== sanity test 398b: DIO and buffer IO race ============== 17:41:05 (1786484465) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.82599 s, 8.6 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=179153: Tue Aug 11 17:43:34 2026 read: IOPS=11, BW=46.6KiB/s (47.8kB/s)(5992KiB/128487msec) clat (usec): min=45, max=639170, avg=47341.68, stdev=45805.03 lat (usec): min=45, max=639172, avg=47343.39, stdev=45805.02 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 10683], 10.00th=[ 14353], 20.00th=[ 19530], | 30.00th=[ 24511], 40.00th=[ 29492], 50.00th=[ 34866], 60.00th=[ 41157], | 70.00th=[ 50070], 80.00th=[ 66323], 90.00th=[ 93848], 95.00th=[125305], | 99.00th=[233833], 99.50th=[258999], 99.90th=[534774], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 7, max= 143, per=24.93%, avg=46.38, stdev=25.32, samples=250 iops : min= 1, max= 35, avg=10.99, stdev= 6.35, samples=250 write: IOPS=12, BW=49.0KiB/s (50.2kB/s)(6296KiB/128487msec); 0 zone resets clat (usec): min=1104, max=297031, avg=36410.09, stdev=41731.49 lat (usec): min=1106, max=297032, avg=36413.54, stdev=41733.77 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 2114], 10.00th=[ 2835], 20.00th=[ 4359], | 30.00th=[ 8717], 40.00th=[ 16450], 50.00th=[ 23987], 60.00th=[ 31065], | 70.00th=[ 42206], 80.00th=[ 57934], 90.00th=[ 88605], 95.00th=[123208], | 99.00th=[198181], 99.50th=[227541], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 5, max= 183, per=25.23%, avg=49.19, stdev=28.70, samples=248 iops : min= 1, max= 45, avg=11.69, stdev= 7.17, samples=248 lat (usec) : 50=0.03%, 100=0.94%, 250=0.33%, 500=0.10%, 750=0.07% lat (msec) : 2=2.28%, 4=7.10%, 10=7.75%, 20=14.49%, 50=39.81% lat (msec) : 100=18.88%, 250=7.78%, 500=0.39%, 750=0.07% cpu : usr=0.07%, sys=6.85%, ctx=7665, 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=179154: Tue Aug 11 17:43:34 2026 read: IOPS=11, BW=46.4KiB/s (47.5kB/s)(5940KiB/128051msec) clat (usec): min=49, max=853303, avg=48643.71, stdev=44892.74 lat (usec): min=50, max=853304, avg=48646.83, stdev=44894.77 clat percentiles (usec): | 1.00th=[ 75], 5.00th=[ 12256], 10.00th=[ 15270], 20.00th=[ 20579], | 30.00th=[ 25297], 40.00th=[ 30278], 50.00th=[ 36963], 60.00th=[ 44303], | 70.00th=[ 53740], 80.00th=[ 68682], 90.00th=[ 92799], 95.00th=[120062], | 99.00th=[202376], 99.50th=[235930], 99.90th=[362808], 99.95th=[851444], | 99.99th=[851444] bw ( KiB/s): min= 5, max= 128, per=25.06%, avg=46.61, stdev=25.57, samples=247 iops : min= 1, max= 32, avg=11.04, stdev= 6.42, samples=247 write: IOPS=12, BW=49.6KiB/s (50.8kB/s)(6348KiB/128051msec); 0 zone resets clat (usec): min=996, max=582986, avg=35000.47, stdev=42803.79 lat (usec): min=997, max=582987, avg=35015.15, stdev=42796.96 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 2180], 10.00th=[ 2769], 20.00th=[ 4621], | 30.00th=[ 8717], 40.00th=[ 15401], 50.00th=[ 21890], 60.00th=[ 29230], | 70.00th=[ 40633], 80.00th=[ 54789], 90.00th=[ 84411], 95.00th=[113771], | 99.00th=[200279], 99.50th=[221250], 99.90th=[396362], 99.95th=[583009], | 99.99th=[583009] bw ( KiB/s): min= 7, max= 173, per=25.52%, avg=49.77, stdev=28.84, samples=246 iops : min= 1, max= 43, avg=11.85, stdev= 7.25, samples=246 lat (usec) : 50=0.03%, 100=0.65%, 250=0.26%, 500=0.03%, 1000=0.07% lat (msec) : 2=1.95%, 4=7.00%, 10=7.65%, 20=15.72%, 50=39.00% lat (msec) : 100=19.56%, 250=7.71%, 500=0.29%, 750=0.03%, 1000=0.03% cpu : usr=0.06%, sys=6.91%, ctx=7735, 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=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=179155: Tue Aug 11 17:43:34 2026 read: IOPS=11, BW=47.2KiB/s (48.4kB/s)(6028KiB/127609msec) clat (usec): min=43, max=460656, avg=46592.88, stdev=42709.88 lat (usec): min=44, max=460658, avg=46596.35, stdev=42710.03 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 10290], 10.00th=[ 14353], 20.00th=[ 19268], | 30.00th=[ 24249], 40.00th=[ 29754], 50.00th=[ 34866], 60.00th=[ 41157], | 70.00th=[ 51119], 80.00th=[ 63177], 90.00th=[ 90702], 95.00th=[128451], | 99.00th=[202376], 99.50th=[242222], 99.90th=[450888], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 5, max= 127, per=25.54%, avg=47.51, stdev=25.39, samples=245 iops : min= 1, max= 31, avg=11.28, stdev= 6.36, samples=245 write: IOPS=12, BW=49.1KiB/s (50.2kB/s)(6260KiB/127609msec); 0 zone resets clat (usec): min=1033, max=686953, avg=36556.20, stdev=47460.27 lat (usec): min=1035, max=686955, avg=36559.00, stdev=47460.07 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 1991], 10.00th=[ 2671], 20.00th=[ 4228], | 30.00th=[ 8094], 40.00th=[ 15139], 50.00th=[ 22414], 60.00th=[ 31327], | 70.00th=[ 42206], 80.00th=[ 56361], 90.00th=[ 88605], 95.00th=[123208], | 99.00th=[193987], 99.50th=[256902], 99.90th=[522191], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 143, per=25.02%, avg=48.78, stdev=28.29, samples=247 iops : min= 1, max= 35, avg=11.59, stdev= 7.10, samples=247 lat (usec) : 50=0.10%, 100=1.30%, 250=0.39%, 500=0.07% lat (msec) : 2=2.64%, 4=7.13%, 10=7.45%, 20=14.97%, 50=38.87% lat (msec) : 100=19.08%, 250=7.52%, 500=0.42%, 750=0.07% cpu : usr=0.08%, sys=6.91%, ctx=7630, 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=179156: Tue Aug 11 17:43:34 2026 read: IOPS=11, BW=47.4KiB/s (48.5kB/s)(6052KiB/127795msec) clat (usec): min=37, max=461690, avg=46803.08, stdev=41717.52 lat (usec): min=37, max=461692, avg=46810.64, stdev=41719.68 clat percentiles (usec): | 1.00th=[ 60], 5.00th=[ 11863], 10.00th=[ 15139], 20.00th=[ 19530], | 30.00th=[ 23987], 40.00th=[ 29230], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 62653], 90.00th=[ 91751], 95.00th=[125305], | 99.00th=[208667], 99.50th=[263193], 99.90th=[316670], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 7, max= 119, per=25.51%, avg=47.46, stdev=25.29, samples=248 iops : min= 1, max= 29, avg=11.27, stdev= 6.34, samples=248 write: IOPS=12, BW=48.8KiB/s (49.0kB/s)(6236KiB/127795msec); 0 zone resets clat (usec): min=1197, max=710569, avg=36351.74, stdev=45049.80 lat (usec): min=1199, max=710571, avg=36355.09, stdev=45049.25 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2073], 10.00th=[ 2802], 20.00th=[ 5014], | 30.00th=[ 9503], 40.00th=[ 16319], 50.00th=[ 23462], 60.00th=[ 32113], | 70.00th=[ 41681], 80.00th=[ 55837], 90.00th=[ 83362], 95.00th=[120062], | 99.00th=[202376], 99.50th=[227541], 99.90th=[421528], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 7, max= 143, per=25.27%, avg=49.28, stdev=26.56, samples=246 iops : min= 1, max= 35, avg=11.70, stdev= 6.65, samples=246 lat (usec) : 50=0.13%, 100=0.88%, 250=0.23%, 500=0.03% lat (msec) : 2=2.21%, 4=6.09%, 10=7.88%, 20=15.66%, 50=39.78% lat (msec) : 100=19.43%, 250=7.23%, 500=0.42%, 750=0.03% cpu : usr=0.08%, sys=7.02%, ctx=7634, 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=187KiB/s (191kB/s), 46.4KiB/s-47.4KiB/s (47.5kB/s-48.5kB/s), io=23.4MiB (24.6MB), run=127609-128487msec WRITE: bw=196KiB/s (200kB/s), 48.8KiB/s-49.6KiB/s (49.0kB/s-50.8kB/s), io=24.6MiB (25.7MB), run=127609-128487msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179148: Tue Aug 11 17:43:53 2026 read: IOPS=10, BW=40.2KiB/s (41.2kB/s)(5992KiB/148991msec) clat (msec): min=4, max=1004, avg=40.54, stdev=59.08 lat (msec): min=4, max=1004, avg=40.55, stdev=59.08 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 28], | 70.00th=[ 39], 80.00th=[ 59], 90.00th=[ 100], 95.00th=[ 144], | 99.00th=[ 253], 99.50th=[ 292], 99.90th=[ 827], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 224, per=26.12%, avg=42.05, stdev=44.44, samples=277 iops : min= 1, max= 56, avg= 9.92, stdev=11.19, samples=277 write: IOPS=10, BW=42.3KiB/s (43.3kB/s)(6296KiB/148991msec); 0 zone resets clat (msec): min=4, max=479, avg=55.64, stdev=59.62 lat (msec): min=4, max=479, avg=55.65, stdev=59.63 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 24], 50.00th=[ 32], 60.00th=[ 46], | 70.00th=[ 63], 80.00th=[ 84], 90.00th=[ 131], 95.00th=[ 171], | 99.00th=[ 313], 99.50th=[ 338], 99.90th=[ 426], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7, max= 199, per=25.52%, avg=42.88, stdev=43.47, samples=286 iops : min= 1, max= 49, avg=10.12, stdev=10.97, samples=286 lat (msec) : 10=12.89%, 20=28.81%, 50=28.06%, 100=17.58%, 250=11.07% lat (msec) : 500=1.53%, 1000=0.03%, 2000=0.03% cpu : usr=0.07%, sys=3.62%, ctx=5633, 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=179149: Tue Aug 11 17:43:53 2026 read: IOPS=9, BW=39.9KiB/s (40.9kB/s)(5940KiB/148800msec) clat (msec): min=4, max=1157, avg=40.62, stdev=60.66 lat (msec): min=4, max=1157, avg=40.62, stdev=60.66 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 29], | 70.00th=[ 41], 80.00th=[ 59], 90.00th=[ 91], 95.00th=[ 133], | 99.00th=[ 245], 99.50th=[ 292], 99.90th=[ 785], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 231, per=26.62%, avg=42.86, stdev=44.14, samples=271 iops : min= 1, max= 57, avg=10.13, stdev=11.13, samples=271 write: IOPS=10, BW=42.7KiB/s (43.7kB/s)(6348KiB/148800msec); 0 zone resets clat (msec): min=6, max=499, avg=55.32, stdev=58.43 lat (msec): min=6, max=499, avg=55.33, stdev=58.43 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 32], 60.00th=[ 45], | 70.00th=[ 61], 80.00th=[ 87], 90.00th=[ 129], 95.00th=[ 178], | 99.00th=[ 271], 99.50th=[ 330], 99.90th=[ 418], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7, max= 224, per=26.30%, avg=44.18, stdev=43.48, samples=281 iops : min= 1, max= 56, avg=10.46, stdev=10.96, samples=281 lat (msec) : 10=12.24%, 20=29.13%, 50=28.45%, 100=17.61%, 250=11.30% lat (msec) : 500=1.17%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.06%, sys=3.71%, ctx=5751, 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=179150: Tue Aug 11 17:43:53 2026 read: IOPS=10, BW=40.4KiB/s (41.4kB/s)(6028KiB/149142msec) clat (msec): min=4, max=634, avg=40.62, stdev=50.67 lat (msec): min=4, max=634, avg=40.62, stdev=50.67 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 17], 50.00th=[ 22], 60.00th=[ 30], | 70.00th=[ 42], 80.00th=[ 61], 90.00th=[ 100], 95.00th=[ 140], | 99.00th=[ 236], 99.50th=[ 284], 99.90th=[ 384], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 263, per=26.20%, avg=42.19, stdev=42.89, samples=277 iops : min= 1, max= 65, avg= 9.95, stdev=10.81, samples=277 write: IOPS=10, BW=41.0KiB/s (42.0kB/s)(6260KiB/149142msec); 0 zone resets clat (msec): min=7, max=1189, avg=55.78, stdev=68.28 lat (msec): min=7, max=1189, avg=55.78, stdev=68.29 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 23], 50.00th=[ 32], 60.00th=[ 45], | 70.00th=[ 62], 80.00th=[ 82], 90.00th=[ 132], 95.00th=[ 178], | 99.00th=[ 284], 99.50th=[ 351], 99.90th=[ 827], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 240, per=25.56%, avg=42.94, stdev=45.01, samples=282 iops : min= 1, max= 60, avg=10.13, stdev=11.35, samples=282 lat (msec) : 10=13.18%, 20=28.09%, 50=28.16%, 100=18.00%, 250=11.33% lat (msec) : 500=1.11%, 750=0.07%, 1000=0.03%, 2000=0.03% cpu : usr=0.06%, sys=3.46%, ctx=5541, 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=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=179151: Tue Aug 11 17:43:53 2026 read: IOPS=10, BW=40.6KiB/s (41.6kB/s)(6052KiB/148946msec) clat (msec): min=4, max=405, avg=39.03, stdev=47.45 lat (msec): min=4, max=405, avg=39.03, stdev=47.46 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 22], 60.00th=[ 29], | 70.00th=[ 41], 80.00th=[ 59], 90.00th=[ 94], 95.00th=[ 127], | 99.00th=[ 241], 99.50th=[ 284], 99.90th=[ 393], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 7, max= 224, per=26.88%, avg=43.28, stdev=44.29, samples=273 iops : min= 1, max= 56, avg=10.22, stdev=11.16, samples=273 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6236KiB/148946msec); 0 zone resets clat (msec): min=7, max=1175, avg=57.24, stdev=70.51 lat (msec): min=7, max=1175, avg=57.24, stdev=70.51 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 24], 50.00th=[ 32], 60.00th=[ 46], | 70.00th=[ 63], 80.00th=[ 86], 90.00th=[ 133], 95.00th=[ 180], | 99.00th=[ 313], 99.50th=[ 384], 99.90th=[ 802], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 240, per=25.63%, avg=43.06, stdev=43.62, samples=282 iops : min= 1, max= 60, avg=10.16, stdev=11.01, samples=282 lat (msec) : 10=12.70%, 20=29.00%, 50=27.44%, 100=18.42%, 250=11.04% lat (msec) : 500=1.27%, 750=0.07%, 1000=0.03%, 2000=0.03% cpu : usr=0.06%, sys=3.61%, ctx=5580, 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=161KiB/s (165kB/s), 39.9KiB/s-40.6KiB/s (40.9kB/s-41.6kB/s), io=23.4MiB (24.6MB), run=148800-149142msec WRITE: bw=169KiB/s (173kB/s), 41.9KiB/s-42.7KiB/s (42.9kB/s-43.7kB/s), io=24.6MiB (25.7MB), run=148800-149142msec 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=179199: Tue Aug 11 17:44:19 2026 read: IOPS=18, BW=302KiB/s (309kB/s)(5920KiB/19604msec) clat (usec): min=83, max=94797, avg=26591.31, stdev=14743.53 lat (usec): min=84, max=94798, avg=26592.62, stdev=14743.51 clat percentiles (usec): | 1.00th=[ 111], 5.00th=[ 204], 10.00th=[11338], 20.00th=[15795], | 30.00th=[19268], 40.00th=[22414], 50.00th=[25035], 60.00th=[27657], | 70.00th=[31065], 80.00th=[35914], 90.00th=[45351], 95.00th=[52167], | 99.00th=[78119], 99.50th=[86508], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 190, max= 574, per=25.96%, avg=302.15, stdev=78.26, samples=39 iops : min= 11, max= 35, avg=18.23, stdev= 4.94, samples=39 write: IOPS=20, BW=325KiB/s (333kB/s)(6368KiB/19604msec); 0 zone resets clat (usec): min=1857, max=132820, avg=24232.53, stdev=16974.31 lat (usec): min=1859, max=132822, avg=24234.49, stdev=16974.37 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 14], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 30], 80.00th=[ 37], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 74], 99.50th=[ 117], 99.90th=[ 133], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 188, max= 541, per=26.47%, avg=324.26, stdev=76.02, samples=39 iops : min= 11, max= 33, avg=19.62, stdev= 4.74, samples=39 lat (usec) : 100=0.39%, 250=2.21%, 500=0.52%, 1000=0.13% lat (msec) : 2=0.39%, 4=1.04%, 10=11.46%, 20=22.53%, 50=54.43% lat (msec) : 100=6.64%, 250=0.26% cpu : usr=0.12%, sys=23.41%, ctx=2806, 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=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=179200: Tue Aug 11 17:44:19 2026 read: IOPS=17, BW=279KiB/s (286kB/s)(5744KiB/20569msec) clat (usec): min=83, max=98871, avg=28794.38, stdev=13799.41 lat (usec): min=85, max=98872, avg=28795.82, stdev=13799.17 clat percentiles (usec): | 1.00th=[ 106], 5.00th=[10552], 10.00th=[14222], 20.00th=[17957], | 30.00th=[20841], 40.00th=[24249], 50.00th=[27395], 60.00th=[30278], | 70.00th=[33817], 80.00th=[39584], 90.00th=[45876], 95.00th=[53740], | 99.00th=[69731], 99.50th=[79168], 99.90th=[99091], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 62, max= 512, per=23.59%, avg=274.60, stdev=87.34, samples=40 iops : min= 3, max= 32, avg=16.50, stdev= 5.55, samples=40 write: IOPS=19, BW=318KiB/s (326kB/s)(6544KiB/20569msec); 0 zone resets clat (usec): min=1646, max=106912, avg=24708.13, stdev=18213.25 lat (usec): min=1647, max=106914, avg=24710.30, stdev=18213.14 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 50], 95.00th=[ 60], | 99.00th=[ 85], 99.50th=[ 90], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 95, max= 512, per=25.27%, avg=309.60, stdev=90.05, samples=40 iops : min= 5, max= 32, avg=18.70, stdev= 5.67, samples=40 lat (usec) : 100=0.39%, 250=1.04%, 500=0.13% lat (msec) : 2=0.52%, 4=1.82%, 10=10.94%, 20=23.31%, 50=53.91% lat (msec) : 100=7.81%, 250=0.13% cpu : usr=0.09%, sys=22.54%, ctx=3002, 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=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=179201: Tue Aug 11 17:44:19 2026 read: IOPS=19, BW=311KiB/s (319kB/s)(6256KiB/20107msec) clat (usec): min=53, max=91806, avg=27581.37, stdev=13960.12 lat (usec): min=54, max=91807, avg=27582.63, stdev=13960.18 clat percentiles (usec): | 1.00th=[ 75], 5.00th=[ 186], 10.00th=[13829], 20.00th=[17433], | 30.00th=[20317], 40.00th=[23200], 50.00th=[26084], 60.00th=[29492], | 70.00th=[32637], 80.00th=[37487], 90.00th=[44303], 95.00th=[50070], | 99.00th=[73925], 99.50th=[89654], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 158, max= 507, per=26.74%, avg=311.23, stdev=82.85, samples=40 iops : min= 9, max= 31, avg=18.80, stdev= 5.23, samples=40 write: IOPS=18, BW=300KiB/s (307kB/s)(6032KiB/20107msec); 0 zone resets clat (usec): min=1918, max=87087, avg=24549.39, stdev=16819.07 lat (usec): min=1920, max=87088, avg=24551.35, stdev=16819.06 clat percentiles (usec): | 1.00th=[ 2442], 5.00th=[ 4424], 10.00th=[ 5997], 20.00th=[ 9372], | 30.00th=[13435], 40.00th=[17171], 50.00th=[20841], 60.00th=[25297], | 70.00th=[30540], 80.00th=[38011], 90.00th=[48497], 95.00th=[60556], | 99.00th=[68682], 99.50th=[86508], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 159, max= 507, per=24.43%, avg=299.28, stdev=84.00, samples=40 iops : min= 9, max= 31, avg=18.05, stdev= 5.27, samples=40 lat (usec) : 100=0.78%, 250=1.95%, 500=0.13% lat (msec) : 2=0.26%, 4=1.82%, 10=9.77%, 20=22.66%, 50=55.34% lat (msec) : 100=7.29% cpu : usr=0.06%, sys=22.55%, ctx=3008, 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=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=179202: Tue Aug 11 17:44:19 2026 read: IOPS=18, BW=300KiB/s (307kB/s)(6032KiB/20099msec) clat (usec): min=49, max=113317, avg=28018.24, stdev=15558.41 lat (usec): min=50, max=113318, avg=28019.33, stdev=15558.41 clat percentiles (usec): | 1.00th=[ 88], 5.00th=[ 155], 10.00th=[ 10421], 20.00th=[ 16188], | 30.00th=[ 20841], 40.00th=[ 24511], 50.00th=[ 27132], 60.00th=[ 31065], | 70.00th=[ 34866], 80.00th=[ 38536], 90.00th=[ 45876], 95.00th=[ 54789], | 99.00th=[ 68682], 99.50th=[ 89654], 99.90th=[113771], 99.95th=[113771], | 99.99th=[113771] bw ( KiB/s): min= 94, max= 476, per=25.48%, avg=296.54, stdev=81.27, samples=39 iops : min= 5, max= 29, avg=17.87, stdev= 5.11, samples=39 write: IOPS=19, BW=311KiB/s (319kB/s)(6256KiB/20099msec); 0 zone resets clat (usec): min=1954, max=84378, avg=23945.00, stdev=16045.74 lat (usec): min=1956, max=84379, avg=23947.21, stdev=16045.50 clat percentiles (usec): | 1.00th=[ 2343], 5.00th=[ 4948], 10.00th=[ 6587], 20.00th=[ 8979], | 30.00th=[13042], 40.00th=[16057], 50.00th=[21103], 60.00th=[24773], | 70.00th=[31065], 80.00th=[38536], 90.00th=[44827], 95.00th=[51643], | 99.00th=[77071], 99.50th=[80217], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 125, max= 480, per=25.41%, avg=311.23, stdev=87.19, samples=39 iops : min= 7, max= 30, avg=18.79, stdev= 5.51, samples=39 lat (usec) : 50=0.13%, 100=0.78%, 250=3.12%, 500=0.26% lat (msec) : 2=0.26%, 4=1.17%, 10=10.81%, 20=21.61%, 50=55.21% lat (msec) : 100=6.51%, 250=0.13% cpu : usr=0.10%, sys=22.36%, ctx=2901, 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=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=1164KiB/s (1192kB/s), 279KiB/s-311KiB/s (286kB/s-319kB/s), io=23.4MiB (24.5MB), run=19604-20569msec WRITE: bw=1225KiB/s (1255kB/s), 300KiB/s-325KiB/s (307kB/s-333kB/s), io=24.6MiB (25.8MB), run=19604-20569msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179195: Tue Aug 11 17:44:22 2026 read: IOPS=15, BW=255KiB/s (261kB/s)(5920KiB/23218msec) clat (msec): min=5, max=105, avg=25.20, stdev=19.70 lat (msec): min=5, max=105, avg=25.20, stdev=19.70 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 37], 90.00th=[ 53], 95.00th=[ 70], | 99.00th=[ 99], 99.50th=[ 101], 99.90th=[ 106], 99.95th=[ 106], | 99.99th=[ 106] bw ( KiB/s): min= 95, max= 672, per=24.40%, avg=251.35, stdev=141.58, samples=46 iops : min= 5, max= 42, avg=15.04, stdev= 9.00, samples=46 write: IOPS=17, BW=274KiB/s (281kB/s)(6368KiB/23218msec); 0 zone resets clat (msec): min=8, max=131, avg=34.44, stdev=21.73 lat (msec): min=8, max=131, avg=34.44, stdev=21.73 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 34], | 70.00th=[ 44], 80.00th=[ 54], 90.00th=[ 65], 95.00th=[ 78], | 99.00th=[ 101], 99.50th=[ 110], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 61, max= 702, per=25.10%, avg=272.13, stdev=149.14, samples=46 iops : min= 3, max= 43, avg=16.35, stdev= 9.38, samples=46 lat (msec) : 10=10.03%, 20=33.98%, 50=38.93%, 100=16.41%, 250=0.65% cpu : usr=0.09%, sys=10.87%, ctx=1721, 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=179196: Tue Aug 11 17:44:22 2026 read: IOPS=15, BW=247KiB/s (253kB/s)(5744KiB/23239msec) clat (msec): min=4, max=102, avg=25.49, stdev=19.75 lat (msec): min=4, max=102, avg=25.50, stdev=19.75 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 59], 95.00th=[ 70], | 99.00th=[ 89], 99.50th=[ 101], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 61, max= 702, per=23.66%, avg=243.72, stdev=141.45, samples=46 iops : min= 3, max= 43, avg=14.57, stdev= 8.97, samples=46 write: IOPS=17, BW=282KiB/s (288kB/s)(6544KiB/23239msec); 0 zone resets clat (msec): min=7, max=140, avg=34.18, stdev=21.41 lat (msec): min=7, max=140, avg=34.18, stdev=21.41 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 66], 95.00th=[ 77], | 99.00th=[ 101], 99.50th=[ 108], 99.90th=[ 140], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 95, max= 766, per=25.60%, avg=277.50, stdev=158.89, samples=46 iops : min= 5, max= 47, avg=16.70, stdev= 9.99, samples=46 lat (msec) : 10=9.64%, 20=34.24%, 50=39.45%, 100=15.89%, 250=0.78% cpu : usr=0.05%, sys=10.78%, ctx=1721, 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=179197: Tue Aug 11 17:44:22 2026 read: IOPS=17, BW=274KiB/s (280kB/s)(6256KiB/22850msec) clat (msec): min=3, max=122, avg=25.47, stdev=17.89 lat (msec): min=3, max=122, avg=25.47, stdev=17.89 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 39], 90.00th=[ 50], 95.00th=[ 62], | 99.00th=[ 88], 99.50th=[ 108], 99.90th=[ 124], 99.95th=[ 124], | 99.99th=[ 124] bw ( KiB/s): min= 95, max= 896, per=26.46%, avg=272.53, stdev=166.88, samples=45 iops : min= 5, max= 56, avg=16.38, stdev=10.55, samples=45 write: IOPS=16, BW=264KiB/s (270kB/s)(6032KiB/22850msec); 0 zone resets clat (msec): min=8, max=140, avg=34.09, stdev=21.26 lat (msec): min=8, max=140, avg=34.09, stdev=21.26 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 67], 95.00th=[ 79], | 99.00th=[ 99], 99.50th=[ 120], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 95, max= 672, per=23.82%, avg=258.20, stdev=127.47, samples=45 iops : min= 5, max= 42, avg=15.49, stdev= 8.05, samples=45 lat (msec) : 4=0.13%, 10=7.42%, 20=33.59%, 50=44.01%, 100=14.19% lat (msec) : 250=0.65% cpu : usr=0.10%, sys=11.12%, ctx=1741, 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=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=179198: Tue Aug 11 17:44:22 2026 read: IOPS=16, BW=262KiB/s (268kB/s)(6032KiB/23049msec) clat (msec): min=5, max=114, avg=25.18, stdev=19.41 lat (msec): min=5, max=114, avg=25.18, stdev=19.41 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 22], | 70.00th=[ 29], 80.00th=[ 37], 90.00th=[ 53], 95.00th=[ 68], | 99.00th=[ 101], 99.50th=[ 107], 99.90th=[ 115], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 61, max= 830, per=24.54%, avg=252.73, stdev=145.24, samples=45 iops : min= 3, max= 51, avg=15.13, stdev= 9.16, samples=45 write: IOPS=16, BW=271KiB/s (278kB/s)(6256KiB/23049msec); 0 zone resets clat (msec): min=8, max=115, avg=34.27, stdev=19.67 lat (msec): min=8, max=115, avg=34.27, stdev=19.67 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 42], 80.00th=[ 51], 90.00th=[ 65], 95.00th=[ 74], | 99.00th=[ 90], 99.50th=[ 97], 99.90th=[ 116], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 95, max= 704, per=24.35%, avg=263.93, stdev=124.92, samples=45 iops : min= 5, max= 44, avg=15.84, stdev= 7.94, samples=45 lat (msec) : 10=9.24%, 20=33.98%, 50=40.89%, 100=15.36%, 250=0.52% cpu : usr=0.10%, sys=11.12%, ctx=1743, 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=1031KiB/s (1055kB/s), 247KiB/s-274KiB/s (253kB/s-280kB/s), io=23.4MiB (24.5MB), run=22850-23239msec WRITE: bw=1084KiB/s (1110kB/s), 264KiB/s-282KiB/s (270kB/s-288kB/s), io=24.6MiB (25.8MB), run=22850-23239msec 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=179213: Tue Aug 11 17:44:31 2026 read: IOPS=2, BW=3008KiB/s (3080kB/s)(7168KiB/2383msec) clat (msec): min=112, max=210, avg=150.70, stdev=43.27 lat (msec): min=112, max=210, avg=150.70, stdev=43.27 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 116], | 30.00th=[ 120], 40.00th=[ 120], 50.00th=[ 126], 60.00th=[ 167], | 70.00th=[ 167], 80.00th=[ 207], 90.00th=[ 211], 95.00th=[ 211], | 99.00th=[ 211], 99.50th=[ 211], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 2048, max= 5417, per=63.90%, avg=3778.67, stdev=1686.40, samples=3 iops : min= 2, max= 5, avg= 3.33, stdev= 1.53, samples=3 write: IOPS=2, BW=2149KiB/s (2200kB/s)(5120KiB/2383msec); 0 zone resets clat (msec): min=190, max=430, avg=256.50, stdev=99.40 lat (msec): min=190, max=430, avg=256.57, stdev=99.39 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 226], 60.00th=[ 226], | 70.00th=[ 239], 80.00th=[ 239], 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= 1935, max= 4096, per=32.53%, avg=2693.00, stdev=1216.35, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 250=91.67%, 500=8.33% cpu : usr=0.04%, sys=43.74%, ctx=430, 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=179214: Tue Aug 11 17:44:31 2026 read: IOPS=0, BW=591KiB/s (606kB/s)(2048KiB/3463msec) clat (msec): min=169, max=358, avg=264.04, stdev=134.12 lat (msec): min=169, max=358, avg=264.04, stdev=134.12 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 1822, max= 2048, per=32.72%, avg=1935.00, stdev=159.81, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2957KiB/s (3028kB/s)(10.0MiB/3463msec); 0 zone resets clat (msec): min=44, max=574, avg=287.67, stdev=183.31 lat (msec): min=44, max=574, avg=287.75, stdev=183.31 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 83], | 30.00th=[ 150], 40.00th=[ 178], 50.00th=[ 243], 60.00th=[ 271], | 70.00th=[ 388], 80.00th=[ 418], 90.00th=[ 527], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1935, max= 4096, per=29.41%, avg=2435.00, stdev=929.82, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.10, samples=5 lat (msec) : 50=8.33%, 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67% cpu : usr=0.03%, sys=39.92%, ctx=243, 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=179217: Tue Aug 11 17:44:31 2026 read: IOPS=1, BW=1889KiB/s (1934kB/s)(6144KiB/3253msec) clat (usec): min=477, max=205457, avg=117047.38, stdev=92192.21 lat (usec): min=477, max=205459, avg=117048.44, stdev=92192.70 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 537], | 30.00th=[ 537], 40.00th=[145753], 50.00th=[145753], 60.00th=[170918], | 70.00th=[177210], 80.00th=[177210], 90.00th=[204473], 95.00th=[204473], | 99.00th=[204473], 99.50th=[204473], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 1935, max= 4096, per=42.82%, avg=2531.75, stdev=1044.19, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.26, samples=4 write: IOPS=1, BW=1889KiB/s (1934kB/s)(6144KiB/3253msec); 0 zone resets clat (msec): min=113, max=1045, avg=422.51, stdev=324.09 lat (msec): min=114, max=1045, avg=422.57, stdev=324.09 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 300], 50.00th=[ 300], 60.00th=[ 368], | 70.00th=[ 439], 80.00th=[ 439], 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= 1935, max= 4096, per=34.91%, avg=2890.25, stdev=1068.63, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=41.67%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=37.05%, ctx=298, 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=179218: Tue Aug 11 17:44:31 2026 read: IOPS=1, BW=1846KiB/s (1891kB/s)(5120KiB/2773msec) clat (usec): min=459, max=160633, avg=94541.55, stdev=85945.80 lat (usec): min=460, max=160634, avg=94542.76, stdev=85945.82 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[ 461], | 30.00th=[ 494], 40.00th=[ 494], 50.00th=[152044], 60.00th=[152044], | 70.00th=[160433], 80.00th=[160433], 90.00th=[160433], 95.00th=[160433], | 99.00th=[160433], 99.50th=[160433], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 2048, max= 6144, per=69.27%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2585KiB/s (2647kB/s)(7168KiB/2773msec); 0 zone resets clat (msec): min=159, max=539, avg=324.99, stdev=138.39 lat (msec): min=159, max=539, avg=325.06, stdev=138.38 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 194], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 347], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 439], 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= 1831, max= 4096, per=29.93%, avg=2477.50, stdev=1082.63, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (usec) : 500=16.67% lat (msec) : 250=50.00%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=41.16%, ctx=533, 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=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=5914KiB/s (6056kB/s), 591KiB/s-3008KiB/s (606kB/s-3080kB/s), io=20.0MiB (20.0MB), run=2383-3463msec WRITE: bw=8280KiB/s (8478kB/s), 1889KiB/s-2957KiB/s (1934kB/s-3028kB/s), io=28.0MiB (29.4MB), run=2383-3463msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179212: Tue Aug 11 17:44:31 2026 read: IOPS=2, BW=2650KiB/s (2714kB/s)(7168KiB/2705msec) clat (msec): min=58, max=670, avg=205.77, stdev=213.40 lat (msec): min=58, max=670, avg=205.77, stdev=213.40 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 79], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 127], 60.00th=[ 197], | 70.00th=[ 197], 80.00th=[ 218], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 1899, max= 4087, per=48.47%, avg=2895.75, stdev=1089.04, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 write: IOPS=1, BW=1893KiB/s (1938kB/s)(5120KiB/2705msec); 0 zone resets clat (msec): min=99, max=456, avg=237.81, stdev=137.80 lat (msec): min=99, max=456, avg=237.87, stdev=137.80 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 101], 10.00th=[ 101], 20.00th=[ 101], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 190], 60.00th=[ 190], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 1899, max= 6144, per=40.20%, avg=3362.00, stdev=2410.36, samples=3 iops : min= 1, max= 6, avg= 2.67, stdev= 2.89, samples=3 lat (msec) : 100=33.33%, 250=41.67%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=15.27%, ctx=122, 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=179215: Tue Aug 11 17:44:31 2026 read: IOPS=0, BW=600KiB/s (614kB/s)(2048KiB/3413msec) clat (msec): min=333, max=359, avg=346.57, stdev=18.93 lat (msec): min=333, max=359, avg=346.57, stdev=18.93 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 1747, max= 2048, per=31.76%, avg=1897.50, stdev=212.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=3000KiB/s (3072kB/s)(10.0MiB/3413msec); 0 zone resets clat (msec): min=69, max=434, avg=270.60, stdev=132.28 lat (msec): min=69, max=434, avg=270.67, stdev=132.28 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 87], | 30.00th=[ 180], 40.00th=[ 199], 50.00th=[ 279], 60.00th=[ 321], | 70.00th=[ 330], 80.00th=[ 384], 90.00th=[ 426], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 2043, max= 5699, per=41.51%, avg=3471.50, stdev=1771.88, samples=4 iops : min= 1, max= 5, avg= 3.00, stdev= 1.83, samples=4 lat (msec) : 100=16.67%, 250=16.67%, 500=66.67% cpu : usr=0.00%, sys=17.20%, ctx=119, 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=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=179216: Tue Aug 11 17:44:31 2026 read: IOPS=1, BW=1792KiB/s (1835kB/s)(6144KiB/3428msec) clat (msec): min=52, max=243, avg=112.20, stdev=71.48 lat (msec): min=52, max=243, avg=112.20, stdev=71.48 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 65], | 30.00th=[ 65], 40.00th=[ 66], 50.00th=[ 66], 60.00th=[ 117], | 70.00th=[ 130], 80.00th=[ 130], 90.00th=[ 245], 95.00th=[ 245], | 99.00th=[ 245], 99.50th=[ 245], 99.90th=[ 245], 99.95th=[ 245], | 99.99th=[ 245] bw ( KiB/s): min= 2043, max= 6144, per=57.11%, avg=3411.67, stdev=2366.27, samples=3 iops : min= 1, max= 6, avg= 3.00, stdev= 2.65, samples=3 write: IOPS=1, BW=1792KiB/s (1835kB/s)(6144KiB/3428msec); 0 zone resets clat (msec): min=170, max=1128, avg=454.13, stdev=342.17 lat (msec): min=171, max=1128, avg=454.19, stdev=342.18 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 347], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 1787, max= 2048, per=23.49%, avg=1965.00, stdev=118.22, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=17.68%, ctx=194, 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=179219: Tue Aug 11 17:44:31 2026 read: IOPS=1, BW=1511KiB/s (1547kB/s)(5120KiB/3389msec) clat (msec): min=92, max=420, avg=271.82, stdev=163.66 lat (msec): min=92, max=420, avg=271.82, stdev=163.66 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 4096, max= 4096, per=68.56%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2115KiB/s (2166kB/s)(7168KiB/3389msec); 0 zone resets clat (msec): min=57, max=968, avg=285.47, stdev=319.17 lat (msec): min=57, max=968, avg=285.54, stdev=319.17 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 92], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 142], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 338], 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= 1815, max= 4087, per=29.88%, avg=2499.50, stdev=1064.02, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 100=33.33%, 250=16.67%, 500=41.67%, 1000=8.33% cpu : usr=0.03%, sys=15.61%, ctx=147, 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=5974KiB/s (6118kB/s), 600KiB/s-2650KiB/s (614kB/s-2714kB/s), io=20.0MiB (20.0MB), run=2705-3428msec WRITE: bw=8364KiB/s (8565kB/s), 1792KiB/s-3000KiB/s (1835kB/s-3072kB/s), io=28.0MiB (29.4MB), run=2705-3428msec 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=179229: Tue Aug 11 17:44:40 2026 read: IOPS=1, BW=4538KiB/s (4647kB/s)(12.0MiB/2708msec) clat (msec): min=362, max=1715, avg=894.84, stdev=720.83 lat (msec): min=362, max=1715, avg=894.84, stdev=720.83 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 6059, max= 8126, per=100.00%, avg=7092.50, stdev=1461.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=31.88%, ctx=2406, 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=179230: Tue Aug 11 17:44:40 2026 read: IOPS=0, BW=2753KiB/s (2819kB/s)(4096KiB/1488msec) clat (nsec): min=402511k, max=402511k, avg=402511417.00, stdev= 0.00 lat (nsec): min=402515k, max=402515k, avg=402514505.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 5760, max= 5760, per=95.21%, avg=5760.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5505KiB/s (5638kB/s)(8192KiB/1488msec); 0 zone resets clat (msec): min=479, max=587, avg=533.60, stdev=76.48 lat (msec): min=479, max=587, avg=533.94, stdev=76.40 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 8126, max= 8126, per=75.79%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.07%, sys=19.64%, ctx=934, 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=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=179231: Tue Aug 11 17:44:40 2026 write: IOPS=0, BW=4021KiB/s (4117kB/s)(12.0MiB/3056msec); 0 zone resets clat (msec): min=392, max=1685, avg=1012.17, stdev=648.47 lat (msec): min=392, max=1685, avg=1012.39, stdev=648.52 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1687], 80.00th=[ 1687], 90.00th=[ 1687], 95.00th=[ 1687], | 99.00th=[ 1687], 99.50th=[ 1687], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 8126, max= 8192, per=76.10%, avg=8159.00, stdev=46.67, 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=8.94%, ctx=60, 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=179232: Tue Aug 11 17:44:40 2026 write: IOPS=1, BW=4361KiB/s (4465kB/s)(12.0MiB/2818msec); 0 zone resets clat (msec): min=585, max=1559, avg=931.16, stdev=545.18 lat (msec): min=585, max=1560, avg=931.52, stdev=545.24 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 5979, max= 8192, per=66.08%, avg=7085.50, stdev=1564.83, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.07%, sys=10.19%, 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=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=6050KiB/s (6195kB/s), 2753KiB/s-4538KiB/s (2819kB/s-4647kB/s), io=16.0MiB (16.8MB), run=1488-2708msec WRITE: bw=10.5MiB/s (10.0MB/s), 4021KiB/s-5505KiB/s (4117kB/s-5638kB/s), io=32.0MiB (33.6MB), run=1488-3056msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179224: Tue Aug 11 17:44:41 2026 read: IOPS=1, BW=4208KiB/s (4309kB/s)(12.0MiB/2920msec) clat (msec): min=466, max=1697, avg=924.32, stdev=673.10 lat (msec): min=466, max=1697, avg=924.32, stdev=673.10 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 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= 5610, max= 8192, per=100.00%, avg=6901.00, stdev=1825.75, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.38%, ctx=70, 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=179226: Tue Aug 11 17:44:41 2026 read: IOPS=0, BW=1278KiB/s (1309kB/s)(4096KiB/3205msec) clat (nsec): min=644214k, max=644214k, avg=644213673.00, stdev= 0.00 lat (nsec): min=644215k, max=644215k, avg=644214523.00, 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= 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=2556KiB/s (2617kB/s)(8192KiB/3205msec); 0 zone resets clat (msec): min=151, max=2255, avg=1203.84, stdev=1487.79 lat (msec): min=152, max=2256, avg=1204.22, stdev=1487.87 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=[ 2265], | 70.00th=[ 2265], 80.00th=[ 2265], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=9.14%, ctx=174, 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=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=179227: Tue Aug 11 17:44:41 2026 write: IOPS=0, BW=3744KiB/s (3834kB/s)(12.0MiB/3282msec); 0 zone resets clat (msec): min=215, max=1588, avg=1046.99, stdev=731.18 lat (msec): min=215, max=1588, avg=1047.26, stdev=731.20 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1586], 80.00th=[ 1586], 90.00th=[ 1586], 95.00th=[ 1586], | 99.00th=[ 1586], 99.50th=[ 1586], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.74%, ctx=61, 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=179228: Tue Aug 11 17:44:41 2026 write: IOPS=1, BW=4327KiB/s (4431kB/s)(12.0MiB/2840msec); 0 zone resets clat (msec): min=292, max=1988, avg=900.15, stdev=945.05 lat (msec): min=293, max=1989, avg=900.43, stdev=944.94 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 5618, max= 8192, per=69.16%, avg=6905.00, stdev=1820.09, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=10.99%, ctx=64, 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=5112KiB/s (5235kB/s), 1278KiB/s-4208KiB/s (1309kB/s-4309kB/s), io=16.0MiB (16.8MB), run=2920-3205msec WRITE: bw=9984KiB/s (10.2MB/s), 2556KiB/s-4327KiB/s (2617kB/s-4431kB/s), io=32.0MiB (33.6MB), run=2840-3282msec