== sanity test 398b: DIO and buffer IO race ============== 22:53:48 (1788922428) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.47617 s, 7.8 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=149605: Tue Sep 8 22:56:22 2026 read: IOPS=11, BW=45.8KiB/s (46.9kB/s)(5992KiB/130741msec) clat (usec): min=30, max=759701, avg=48668.40, stdev=39227.02 lat (usec): min=31, max=759703, avg=48671.75, stdev=39226.11 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 10814], 10.00th=[ 16581], 20.00th=[ 22938], | 30.00th=[ 28443], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 49021], | 70.00th=[ 56886], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[109577], | 99.00th=[179307], 99.50th=[221250], 99.90th=[346031], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 7, max= 104, per=25.22%, avg=45.40, stdev=19.84, samples=257 iops : min= 1, max= 26, avg=10.70, stdev= 5.00, samples=257 write: IOPS=12, BW=48.2KiB/s (49.3kB/s)(6296KiB/130741msec); 0 zone resets clat (usec): min=910, max=287678, avg=36446.70, stdev=40935.24 lat (usec): min=912, max=287680, avg=36452.61, stdev=40933.39 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1205], 10.00th=[ 1516], 20.00th=[ 3032], | 30.00th=[ 6587], 40.00th=[ 14353], 50.00th=[ 23725], 60.00th=[ 33162], | 70.00th=[ 46924], 80.00th=[ 61080], 90.00th=[ 89654], 95.00th=[116917], | 99.00th=[179307], 99.50th=[227541], 99.90th=[283116], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 7, max= 152, per=25.81%, avg=48.52, stdev=22.88, samples=253 iops : min= 1, max= 38, avg=11.49, stdev= 5.78, samples=253 lat (usec) : 50=0.23%, 100=1.66%, 250=0.10%, 750=0.03%, 1000=0.23% lat (msec) : 2=7.06%, 4=4.75%, 10=6.35%, 20=10.51%, 50=35.97% lat (msec) : 100=25.78%, 250=7.06%, 500=0.23%, 1000=0.03% cpu : usr=0.07%, sys=5.23%, ctx=6514, 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=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=149606: Tue Sep 8 22:56:22 2026 read: IOPS=11, BW=45.3KiB/s (46.4kB/s)(5940KiB/131200msec) clat (usec): min=36, max=341798, avg=47998.46, stdev=34537.96 lat (usec): min=37, max=341799, avg=48001.80, stdev=34537.13 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 11994], 10.00th=[ 16712], 20.00th=[ 23200], | 30.00th=[ 28443], 40.00th=[ 33817], 50.00th=[ 40633], 60.00th=[ 47973], | 70.00th=[ 56361], 80.00th=[ 68682], 90.00th=[ 87557], 95.00th=[104334], | 99.00th=[179307], 99.50th=[217056], 99.90th=[329253], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 5, max= 111, per=24.97%, avg=44.95, stdev=18.99, samples=257 iops : min= 1, max= 27, avg=10.59, stdev= 4.78, samples=257 write: IOPS=12, BW=48.4KiB/s (49.5kB/s)(6348KiB/131200msec); 0 zone resets clat (usec): min=963, max=727140, avg=37437.73, stdev=43843.81 lat (usec): min=964, max=727140, avg=37443.39, stdev=43841.58 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1680], 20.00th=[ 3884], | 30.00th=[ 7504], 40.00th=[ 16712], 50.00th=[ 26084], 60.00th=[ 34866], | 70.00th=[ 45876], 80.00th=[ 62653], 90.00th=[ 91751], 95.00th=[121111], | 99.00th=[181404], 99.50th=[217056], 99.90th=[325059], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 7, max= 149, per=25.50%, avg=47.94, stdev=22.96, samples=257 iops : min= 1, max= 37, avg=11.34, stdev= 5.78, samples=257 lat (usec) : 50=0.16%, 100=1.17%, 250=0.29%, 1000=0.10% lat (msec) : 2=6.32%, 4=4.20%, 10=7.13%, 20=10.38%, 50=38.48% lat (msec) : 100=24.64%, 250=6.80%, 500=0.29%, 750=0.03% cpu : usr=0.07%, sys=5.10%, ctx=6565, 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=149607: Tue Sep 8 22:56:22 2026 read: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6028KiB/133250msec) clat (usec): min=34, max=750247, avg=49250.45, stdev=41663.55 lat (usec): min=35, max=750248, avg=49252.05, stdev=41663.38 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 9503], 10.00th=[ 16450], 20.00th=[ 22676], | 30.00th=[ 28181], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 56361], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[111674], | 99.00th=[212861], 99.50th=[258999], 99.90th=[392168], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 5, max= 119, per=24.94%, avg=44.90, stdev=19.18, samples=261 iops : min= 1, max= 29, avg=10.57, stdev= 4.82, samples=261 write: IOPS=11, BW=46.0KiB/s (48.1kB/s)(6260KiB/133250msec); 0 zone resets clat (usec): min=979, max=279483, avg=37402.80, stdev=39626.78 lat (usec): min=981, max=279484, avg=37410.24, stdev=39630.67 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1254], 10.00th=[ 1713], 20.00th=[ 3785], | 30.00th=[ 8160], 40.00th=[ 17433], 50.00th=[ 26870], 60.00th=[ 35390], | 70.00th=[ 46924], 80.00th=[ 62653], 90.00th=[ 92799], 95.00th=[119014], | 99.00th=[173016], 99.50th=[208667], 99.90th=[240124], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 7, max= 119, per=24.77%, avg=46.57, stdev=22.54, samples=261 iops : min= 1, max= 29, avg=11.01, stdev= 5.69, samples=261 lat (usec) : 50=0.23%, 100=1.50%, 250=0.29%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=5.99%, 4=4.69%, 10=6.05%, 20=10.51%, 50=38.83% lat (msec) : 100=23.96%, 250=7.45%, 500=0.29%, 1000=0.03% cpu : usr=0.06%, sys=4.92%, ctx=6485, 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=149608: Tue Sep 8 22:56:22 2026 read: IOPS=11, BW=46.4KiB/s (47.6kB/s)(6052KiB/130308msec) clat (usec): min=35, max=882185, avg=47756.97, stdev=39748.24 lat (usec): min=35, max=882186, avg=47758.66, stdev=39748.17 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 7570], 10.00th=[ 16188], 20.00th=[ 22938], | 30.00th=[ 28181], 40.00th=[ 33817], 50.00th=[ 40109], 60.00th=[ 46924], | 70.00th=[ 55837], 80.00th=[ 67634], 90.00th=[ 88605], 95.00th=[104334], | 99.00th=[181404], 99.50th=[214959], 99.90th=[267387], 99.95th=[884999], | 99.99th=[884999] bw ( KiB/s): min= 7, max= 102, per=25.78%, avg=46.41, stdev=18.97, samples=254 iops : min= 1, max= 25, avg=10.95, stdev= 4.77, samples=254 write: IOPS=11, BW=47.9KiB/s (49.0kB/s)(6236KiB/130308msec); 0 zone resets clat (usec): min=828, max=284622, avg=36938.70, stdev=39069.38 lat (usec): min=829, max=284624, avg=36940.37, stdev=39069.19 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1221], 10.00th=[ 1532], 20.00th=[ 3851], | 30.00th=[ 7767], 40.00th=[ 15008], 50.00th=[ 25297], 60.00th=[ 35914], | 70.00th=[ 49021], 80.00th=[ 66323], 90.00th=[ 87557], 95.00th=[108528], | 99.00th=[175113], 99.50th=[202376], 99.90th=[240124], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 135, per=25.41%, avg=47.78, stdev=20.76, samples=254 iops : min= 1, max= 33, avg=11.30, stdev= 5.23, samples=254 lat (usec) : 50=0.23%, 100=1.99%, 250=0.10%, 1000=0.26% lat (msec) : 2=6.18%, 4=4.04%, 10=6.90%, 20=10.58%, 50=37.34% lat (msec) : 100=26.37%, 250=5.86%, 500=0.13%, 1000=0.03% cpu : usr=0.08%, sys=4.98%, ctx=6491, 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=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=180KiB/s (185kB/s), 45.2KiB/s-46.4KiB/s (46.3kB/s-47.6kB/s), io=23.4MiB (24.6MB), run=130308-133250msec WRITE: bw=189KiB/s (193kB/s), 46.0KiB/s-48.4KiB/s (48.1kB/s-49.5kB/s), io=24.6MiB (25.7MB), run=130308-133250msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149609: Tue Sep 8 22:57:11 2026 read: IOPS=8, BW=33.1KiB/s (33.9kB/s)(5992KiB/181013msec) clat (msec): min=4, max=754, avg=46.43, stdev=46.03 lat (msec): min=4, max=754, avg=46.43, stdev=46.03 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 100], 95.00th=[ 132], | 99.00th=[ 213], 99.50th=[ 232], 99.90th=[ 418], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 132, per=25.74%, avg=33.72, stdev=23.55, samples=345 iops : min= 1, max= 33, avg= 7.76, stdev= 5.93, samples=345 write: IOPS=8, BW=34.8KiB/s (35.6kB/s)(6296KiB/181013msec); 0 zone resets clat (msec): min=9, max=575, avg=70.61, stdev=55.18 lat (msec): min=9, max=575, avg=70.62, stdev=55.18 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 65], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 133], 95.00th=[ 178], | 99.00th=[ 288], 99.50th=[ 334], 99.90th=[ 477], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 119, per=25.32%, avg=34.69, stdev=21.81, samples=352 iops : min= 1, max= 29, avg= 8.01, stdev= 5.48, samples=352 lat (msec) : 10=2.54%, 20=13.18%, 50=42.22%, 100=27.41%, 250=13.54% lat (msec) : 500=1.04%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=1.64%, ctx=4749, 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=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=149610: Tue Sep 8 22:57:11 2026 read: IOPS=8, BW=32.7KiB/s (33.5kB/s)(5940KiB/181709msec) clat (msec): min=4, max=904, avg=45.92, stdev=47.38 lat (msec): min=4, max=904, avg=45.92, stdev=47.38 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 66], 90.00th=[ 101], 95.00th=[ 134], | 99.00th=[ 203], 99.50th=[ 226], 99.90th=[ 418], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 151, per=26.06%, avg=34.14, stdev=23.75, samples=338 iops : min= 1, max= 37, avg= 7.87, stdev= 5.96, samples=338 write: IOPS=8, BW=34.9KiB/s (35.8kB/s)(6348KiB/181709msec); 0 zone resets clat (msec): min=11, max=573, avg=71.32, stdev=52.71 lat (msec): min=11, max=573, avg=71.32, stdev=52.71 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 27], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 81], 80.00th=[ 102], 90.00th=[ 140], 95.00th=[ 174], | 99.00th=[ 268], 99.50th=[ 317], 99.90th=[ 409], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 126, per=25.30%, avg=34.66, stdev=21.01, samples=356 iops : min= 1, max= 31, avg= 8.00, stdev= 5.28, samples=356 lat (msec) : 10=2.21%, 20=12.79%, 50=41.73%, 100=27.96%, 250=14.39% lat (msec) : 500=0.85%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=1.61%, ctx=4667, 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=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=149611: Tue Sep 8 22:57:11 2026 read: IOPS=8, BW=33.0KiB/s (33.8kB/s)(6028KiB/182539msec) clat (msec): min=5, max=415, avg=47.96, stdev=44.21 lat (msec): min=5, max=415, avg=47.96, stdev=44.21 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 42], | 70.00th=[ 52], 80.00th=[ 71], 90.00th=[ 104], 95.00th=[ 134], | 99.00th=[ 222], 99.50th=[ 266], 99.90th=[ 326], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 7, max= 144, per=25.31%, avg=33.16, stdev=22.43, samples=352 iops : min= 1, max= 36, avg= 7.63, stdev= 5.65, samples=352 write: IOPS=8, BW=34.3KiB/s (35.1kB/s)(6260KiB/182539msec); 0 zone resets clat (msec): min=10, max=959, avg=70.24, stdev=53.94 lat (msec): min=10, max=959, avg=70.24, stdev=53.95 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 33], | 30.00th=[ 40], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 80], 80.00th=[ 99], 90.00th=[ 131], 95.00th=[ 171], | 99.00th=[ 255], 99.50th=[ 292], 99.90th=[ 443], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 127, per=24.94%, avg=34.17, stdev=21.04, samples=355 iops : min= 1, max= 31, avg= 7.88, stdev= 5.28, samples=355 lat (msec) : 10=1.79%, 20=13.02%, 50=41.50%, 100=28.68%, 250=14.19% lat (msec) : 500=0.78%, 1000=0.03% cpu : usr=0.06%, sys=1.68%, ctx=4749, majf=0, minf=13 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=149612: Tue Sep 8 22:57:11 2026 read: IOPS=8, BW=33.3KiB/s (34.1kB/s)(6052KiB/181578msec) clat (msec): min=4, max=413, avg=46.86, stdev=42.21 lat (msec): min=4, max=413, avg=46.86, stdev=42.21 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 40], | 70.00th=[ 51], 80.00th=[ 69], 90.00th=[ 105], 95.00th=[ 136], | 99.00th=[ 203], 99.50th=[ 241], 99.90th=[ 326], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 135, per=26.16%, avg=34.27, stdev=23.28, samples=342 iops : min= 1, max= 33, avg= 7.91, stdev= 5.85, samples=342 write: IOPS=8, BW=34.3KiB/s (35.2kB/s)(6236KiB/181578msec); 0 zone resets clat (msec): min=9, max=956, avg=70.78, stdev=56.33 lat (msec): min=9, max=956, avg=70.79, stdev=56.35 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 21], 10.00th=[ 26], 20.00th=[ 32], | 30.00th=[ 39], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 82], 80.00th=[ 101], 90.00th=[ 136], 95.00th=[ 165], | 99.00th=[ 275], 99.50th=[ 321], 99.90th=[ 468], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 112, per=25.10%, avg=34.39, stdev=20.91, samples=351 iops : min= 1, max= 28, avg= 7.94, stdev= 5.26, samples=351 lat (msec) : 10=2.21%, 20=12.57%, 50=41.93%, 100=27.83%, 250=14.65% lat (msec) : 500=0.78%, 1000=0.03% cpu : usr=0.06%, sys=1.71%, ctx=4787, 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=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=132KiB/s (135kB/s), 32.7KiB/s-33.3KiB/s (33.5kB/s-34.1kB/s), io=23.4MiB (24.6MB), run=181013-182539msec WRITE: bw=138KiB/s (141kB/s), 34.3KiB/s-34.9KiB/s (35.1kB/s-35.8kB/s), io=24.6MiB (25.7MB), run=181013-182539msec 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=149663: Tue Sep 8 22:57:59 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(5920KiB/34104msec) clat (usec): min=36, max=184918, avg=47234.82, stdev=32168.66 lat (usec): min=36, max=184920, avg=47243.50, stdev=32162.50 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 95], 20.00th=[ 22676], | 30.00th=[ 30278], 40.00th=[ 35914], 50.00th=[ 43254], 60.00th=[ 51119], | 70.00th=[ 59507], 80.00th=[ 70779], 90.00th=[ 89654], 95.00th=[109577], | 99.00th=[143655], 99.50th=[156238], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 31, max= 351, per=24.66%, avg=170.62, stdev=70.12, samples=66 iops : min= 1, max= 21, avg= 9.88, stdev= 4.42, samples=66 write: IOPS=11, BW=187KiB/s (191kB/s)(6368KiB/34104msec); 0 zone resets clat (usec): min=1424, max=209335, avg=41663.17, stdev=39864.04 lat (usec): min=1426, max=209336, avg=41667.73, stdev=39862.48 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2474], 10.00th=[ 3425], 20.00th=[ 7308], | 30.00th=[ 11994], 40.00th=[ 19792], 50.00th=[ 28705], 60.00th=[ 41157], | 70.00th=[ 56361], 80.00th=[ 72877], 90.00th=[ 94897], 95.00th=[119014], | 99.00th=[179307], 99.50th=[204473], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 383, per=25.54%, avg=185.94, stdev=78.78, samples=66 iops : min= 1, max= 23, avg=10.83, stdev= 5.02, samples=66 lat (usec) : 50=0.39%, 100=4.56%, 250=0.52%, 500=0.26%, 1000=0.13% lat (msec) : 2=1.30%, 4=4.95%, 10=7.81%, 20=9.24%, 50=33.20% lat (msec) : 100=29.95%, 250=7.68% cpu : usr=0.07%, sys=5.42%, ctx=1679, 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=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=149664: Tue Sep 8 22:57:59 2026 read: IOPS=10, BW=166KiB/s (170kB/s)(5744KiB/34601msec) clat (usec): min=47, max=288344, avg=52165.02, stdev=37213.37 lat (usec): min=48, max=288344, avg=52171.54, stdev=37211.36 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 73], 10.00th=[ 17171], 20.00th=[ 24511], | 30.00th=[ 31851], 40.00th=[ 37487], 50.00th=[ 45876], 60.00th=[ 53740], | 70.00th=[ 62129], 80.00th=[ 76022], 90.00th=[ 94897], 95.00th=[113771], | 99.00th=[202376], 99.50th=[240124], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 30, max= 407, per=23.52%, avg=162.73, stdev=71.02, samples=67 iops : min= 1, max= 25, avg= 9.37, stdev= 4.53, samples=67 write: IOPS=11, BW=189KiB/s (194kB/s)(6544KiB/34601msec); 0 zone resets clat (usec): min=1481, max=252132, avg=38693.66, stdev=39799.86 lat (usec): min=1483, max=252134, avg=38695.95, stdev=39799.75 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2114], 10.00th=[ 3130], 20.00th=[ 6587], | 30.00th=[ 11338], 40.00th=[ 17171], 50.00th=[ 26870], 60.00th=[ 38011], | 70.00th=[ 49021], 80.00th=[ 66847], 90.00th=[ 84411], 95.00th=[111674], | 99.00th=[183501], 99.50th=[200279], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 319, per=25.05%, avg=182.36, stdev=76.04, samples=67 iops : min= 1, max= 19, avg=10.63, stdev= 4.79, samples=67 lat (usec) : 50=0.26%, 100=2.86%, 250=0.26%, 750=0.13%, 1000=0.13% lat (msec) : 2=2.47%, 4=4.56%, 10=7.94%, 20=10.16%, 50=34.77% lat (msec) : 100=28.78%, 250=7.42%, 500=0.26% cpu : usr=0.07%, sys=5.76%, ctx=1764, 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=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=149665: Tue Sep 8 22:57:59 2026 read: IOPS=11, BW=183KiB/s (187kB/s)(6256KiB/34191msec) clat (usec): min=49, max=252756, avg=50220.45, stdev=36458.51 lat (usec): min=49, max=252757, avg=50223.19, stdev=36459.83 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 65], 10.00th=[ 11207], 20.00th=[ 24511], | 30.00th=[ 31065], 40.00th=[ 36439], 50.00th=[ 43254], 60.00th=[ 50070], | 70.00th=[ 61604], 80.00th=[ 71828], 90.00th=[ 93848], 95.00th=[116917], | 99.00th=[181404], 99.50th=[238027], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 415, per=26.44%, avg=182.99, stdev=72.26, samples=67 iops : min= 1, max= 25, avg=10.64, stdev= 4.55, samples=67 write: IOPS=11, BW=176KiB/s (181kB/s)(6032KiB/34191msec); 0 zone resets clat (usec): min=1356, max=183532, avg=38469.54, stdev=38629.44 lat (usec): min=1358, max=183534, avg=38477.53, stdev=38626.80 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2343], 10.00th=[ 3589], 20.00th=[ 6194], | 30.00th=[ 11076], 40.00th=[ 18744], 50.00th=[ 25560], 60.00th=[ 33424], | 70.00th=[ 46400], 80.00th=[ 67634], 90.00th=[ 93848], 95.00th=[127402], | 99.00th=[166724], 99.50th=[166724], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 30, max= 540, per=24.00%, avg=174.72, stdev=88.94, samples=67 iops : min= 1, max= 33, avg=10.13, stdev= 5.64, samples=67 lat (usec) : 50=0.13%, 100=4.30%, 1000=0.26% lat (msec) : 2=2.08%, 4=3.52%, 10=8.59%, 20=10.29%, 50=36.33% lat (msec) : 100=26.30%, 250=8.07%, 500=0.13% cpu : usr=0.08%, sys=5.36%, ctx=1710, 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=149666: Tue Sep 8 22:57:59 2026 read: IOPS=11, BW=178KiB/s (182kB/s)(6032KiB/33964msec) clat (usec): min=50, max=236813, avg=49290.37, stdev=38053.29 lat (usec): min=51, max=236814, avg=49292.94, stdev=38052.94 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 63], 10.00th=[ 78], 20.00th=[ 22938], | 30.00th=[ 28967], 40.00th=[ 35914], 50.00th=[ 41681], 60.00th=[ 50070], | 70.00th=[ 58983], 80.00th=[ 73925], 90.00th=[ 98042], 95.00th=[115868], | 99.00th=[179307], 99.50th=[196084], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 30, max= 409, per=25.36%, avg=175.48, stdev=84.71, samples=66 iops : min= 1, max= 25, avg=10.18, stdev= 5.35, samples=66 write: IOPS=11, BW=184KiB/s (189kB/s)(6256KiB/33964msec); 0 zone resets clat (usec): min=1469, max=260158, avg=39167.89, stdev=43418.26 lat (usec): min=1470, max=260162, avg=39171.29, stdev=43418.31 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2040], 10.00th=[ 2999], 20.00th=[ 5932], | 30.00th=[ 9765], 40.00th=[ 15533], 50.00th=[ 25297], 60.00th=[ 34866], | 70.00th=[ 46924], 80.00th=[ 63177], 90.00th=[ 92799], 95.00th=[132645], | 99.00th=[183501], 99.50th=[244319], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 31, max= 540, per=25.04%, avg=182.26, stdev=90.94, samples=66 iops : min= 1, max= 33, avg=10.59, stdev= 5.71, samples=66 lat (usec) : 100=5.73%, 250=0.26%, 500=0.26%, 750=0.13% lat (msec) : 2=2.47%, 4=4.04%, 10=8.98%, 20=9.77%, 50=34.77% lat (msec) : 100=24.35%, 250=9.11%, 500=0.13% cpu : usr=0.09%, sys=5.47%, ctx=1686, 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=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=692KiB/s (709kB/s), 166KiB/s-183KiB/s (170kB/s-187kB/s), io=23.4MiB (24.5MB), run=33964-34601msec WRITE: bw=728KiB/s (746kB/s), 176KiB/s-189KiB/s (181kB/s-194kB/s), io=24.6MiB (25.8MB), run=33964-34601msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149658: Tue Sep 8 22:58:09 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(5920KiB/44460msec) clat (msec): min=6, max=267, avg=47.29, stdev=45.91 lat (msec): min=6, max=267, avg=47.29, stdev=45.91 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 71], 90.00th=[ 116], 95.00th=[ 153], | 99.00th=[ 203], 99.50th=[ 266], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 31, max= 475, per=25.18%, avg=135.48, stdev=91.11, samples=84 iops : min= 1, max= 29, avg= 7.71, stdev= 5.80, samples=84 write: IOPS=8, BW=143KiB/s (147kB/s)(6368KiB/44460msec); 0 zone resets clat (msec): min=14, max=280, avg=67.43, stdev=48.74 lat (msec): min=14, max=280, avg=67.46, stdev=48.73 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 52], 60.00th=[ 63], | 70.00th=[ 83], 80.00th=[ 104], 90.00th=[ 142], 95.00th=[ 161], | 99.00th=[ 228], 99.50th=[ 249], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 30, max= 447, per=25.37%, avg=143.62, stdev=101.60, samples=86 iops : min= 1, max= 27, avg= 8.23, stdev= 6.48, samples=86 lat (msec) : 10=2.73%, 20=14.71%, 50=42.84%, 100=22.53%, 250=16.80% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.80%, ctx=1201, 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=149659: Tue Sep 8 22:58:09 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5744KiB/44141msec) clat (msec): min=7, max=242, avg=46.18, stdev=44.59 lat (msec): min=7, max=242, avg=46.19, stdev=44.59 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 37], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 111], 95.00th=[ 157], | 99.00th=[ 205], 99.50th=[ 232], 99.90th=[ 243], 99.95th=[ 243], | 99.99th=[ 243] bw ( KiB/s): min= 30, max= 479, per=25.69%, avg=138.20, stdev=100.00, samples=82 iops : min= 1, max= 29, avg= 7.90, stdev= 6.36, samples=82 write: IOPS=9, BW=148KiB/s (152kB/s)(6544KiB/44141msec); 0 zone resets clat (msec): min=15, max=301, avg=67.20, stdev=48.93 lat (msec): min=15, max=301, avg=67.20, stdev=48.93 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 35], 40.00th=[ 41], 50.00th=[ 51], 60.00th=[ 64], | 70.00th=[ 81], 80.00th=[ 105], 90.00th=[ 131], 95.00th=[ 163], | 99.00th=[ 232], 99.50th=[ 271], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 414, per=26.13%, avg=147.89, stdev=102.24, samples=87 iops : min= 1, max= 25, avg= 8.49, stdev= 6.49, samples=87 lat (msec) : 10=2.34%, 20=15.89%, 50=40.49%, 100=24.61%, 250=16.15% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.65%, ctx=1195, 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=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=149660: Tue Sep 8 22:58:09 2026 read: IOPS=8, BW=142KiB/s (145kB/s)(6256KiB/44033msec) clat (msec): min=6, max=251, avg=47.36, stdev=44.81 lat (msec): min=6, max=251, avg=47.36, stdev=44.81 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 72], 90.00th=[ 114], 95.00th=[ 146], | 99.00th=[ 232], 99.50th=[ 247], 99.90th=[ 251], 99.95th=[ 251], | 99.99th=[ 251] bw ( KiB/s): min= 31, max= 480, per=27.50%, avg=147.94, stdev=113.36, samples=83 iops : min= 1, max= 30, avg= 8.49, stdev= 7.20, samples=83 write: IOPS=8, BW=137KiB/s (140kB/s)(6032KiB/44033msec); 0 zone resets clat (msec): min=13, max=329, avg=67.38, stdev=53.56 lat (msec): min=13, max=329, avg=67.38, stdev=53.56 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 48], 60.00th=[ 63], | 70.00th=[ 78], 80.00th=[ 101], 90.00th=[ 133], 95.00th=[ 176], | 99.00th=[ 271], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 478, per=24.16%, avg=136.74, stdev=98.92, samples=85 iops : min= 1, max= 29, avg= 7.78, stdev= 6.29, samples=85 lat (msec) : 10=2.47%, 20=16.02%, 50=42.84%, 100=22.14%, 250=15.76% lat (msec) : 500=0.78% cpu : usr=0.05%, sys=1.71%, ctx=1279, 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=149661: Tue Sep 8 22:58:09 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(6032KiB/44512msec) clat (msec): min=6, max=264, avg=44.89, stdev=44.53 lat (msec): min=6, max=264, avg=44.89, stdev=44.53 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 35], | 70.00th=[ 47], 80.00th=[ 63], 90.00th=[ 105], 95.00th=[ 153], | 99.00th=[ 215], 99.50th=[ 230], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 30, max= 541, per=26.00%, avg=139.90, stdev=102.36, samples=83 iops : min= 1, max= 33, avg= 8.00, stdev= 6.46, samples=83 write: IOPS=8, BW=141KiB/s (144kB/s)(6256KiB/44512msec); 0 zone resets clat (msec): min=13, max=340, avg=70.23, stdev=59.02 lat (msec): min=13, max=340, avg=70.23, stdev=59.02 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 20], 10.00th=[ 23], 20.00th=[ 27], | 30.00th=[ 32], 40.00th=[ 39], 50.00th=[ 49], 60.00th=[ 62], | 70.00th=[ 82], 80.00th=[ 107], 90.00th=[ 142], 95.00th=[ 186], | 99.00th=[ 321], 99.50th=[ 326], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 31, max= 447, per=25.08%, avg=141.93, stdev=103.76, samples=85 iops : min= 1, max= 27, avg= 8.12, stdev= 6.61, samples=85 lat (msec) : 10=2.60%, 20=17.32%, 50=41.67%, 100=21.74%, 250=15.36% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.75%, ctx=1176, 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=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=538KiB/s (551kB/s), 130KiB/s-142KiB/s (133kB/s-145kB/s), io=23.4MiB (24.5MB), run=44033-44512msec WRITE: bw=566KiB/s (580kB/s), 137KiB/s-148KiB/s (140kB/s-152kB/s), io=24.6MiB (25.8MB), run=44033-44512msec 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=149679: Tue Sep 8 22:58:23 2026 read: IOPS=1, BW=1991KiB/s (2038kB/s)(7168KiB/3601msec) clat (usec): min=559, max=247353, avg=181566.18, stdev=82763.53 lat (usec): min=560, max=247354, avg=181567.55, stdev=82763.61 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], 20.00th=[187696], | 30.00th=[191890], 40.00th=[191890], 50.00th=[200279], 60.00th=[208667], | 70.00th=[208667], 80.00th=[233833], 90.00th=[246416], 95.00th=[246416], | 99.00th=[246416], 99.50th=[246416], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 2023, max= 4087, per=58.64%, avg=2979.75, stdev=1107.35, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1422KiB/s (1456kB/s)(5120KiB/3601msec); 0 zone resets clat (msec): min=175, max=774, avg=446.49, stdev=264.01 lat (msec): min=175, max=775, avg=446.84, stdev=264.14 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 178], 40.00th=[ 178], 50.00th=[ 523], 60.00th=[ 523], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 776], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1973, max= 4063, per=37.76%, avg=2686.33, stdev=1192.49, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=17.58%, ctx=267, 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=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=149680: Tue Sep 8 22:58:23 2026 read: IOPS=0, BW=508KiB/s (520kB/s)(2048KiB/4030msec) clat (msec): min=248, max=252, avg=250.83, stdev= 2.68 lat (msec): min=248, max=252, avg=250.84, stdev= 2.68 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 249], 60.00th=[ 253], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 253], 95.00th=[ 253], | 99.00th=[ 253], 99.50th=[ 253], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 1899, max= 2031, per=38.67%, avg=1965.00, stdev=93.34, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2541KiB/s (2602kB/s)(10.0MiB/4030msec); 0 zone resets clat (msec): min=123, max=845, avg=343.74, stdev=255.95 lat (msec): min=123, max=845, avg=344.00, stdev=255.79 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 142], | 30.00th=[ 176], 40.00th=[ 192], 50.00th=[ 199], 60.00th=[ 230], | 70.00th=[ 300], 80.00th=[ 531], 90.00th=[ 701], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 1973, max= 5873, per=44.80%, avg=3187.20, stdev=1754.29, samples=5 iops : min= 1, max= 5, avg= 2.20, stdev= 1.79, samples=5 lat (msec) : 250=58.33%, 500=16.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=22.07%, ctx=201, 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=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=149681: Tue Sep 8 22:58:23 2026 read: IOPS=1, BW=1830KiB/s (1874kB/s)(6144KiB/3357msec) clat (usec): min=566, max=321263, avg=106696.04, stdev=133841.54 lat (usec): min=568, max=321265, avg=106697.13, stdev=133841.68 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[ 791], | 30.00th=[ 791], 40.00th=[ 40633], 50.00th=[ 40633], 60.00th=[ 53216], | 70.00th=[223347], 80.00th=[223347], 90.00th=[320865], 95.00th=[320865], | 99.00th=[320865], 99.50th=[320865], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 1980, max= 4087, per=65.69%, avg=3337.67, stdev=1177.89, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1830KiB/s (1874kB/s)(6144KiB/3357msec); 0 zone resets clat (msec): min=206, max=780, avg=445.92, stdev=243.20 lat (msec): min=206, max=780, avg=446.02, stdev=243.18 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 518], | 70.00th=[ 659], 80.00th=[ 659], 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= 1921, max= 2043, per=27.94%, avg=1988.00, stdev=47.51, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 50=8.33%, 100=8.33%, 250=25.00%, 500=16.67%, 750=16.67% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=15.17%, ctx=254, 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=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=149682: Tue Sep 8 22:58:23 2026 read: IOPS=1, BW=1865KiB/s (1909kB/s)(5120KiB/2746msec) clat (usec): min=526, max=295121, avg=92772.32, stdev=133808.87 lat (usec): min=527, max=295123, avg=92773.23, stdev=133809.14 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 570], 40.00th=[ 570], 50.00th=[ 1647], 60.00th=[ 1647], | 70.00th=[166724], 80.00th=[166724], 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= 1973, max= 6144, per=79.88%, avg=4058.50, stdev=2949.34, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=2610KiB/s (2673kB/s)(7168KiB/2746msec); 0 zone resets clat (msec): min=170, max=707, avg=319.51, stdev=187.50 lat (msec): min=170, max=707, avg=319.71, stdev=187.47 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 186], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 257], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 405], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1402, max= 4087, per=34.96%, avg=2487.33, stdev=1414.46, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 750=16.67% lat (msec) : 2=8.33%, 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=22.59%, ctx=149, 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=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=5082KiB/s (5204kB/s), 508KiB/s-1991KiB/s (520kB/s-2038kB/s), io=20.0MiB (20.0MB), run=2746-4030msec WRITE: bw=7115KiB/s (7285kB/s), 1422KiB/s-2610KiB/s (1456kB/s-2673kB/s), io=28.0MiB (29.4MB), run=2746-4030msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149684: Tue Sep 8 22:58:24 2026 read: IOPS=1, BW=1710KiB/s (1751kB/s)(7168KiB/4193msec) clat (msec): min=84, max=1026, avg=362.14, stdev=329.33 lat (msec): min=84, max=1026, avg=362.14, stdev=329.33 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 114], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 236], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 1946, max= 2039, per=42.75%, avg=1998.67, stdev=40.74, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=1, BW=1221KiB/s (1250kB/s)(5120KiB/4193msec); 0 zone resets clat (msec): min=65, max=738, avg=300.76, stdev=265.16 lat (msec): min=65, max=738, avg=300.91, stdev=265.18 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 66], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 2015, max= 6119, per=51.76%, avg=3388.33, stdev=2364.84, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 100=16.67%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.82%, ctx=112, 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=149685: Tue Sep 8 22:58:24 2026 read: IOPS=0, BW=481KiB/s (492kB/s)(2048KiB/4261msec) clat (msec): min=151, max=275, avg=213.20, stdev=87.93 lat (msec): min=151, max=275, avg=213.20, stdev=87.93 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 153], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 275], 95.00th=[ 275], | 99.00th=[ 275], 99.50th=[ 275], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 1992, max= 2007, per=42.77%, avg=1999.50, stdev=10.61, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2403KiB/s (2461kB/s)(10.0MiB/4261msec); 0 zone resets clat (msec): min=115, max=1095, avg=383.05, stdev=297.79 lat (msec): min=115, max=1095, avg=383.14, stdev=297.80 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 117], | 30.00th=[ 165], 40.00th=[ 192], 50.00th=[ 300], 60.00th=[ 326], | 70.00th=[ 456], 80.00th=[ 493], 90.00th=[ 575], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 2007, max= 4079, per=40.87%, avg=2675.17, stdev=1019.68, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=41.67%, 500=41.67%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=8.57%, ctx=135, 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=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=149686: Tue Sep 8 22:58:24 2026 read: IOPS=1, BW=1522KiB/s (1558kB/s)(6144KiB/4037msec) clat (msec): min=116, max=642, avg=248.96, stdev=200.99 lat (msec): min=116, max=642, avg=248.96, stdev=201.00 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 116], 10.00th=[ 116], 20.00th=[ 124], | 30.00th=[ 124], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 197], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 1950, max= 2031, per=42.80%, avg=2000.75, stdev=35.27, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1522KiB/s (1558kB/s)(6144KiB/4037msec); 0 zone resets clat (msec): min=68, max=1044, avg=408.72, stdev=350.18 lat (msec): min=68, max=1044, avg=408.81, stdev=350.19 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 451], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 1692, max= 2048, per=29.49%, avg=1930.25, stdev=164.49, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=5.70%, ctx=92, majf=0, minf=13 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=149687: Tue Sep 8 22:58:24 2026 read: IOPS=1, BW=1169KiB/s (1197kB/s)(5120KiB/4380msec) clat (msec): min=83, max=714, avg=314.99, stdev=259.12 lat (msec): min=83, max=714, avg=315.00, stdev=259.11 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 84], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 326], 60.00th=[ 326], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 2007, max= 4031, per=57.59%, avg=2692.33, stdev=1159.43, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1637KiB/s (1676kB/s)(7168KiB/4380msec); 0 zone resets clat (msec): min=65, max=969, avg=386.14, stdev=338.15 lat (msec): min=65, max=969, avg=386.43, stdev=338.26 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 120], | 30.00th=[ 122], 40.00th=[ 122], 50.00th=[ 253], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 617], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1950, max= 4063, per=38.57%, avg=2525.00, stdev=1026.29, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=25.00%, 250=16.67%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=7.26%, ctx=82, 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=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=4676KiB/s (4788kB/s), 481KiB/s-1710KiB/s (492kB/s-1751kB/s), io=20.0MiB (20.0MB), run=4037-4380msec WRITE: bw=6546KiB/s (6703kB/s), 1221KiB/s-2403KiB/s (1250kB/s-2461kB/s), io=28.0MiB (29.4MB), run=4037-4380msec 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=149698: Tue Sep 8 22:58:35 2026 read: IOPS=1, BW=5371KiB/s (5500kB/s)(12.0MiB/2288msec) clat (msec): min=234, max=1046, avg=762.29, stdev=457.13 lat (msec): min=234, max=1046, avg=762.29, stdev=457.13 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1045], 80.00th=[ 1045], 90.00th=[ 1045], 95.00th=[ 1045], | 99.00th=[ 1045], 99.50th=[ 1045], 99.90th=[ 1045], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.82%, ctx=58, majf=0, minf=7 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=149699: Tue Sep 8 22:58:35 2026 read: IOPS=0, BW=1739KiB/s (1780kB/s)(4096KiB/2356msec) clat (nsec): min=770916k, max=770916k, avg=770916181.00, stdev= 0.00 lat (nsec): min=770919k, max=770919k, avg=770918857.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 768], 80.00th=[ 768], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3477KiB/s (3561kB/s)(8192KiB/2356msec); 0 zone resets clat (msec): min=342, max=1199, avg=771.15, stdev=606.02 lat (msec): min=343, max=1202, avg=772.76, stdev=607.68 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8110, max= 8110, per=66.26%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.92%, ctx=56, 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=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=149700: Tue Sep 8 22:58:35 2026 write: IOPS=1, BW=4590KiB/s (4700kB/s)(12.0MiB/2677msec); 0 zone resets clat (msec): min=243, max=1231, avg=889.44, stdev=559.45 lat (msec): min=245, max=1231, avg=890.17, stdev=558.93 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8015, max= 8110, per=65.87%, avg=8062.50, stdev=67.18, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.93%, ctx=53, majf=0, minf=7 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=149701: Tue Sep 8 22:58:35 2026 write: IOPS=1, BW=6484KiB/s (6640kB/s)(12.0MiB/1895msec); 0 zone resets clat (msec): min=618, max=651, avg=630.77, stdev=17.71 lat (msec): min=618, max=651, avg=631.21, stdev=17.64 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 8110, max= 8175, per=66.52%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=10.98%, ctx=46, majf=0, minf=7 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=6954KiB/s (7121kB/s), 1739KiB/s-5371KiB/s (1780kB/s-5500kB/s), io=16.0MiB (16.8MB), run=2288-2356msec WRITE: bw=11.0MiB/s (12.5MB/s), 3477KiB/s-6484KiB/s (3561kB/s-6640kB/s), io=32.0MiB (33.6MB), run=1895-2677msec rand-rw: (groupid=0, jobs=1): err= 0: pid=149693: Tue Sep 8 22:58:35 2026 read: IOPS=1, BW=5815KiB/s (5955kB/s)(12.0MiB/2113msec) clat (msec): min=632, max=714, avg=680.45, stdev=42.57 lat (msec): min=632, max=714, avg=680.45, stdev=42.57 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7876, max= 8126, per=100.00%, avg=8001.00, stdev=176.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=21.16%, ctx=609, majf=0, minf=7 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=149694: Tue Sep 8 22:58:35 2026 read: IOPS=0, BW=1902KiB/s (1948kB/s)(4096KiB/2153msec) clat (nsec): min=641026k, max=641026k, avg=641025885.00, stdev= 0.00 lat (nsec): min=641029k, max=641029k, avg=641028726.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3805KiB/s (3896kB/s)(8192KiB/2153msec); 0 zone resets clat (msec): min=569, max=842, avg=705.76, stdev=192.91 lat (msec): min=571, max=843, avg=707.43, stdev=192.78 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 844], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 844], 95.00th=[ 844], | 99.00th=[ 844], 99.50th=[ 844], 99.90th=[ 844], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7876, max= 7876, per=79.76%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=10.46%, ctx=168, 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=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=149695: Tue Sep 8 22:58:35 2026 write: IOPS=0, BW=3703KiB/s (3792kB/s)(12.0MiB/3318msec); 0 zone resets clat (msec): min=262, max=1676, avg=1074.25, stdev=729.99 lat (msec): min=263, max=1677, avg=1074.81, stdev=729.95 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 1670], 80.00th=[ 1670], 90.00th=[ 1670], 95.00th=[ 1670], | 99.00th=[ 1670], 99.50th=[ 1670], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8031, max= 8175, per=82.06%, avg=8103.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=5.31%, ctx=53, majf=0, minf=7 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=149696: Tue Sep 8 22:58:35 2026 write: IOPS=1, BW=5846KiB/s (5986kB/s)(12.0MiB/2102msec); 0 zone resets clat (msec): min=436, max=1115, avg=677.80, stdev=379.39 lat (msec): min=436, max=1115, avg=678.24, stdev=379.51 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 6942, max= 8126, per=76.29%, avg=7534.00, stdev=837.21, 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=0.00%, sys=7.38%, ctx=57, 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 Run status group 0 (all jobs): READ: bw=7610KiB/s (7792kB/s), 1902KiB/s-5815KiB/s (1948kB/s-5955kB/s), io=16.0MiB (16.8MB), run=2113-2153msec WRITE: bw=9876KiB/s (10.1MB/s), 3703KiB/s-5846KiB/s (3792kB/s-5986kB/s), io=32.0MiB (33.6MB), run=2102-3318msec