (msec): min=113, max=429, avg=242.47, stdev=115.37 lat (msec): min=113, max=429, avg=242.54, stdev=115.35 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 215], 60.00th=[ 215], | 70.00th=[ 245], 80.00th=[ 245], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1831, max= 3886, per=36.62%, avg=2438.00, stdev=969.55, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=66.67%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=19.70%, ctx=284, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145965: Thu Aug 27 15:57:34 2026 read: IOPS=0, BW=505KiB/s (518kB/s)(2048KiB/4052msec) clat (msec): min=144, max=373, avg=258.82, stdev=161.86 lat (msec): min=144, max=373, avg=258.82, stdev=161.86 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 372], 95.00th=[ 372], | 99.00th=[ 372], 99.50th=[ 372], 99.90th=[ 372], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 1831, max= 2031, per=40.60%, avg=1931.00, stdev=141.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2527KiB/s (2588kB/s)(10.0MiB/4052msec); 0 zone resets clat (msec): min=135, max=957, avg=326.20, stdev=241.52 lat (msec): min=135, max=958, avg=326.27, stdev=241.53 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 197], | 30.00th=[ 199], 40.00th=[ 215], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 284], 80.00th=[ 359], 90.00th=[ 468], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1831, max= 6095, per=60.07%, avg=3999.25, stdev=1741.78, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 1.63, samples=4 lat (msec) : 250=58.33%, 500=33.33%, 1000=8.33% cpu : usr=0.00%, sys=15.43%, ctx=171, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145966: Thu Aug 27 15:57:34 2026 read: IOPS=1, BW=1998KiB/s (2046kB/s)(6144KiB/3075msec) clat (usec): min=467, max=295695, avg=137188.44, stdev=149693.31 lat (usec): min=469, max=295696, avg=137189.52, stdev=149693.40 clat percentiles (usec): | 1.00th=[ 469], 5.00th=[ 469], 10.00th=[ 469], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 2180], 50.00th=[ 2180], 60.00th=[254804], | 70.00th=[270533], 80.00th=[270533], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 1943, max= 5976, per=83.25%, avg=3959.50, stdev=2851.76, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1998KiB/s (2046kB/s)(6144KiB/3075msec); 0 zone resets clat (msec): min=103, max=786, avg=329.96, stdev=274.69 lat (msec): min=103, max=786, avg=330.02, stdev=274.69 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 118], | 30.00th=[ 118], 40.00th=[ 184], 50.00th=[ 184], 60.00th=[ 247], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1831, max= 1992, per=28.89%, avg=1923.50, stdev=67.45, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 4=8.33%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=16.10%, ctx=155, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145967: Thu Aug 27 15:57:34 2026 read: IOPS=1, BW=1189KiB/s (1218kB/s)(5120KiB/4306msec) clat (usec): min=477, max=367688, avg=215960.48, stdev=134696.08 lat (usec): min=479, max=367689, avg=215961.85, stdev=134695.89 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 478], | 30.00th=[210764], 40.00th=[210764], 50.00th=[229639], 60.00th=[229639], | 70.00th=[270533], 80.00th=[270533], 90.00th=[367002], 95.00th=[367002], | 99.00th=[367002], 99.50th=[367002], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 4063, max= 4063, per=85.43%, avg=4063.00, stdev= 0.00, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1665KiB/s (1705kB/s)(7168KiB/4306msec); 0 zone resets clat (msec): min=130, max=885, avg=438.03, stdev=252.69 lat (msec): min=130, max=885, avg=438.41, stdev=252.49 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 296], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 405], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 651], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 1831, max= 4087, per=34.86%, avg=2321.17, stdev=868.49, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (usec) : 500=8.33% lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=10.66%, ctx=210, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4756KiB/s (4870kB/s), 505KiB/s-2535KiB/s (518kB/s-2595kB/s), io=20.0MiB (20.0MB), run=2828-4306msec WRITE: bw=6659KiB/s (6818kB/s), 1665KiB/s-2527KiB/s (1705kB/s-2588kB/s), io=28.0MiB (29.4MB), run=2828-4306msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145959: Thu Aug 27 15:57:34 2026 read: IOPS=1, BW=2003KiB/s (2051kB/s)(7168KiB/3578msec) clat (msec): min=60, max=690, avg=214.22, stdev=226.93 lat (msec): min=60, max=690, avg=214.22, stdev=226.93 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 62], 10.00th=[ 62], 20.00th=[ 71], | 30.00th=[ 84], 40.00th=[ 84], 50.00th=[ 125], 60.00th=[ 157], | 70.00th=[ 157], 80.00th=[ 313], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1996, max= 4458, per=54.84%, avg=2634.00, stdev=1216.19, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1431KiB/s (1465kB/s)(5120KiB/3578msec); 0 zone resets clat (msec): min=315, max=505, avg=409.91, stdev=67.35 lat (msec): min=315, max=505, avg=410.02, stdev=67.37 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 1943, max= 2039, per=29.45%, avg=1980.25, stdev=46.46, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=25.00%, 250=16.67%, 500=41.67%, 750=16.67% cpu : usr=0.03%, sys=6.04%, ctx=65, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145960: Thu Aug 27 15:57:34 2026 read: IOPS=0, BW=510KiB/s (522kB/s)(2048KiB/4017msec) clat (msec): min=142, max=246, avg=194.44, stdev=73.72 lat (msec): min=142, max=246, avg=194.45, stdev=73.71 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 247], | 70.00th=[ 247], 80.00th=[ 247], 90.00th=[ 247], 95.00th=[ 247], | 99.00th=[ 247], 99.50th=[ 247], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 1595, max= 1943, per=36.83%, avg=1769.00, stdev=246.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2549KiB/s (2610kB/s)(10.0MiB/4017msec); 0 zone resets clat (msec): min=192, max=708, avg=357.18, stdev=152.26 lat (msec): min=192, max=708, avg=357.37, stdev=152.25 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 220], | 30.00th=[ 228], 40.00th=[ 309], 50.00th=[ 321], 60.00th=[ 347], | 70.00th=[ 351], 80.00th=[ 409], 90.00th=[ 485], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1943, max= 4071, per=39.74%, avg=2671.83, stdev=1054.40, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=41.67%, 500=50.00%, 750=8.33% cpu : usr=0.00%, sys=6.10%, ctx=99, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145961: Thu Aug 27 15:57:34 2026 read: IOPS=1, BW=1625KiB/s (1664kB/s)(6144KiB/3781msec) clat (msec): min=73, max=544, avg=201.66, stdev=175.92 lat (msec): min=73, max=544, avg=201.66, stdev=175.92 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 97], | 30.00th=[ 97], 40.00th=[ 118], 50.00th=[ 118], 60.00th=[ 153], | 70.00th=[ 226], 80.00th=[ 226], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2035, max= 4079, per=69.40%, avg=3333.33, stdev=1128.52, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1625KiB/s (1664kB/s)(6144KiB/3781msec); 0 zone resets clat (msec): min=230, max=784, avg=410.93, stdev=210.65 lat (msec): min=230, max=785, avg=411.21, stdev=210.93 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 251], | 30.00th=[ 251], 40.00th=[ 279], 50.00th=[ 279], 60.00th=[ 430], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1544, max= 4071, per=34.49%, avg=2319.40, stdev=999.00, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=4.60%, ctx=95, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145962: Thu Aug 27 15:57:34 2026 read: IOPS=1, BW=1201KiB/s (1230kB/s)(5120KiB/4264msec) clat (msec): min=114, max=393, avg=249.86, stdev=123.91 lat (msec): min=114, max=393, avg=249.86, stdev=123.91 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 115], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 197], 60.00th=[ 197], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 3886, max= 4079, per=82.92%, avg=3982.50, stdev=136.47, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1681KiB/s (1721kB/s)(7168KiB/4264msec); 0 zone resets clat (msec): min=200, max=658, avg=401.90, stdev=176.42 lat (msec): min=201, max=658, avg=401.99, stdev=176.41 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 230], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 359], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 567], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1575, max= 4079, per=33.89%, avg=2278.50, stdev=899.31, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=41.67%, 500=33.33%, 750=25.00% cpu : usr=0.02%, sys=4.97%, ctx=89, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4803KiB/s (4918kB/s), 510KiB/s-2003KiB/s (522kB/s-2051kB/s), io=20.0MiB (20.0MB), run=3578-4264msec WRITE: bw=6724KiB/s (6886kB/s), 1431KiB/s-2549KiB/s (1465kB/s-2610kB/s), io=28.0MiB (29.4MB), run=3578-4264msec mix direct rw 4194304 by fio with 4 jobs... mix buffer rw 4194304 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=145974: Thu Aug 27 15:57:48 2026 read: IOPS=0, BW=3644KiB/s (3732kB/s)(12.0MiB/3372msec) clat (msec): min=498, max=1919, avg=1102.41, stdev=733.91 lat (msec): min=498, max=1919, avg=1102.41, stdev=733.91 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 70.00th=[ 1921], 80.00th=[ 1921], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 8062, max= 8192, per=100.00%, avg=8127.00, stdev=91.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.18%, ctx=47, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145975: Thu Aug 27 15:57:48 2026 read: IOPS=0, BW=1338KiB/s (1370kB/s)(4096KiB/3061msec) clat (nsec): min=1560.3M, max=1560.3M, avg=1560294193.00, stdev= 0.00 lat (nsec): min=1560.4M, max=1560.4M, avg=1560407671.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1569], 5.00th=[ 1569], 10.00th=[ 1569], 20.00th=[ 1569], | 30.00th=[ 1569], 40.00th=[ 1569], 50.00th=[ 1569], 60.00th=[ 1569], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2676KiB/s (2740kB/s)(8192KiB/3061msec); 0 zone resets clat (msec): min=454, max=999, avg=727.29, stdev=385.51 lat (msec): min=455, max=1000, avg=727.64, stdev=385.40 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 1003], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8192, max= 8192, per=99.36%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.29%, ctx=80, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145976: Thu Aug 27 15:57:48 2026 write: IOPS=0, BW=3092KiB/s (3166kB/s)(12.0MiB/3974msec); 0 zone resets clat (msec): min=330, max=2507, avg=1269.31, stdev=1118.99 lat (msec): min=332, max=2527, avg=1276.87, stdev=1129.10 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 2500], 80.00th=[ 2500], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 8062, max= 8159, per=98.37%, avg=8110.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.18%, ctx=66, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145977: Thu Aug 27 15:57:48 2026 write: IOPS=0, BW=3515KiB/s (3599kB/s)(12.0MiB/3496msec); 0 zone resets clat (msec): min=261, max=2755, avg=1129.75, stdev=1409.22 lat (msec): min=261, max=2755, avg=1130.14, stdev=1409.04 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 6282, max= 8175, per=87.67%, avg=7228.50, stdev=1338.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.03%, sys=3.78%, ctx=46, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4859KiB/s (4975kB/s), 1338KiB/s-3644KiB/s (1370kB/s-3732kB/s), io=16.0MiB (16.8MB), run=3061-3372msec WRITE: bw=8246KiB/s (8443kB/s), 2676KiB/s-3515KiB/s (2740kB/s-3599kB/s), io=32.0MiB (33.6MB), run=3061-3974msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145978: Thu Aug 27 15:57:48 2026 read: IOPS=0, BW=3878KiB/s (3971kB/s)(12.0MiB/3169msec) clat (msec): min=588, max=1703, avg=1047.59, stdev=582.73 lat (msec): min=588, max=1703, avg=1047.59, stdev=582.74 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=14.74%, ctx=461, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145979: Thu Aug 27 15:57:48 2026 read: IOPS=0, BW=1078KiB/s (1104kB/s)(4096KiB/3799msec) clat (nsec): min=1506.0M, max=1506.0M, avg=1506030002.00, stdev= 0.00 lat (nsec): min=1506.0M, max=1506.0M, avg=1506032444.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1502], 5.00th=[ 1502], 10.00th=[ 1502], 20.00th=[ 1502], | 30.00th=[ 1502], 40.00th=[ 1502], 50.00th=[ 1502], 60.00th=[ 1502], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2156KiB/s (2208kB/s)(8192KiB/3799msec); 0 zone resets clat (msec): min=812, max=1274, avg=1043.92, stdev=326.79 lat (msec): min=813, max=1275, avg=1044.22, stdev=326.77 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 1267], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=5.27%, ctx=218, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145980: Thu Aug 27 15:57:48 2026 write: IOPS=0, BW=2922KiB/s (2992kB/s)(12.0MiB/4206msec); 0 zone resets clat (msec): min=179, max=2908, avg=1367.01, stdev=1398.46 lat (msec): min=179, max=2913, avg=1368.86, stdev=1401.03 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 2903], 80.00th=[ 2903], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.81%, ctx=30, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145981: Thu Aug 27 15:57:48 2026 write: IOPS=0, BW=3420KiB/s (3502kB/s)(12.0MiB/3593msec); 0 zone resets clat (msec): min=171, max=2791, avg=1131.46, stdev=1443.72 lat (msec): min=171, max=2792, avg=1131.81, stdev=1443.74 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 2802], 80.00th=[ 2802], 90.00th=[ 2802], 95.00th=[ 2802], | 99.00th=[ 2802], 99.50th=[ 2802], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 5893, max= 8047, per=89.47%, avg=6970.00, stdev=1523.11, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=3.59%, ctx=40, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4313KiB/s (4416kB/s), 1078KiB/s-3878KiB/s (1104kB/s-3971kB/s), io=16.0MiB (16.8MB), run=3169-3799msec WRITE: bw=7791KiB/s (7978kB/s), 2156KiB/s-3420KiB/s (2208kB/s-3502kB/s), io=32.0MiB (33.6MB), run=3593-4206msec