== sanity test 398b: DIO and buffer IO race ============== 14:48:38 (1767728918) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.5183 s, 20.0 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=189162: Tue Jan 6 14:49:31 2026 read: IOPS=34, BW=137KiB/s (140kB/s)(5992KiB/43710msec) clat (usec): min=105, max=916962, avg=16079.31, stdev=24652.43 lat (usec): min=105, max=916963, avg=16079.84, stdev=24652.44 clat percentiles (usec): | 1.00th=[ 306], 5.00th=[ 6063], 10.00th=[ 7767], 20.00th=[ 9110], | 30.00th=[ 10683], 40.00th=[ 12256], 50.00th=[ 14353], 60.00th=[ 16319], | 70.00th=[ 18220], 80.00th=[ 20841], 90.00th=[ 24773], 95.00th=[ 29230], | 99.00th=[ 44303], 99.50th=[ 54264], 99.90th=[ 76022], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 6, max= 192, per=25.59%, avg=138.69, stdev=27.92, samples=85 iops : min= 1, max= 48, avg=34.33, stdev= 7.03, samples=85 write: IOPS=36, BW=144KiB/s (147kB/s)(6296KiB/43710msec); 0 zone resets clat (usec): min=638, max=52733, avg=12283.46, stdev=9638.05 lat (usec): min=638, max=52824, avg=12284.14, stdev=9638.32 clat percentiles (usec): | 1.00th=[ 906], 5.00th=[ 1893], 10.00th=[ 2442], 20.00th=[ 2999], | 30.00th=[ 4752], 40.00th=[ 8225], 50.00th=[10290], 60.00th=[12780], | 70.00th=[15664], 80.00th=[19792], 90.00th=[26084], 95.00th=[30802], | 99.00th=[41157], 99.50th=[44303], 99.90th=[52691], 99.95th=[52691], | 99.99th=[52691] bw ( KiB/s): min= 80, max= 223, per=25.90%, avg=146.85, stdev=31.34, samples=84 iops : min= 20, max= 55, avg=36.37, stdev= 7.91, samples=84 lat (usec) : 250=0.20%, 500=1.17%, 750=0.20%, 1000=0.78% lat (msec) : 2=2.05%, 4=11.23%, 10=21.58%, 20=41.93%, 50=20.48% lat (msec) : 100=0.36%, 1000=0.03% cpu : usr=0.11%, sys=24.64%, ctx=8387, 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=189163: Tue Jan 6 14:49:31 2026 read: IOPS=33, BW=135KiB/s (138kB/s)(5940KiB/43974msec) clat (usec): min=191, max=68946, avg=15578.04, stdev=7781.87 lat (usec): min=192, max=68947, avg=15580.71, stdev=7780.99 clat percentiles (usec): | 1.00th=[ 375], 5.00th=[ 6849], 10.00th=[ 7898], 20.00th=[ 9372], | 30.00th=[10814], 40.00th=[12256], 50.00th=[14222], 60.00th=[16319], | 70.00th=[18482], 80.00th=[20579], 90.00th=[25297], 95.00th=[29230], | 99.00th=[43254], 99.50th=[47449], 99.90th=[63177], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 6, max= 192, per=25.15%, avg=136.31, stdev=29.96, samples=86 iops : min= 1, max= 48, avg=33.73, stdev= 7.49, samples=86 write: IOPS=36, BW=144KiB/s (148kB/s)(6348KiB/43974msec); 0 zone resets clat (usec): min=684, max=919142, avg=12949.26, stdev=24781.71 lat (usec): min=685, max=919144, avg=12950.86, stdev=24781.95 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 2147], 10.00th=[ 2540], 20.00th=[ 3097], | 30.00th=[ 4621], 40.00th=[ 8291], 50.00th=[ 10421], 60.00th=[ 12518], | 70.00th=[ 15664], 80.00th=[ 20055], 90.00th=[ 26084], 95.00th=[ 31065], | 99.00th=[ 44827], 99.50th=[ 50070], 99.90th=[ 70779], 99.95th=[918553], | 99.99th=[918553] bw ( KiB/s): min= 71, max= 239, per=25.87%, avg=146.69, stdev=33.21, samples=85 iops : min= 17, max= 59, avg=36.33, stdev= 8.30, samples=85 lat (usec) : 250=0.07%, 500=0.72%, 750=0.20%, 1000=0.59% lat (msec) : 2=1.43%, 4=12.04%, 10=21.22%, 20=42.25%, 50=21.06% lat (msec) : 100=0.39%, 1000=0.03% cpu : usr=0.10%, sys=24.72%, ctx=8626, 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=189164: Tue Jan 6 14:49:31 2026 read: IOPS=34, BW=139KiB/s (142kB/s)(6028KiB/43327msec) clat (usec): min=105, max=76824, avg=15134.91, stdev=8086.39 lat (usec): min=105, max=76825, avg=15135.49, stdev=8086.40 clat percentiles (usec): | 1.00th=[ 334], 5.00th=[ 5932], 10.00th=[ 7635], 20.00th=[ 8979], | 30.00th=[10290], 40.00th=[11863], 50.00th=[13698], 60.00th=[15664], | 70.00th=[17957], 80.00th=[20317], 90.00th=[24511], 95.00th=[28967], | 99.00th=[43779], 99.50th=[47973], 99.90th=[64226], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 71, max= 223, per=26.30%, avg=142.57, stdev=29.43, samples=84 iops : min= 17, max= 55, avg=35.30, stdev= 7.42, samples=84 write: IOPS=36, BW=144KiB/s (148kB/s)(6260KiB/43327msec); 0 zone resets clat (usec): min=624, max=941976, avg=12926.78, stdev=25436.36 lat (usec): min=625, max=941977, avg=12927.45, stdev=25436.38 clat percentiles (usec): | 1.00th=[ 766], 5.00th=[ 2008], 10.00th=[ 2409], 20.00th=[ 2966], | 30.00th=[ 4293], 40.00th=[ 8455], 50.00th=[ 10683], 60.00th=[ 12911], | 70.00th=[ 15664], 80.00th=[ 20055], 90.00th=[ 25560], 95.00th=[ 31851], | 99.00th=[ 43779], 99.50th=[ 45876], 99.90th=[ 56361], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 72, max= 247, per=26.10%, avg=147.99, stdev=36.30, samples=84 iops : min= 18, max= 61, avg=36.65, stdev= 9.06, samples=84 lat (usec) : 250=0.26%, 500=1.27%, 750=0.42%, 1000=0.39% lat (msec) : 2=1.73%, 4=12.08%, 10=21.26%, 20=41.57%, 50=20.67% lat (msec) : 100=0.33%, 1000=0.03% cpu : usr=0.10%, sys=24.69%, ctx=8316, 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=189165: Tue Jan 6 14:49:31 2026 read: IOPS=34, BW=137KiB/s (140kB/s)(6052KiB/44274msec) clat (usec): min=78, max=67780, avg=15418.98, stdev=8234.42 lat (usec): min=78, max=67781, avg=15419.69, stdev=8234.34 clat percentiles (usec): | 1.00th=[ 306], 5.00th=[ 6259], 10.00th=[ 7570], 20.00th=[ 9241], | 30.00th=[10552], 40.00th=[11863], 50.00th=[13960], 60.00th=[16057], | 70.00th=[18482], 80.00th=[20841], 90.00th=[25035], 95.00th=[30016], | 99.00th=[45876], 99.50th=[51643], 99.90th=[66323], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 79, max= 232, per=25.85%, avg=140.08, stdev=28.47, samples=86 iops : min= 19, max= 58, avg=34.67, stdev= 7.15, samples=86 write: IOPS=35, BW=141KiB/s (144kB/s)(6236KiB/44274msec); 0 zone resets clat (usec): min=622, max=941451, avg=13252.94, stdev=25335.03 lat (usec): min=622, max=941452, avg=13254.57, stdev=25334.90 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 2212], 10.00th=[ 2573], 20.00th=[ 3163], | 30.00th=[ 5866], 40.00th=[ 9110], 50.00th=[ 10945], 60.00th=[ 12911], | 70.00th=[ 16188], 80.00th=[ 20579], 90.00th=[ 26084], 95.00th=[ 30278], | 99.00th=[ 40633], 99.50th=[ 47973], 99.90th=[ 58459], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 72, max= 240, per=25.41%, avg=144.06, stdev=32.93, samples=86 iops : min= 18, max= 60, avg=35.67, stdev= 8.31, samples=86 lat (usec) : 100=0.03%, 250=0.23%, 500=1.07%, 750=0.13%, 1000=0.39% lat (msec) : 2=1.50%, 4=10.55%, 10=21.29%, 20=42.81%, 50=21.55% lat (msec) : 100=0.42%, 1000=0.03% cpu : usr=0.12%, sys=24.68%, ctx=8713, 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=542KiB/s (555kB/s), 135KiB/s-139KiB/s (138kB/s-142kB/s), io=23.4MiB (24.6MB), run=43327-44274msec WRITE: bw=568KiB/s (581kB/s), 141KiB/s-144KiB/s (144kB/s-148kB/s), io=24.6MiB (25.7MB), run=43327-44274msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189167: Tue Jan 6 14:49:38 2026 read: IOPS=29, BW=117KiB/s (120kB/s)(5992KiB/51243msec) clat (msec): min=2, max=925, avg=14.82, stdev=26.05 lat (msec): min=2, max=925, avg=14.82, stdev=26.05 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 32], 95.00th=[ 38], | 99.00th=[ 52], 99.50th=[ 58], 99.90th=[ 90], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 40, max= 381, per=25.62%, avg=119.38, stdev=76.17, samples=100 iops : min= 10, max= 95, avg=29.53, stdev=19.17, samples=100 write: IOPS=30, BW=123KiB/s (126kB/s)(6296KiB/51243msec); 0 zone resets clat (usec): min=4106, max=82341, avg=18302.95, stdev=12346.07 lat (usec): min=4107, max=82341, avg=18303.74, stdev=12346.06 clat percentiles (usec): | 1.00th=[ 4948], 5.00th=[ 5932], 10.00th=[ 6587], 20.00th=[ 7767], | 30.00th=[ 9503], 40.00th=[11207], 50.00th=[13829], 60.00th=[18482], | 70.00th=[22938], 80.00th=[28443], 90.00th=[35390], 95.00th=[41681], | 99.00th=[57934], 99.50th=[65274], 99.90th=[77071], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 31, max= 344, per=25.69%, avg=125.39, stdev=76.19, samples=100 iops : min= 7, max= 86, avg=31.03, stdev=19.15, samples=100 lat (msec) : 4=2.57%, 10=37.40%, 20=30.79%, 50=27.51%, 100=1.69% lat (msec) : 1000=0.03% cpu : usr=0.11%, sys=11.26%, ctx=5232, 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=189168: Tue Jan 6 14:49:38 2026 read: IOPS=29, BW=116KiB/s (119kB/s)(5940KiB/51030msec) clat (msec): min=2, max=933, avg=14.41, stdev=26.16 lat (msec): min=2, max=933, avg=14.41, stdev=26.16 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 21], 90.00th=[ 30], 95.00th=[ 37], | 99.00th=[ 54], 99.50th=[ 61], 99.90th=[ 68], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 39, max= 384, per=25.40%, avg=118.34, stdev=77.56, samples=99 iops : min= 9, max= 96, avg=29.26, stdev=19.49, samples=99 write: IOPS=31, BW=124KiB/s (127kB/s)(6348KiB/51030msec); 0 zone resets clat (usec): min=4172, max=84435, avg=18530.66, stdev=12556.35 lat (usec): min=4173, max=84436, avg=18531.44, stdev=12556.33 clat percentiles (usec): | 1.00th=[ 5014], 5.00th=[ 5669], 10.00th=[ 6259], 20.00th=[ 7570], | 30.00th=[ 9503], 40.00th=[11731], 50.00th=[15008], 60.00th=[18744], | 70.00th=[23200], 80.00th=[27919], 90.00th=[35390], 95.00th=[42206], | 99.00th=[61604], 99.50th=[71828], 99.90th=[83362], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 47, max= 381, per=25.81%, avg=125.93, stdev=74.14, samples=99 iops : min= 11, max= 95, avg=31.16, stdev=18.65, samples=99 lat (msec) : 4=2.15%, 10=38.12%, 20=30.60%, 50=27.25%, 100=1.86% lat (msec) : 1000=0.03% cpu : usr=0.09%, sys=11.31%, ctx=5261, 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=189169: Tue Jan 6 14:49:38 2026 read: IOPS=29, BW=118KiB/s (120kB/s)(6028KiB/51296msec) clat (usec): min=2298, max=72497, avg=14383.15, stdev=11473.75 lat (usec): min=2298, max=72498, avg=14383.81, stdev=11473.79 clat percentiles (usec): | 1.00th=[ 3163], 5.00th=[ 3982], 10.00th=[ 4490], 20.00th=[ 5407], | 30.00th=[ 6783], 40.00th=[ 8586], 50.00th=[10290], 60.00th=[12387], | 70.00th=[15926], 80.00th=[22414], 90.00th=[31851], 95.00th=[38011], | 99.00th=[55313], 99.50th=[60556], 99.90th=[66323], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 39, max= 408, per=25.67%, avg=119.63, stdev=77.01, samples=100 iops : min= 9, max= 102, avg=29.59, stdev=19.37, samples=100 write: IOPS=30, BW=122KiB/s (125kB/s)(6260KiB/51296msec); 0 zone resets clat (msec): min=3, max=938, avg=18.79, stdev=26.33 lat (msec): min=3, max=938, avg=18.79, stdev=26.33 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 36], 95.00th=[ 42], | 99.00th=[ 61], 99.50th=[ 70], 99.90th=[ 81], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 48, max= 368, per=25.47%, avg=124.27, stdev=77.38, samples=100 iops : min= 12, max= 92, avg=30.75, stdev=19.45, samples=100 lat (msec) : 4=2.60%, 10=38.22%, 20=29.82%, 50=27.57%, 100=1.76% lat (msec) : 1000=0.03% cpu : usr=0.10%, sys=11.22%, ctx=5217, 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=189170: Tue Jan 6 14:49:38 2026 read: IOPS=29, BW=118KiB/s (120kB/s)(6052KiB/51438msec) clat (usec): min=2056, max=70224, avg=14184.57, stdev=11505.63 lat (usec): min=2057, max=70224, avg=14185.24, stdev=11505.58 clat percentiles (usec): | 1.00th=[ 2737], 5.00th=[ 3884], 10.00th=[ 4490], 20.00th=[ 5276], | 30.00th=[ 6587], 40.00th=[ 8455], 50.00th=[10028], 60.00th=[12256], | 70.00th=[15795], 80.00th=[21627], 90.00th=[31589], 95.00th=[38011], | 99.00th=[54789], 99.50th=[63701], 99.90th=[66847], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 47, max= 384, per=25.40%, avg=118.35, stdev=76.31, samples=100 iops : min= 11, max= 96, avg=29.27, stdev=19.20, samples=100 write: IOPS=30, BW=121KiB/s (124kB/s)(6236KiB/51438msec); 0 zone resets clat (msec): min=3, max=937, avg=19.09, stdev=26.68 lat (msec): min=3, max=937, avg=19.09, stdev=26.68 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 28], 90.00th=[ 36], 95.00th=[ 44], | 99.00th=[ 64], 99.50th=[ 71], 99.90th=[ 85], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 55, max= 368, per=25.09%, avg=122.43, stdev=77.11, samples=100 iops : min= 13, max= 92, avg=30.29, stdev=19.40, samples=100 lat (msec) : 4=3.19%, 10=38.74%, 20=28.39%, 50=27.34%, 100=2.31% lat (msec) : 1000=0.03% cpu : usr=0.10%, sys=11.05%, ctx=5162, 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=467KiB/s (478kB/s), 116KiB/s-118KiB/s (119kB/s-120kB/s), io=23.4MiB (24.6MB), run=51030-51438msec WRITE: bw=489KiB/s (500kB/s), 121KiB/s-124KiB/s (124kB/s-127kB/s), io=24.6MiB (25.7MB), run=51030-51438msec 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=189189: Tue Jan 6 14:49:56 2026 read: IOPS=30, BW=490KiB/s (502kB/s)(5920KiB/12081msec) clat (usec): min=204, max=45115, avg=16191.56, stdev=7742.68 lat (usec): min=205, max=45116, avg=16192.13, stdev=7742.68 clat percentiles (usec): | 1.00th=[ 297], 5.00th=[ 465], 10.00th=[ 8160], 20.00th=[10683], | 30.00th=[11863], 40.00th=[14091], 50.00th=[15926], 60.00th=[17433], | 70.00th=[19530], 80.00th=[22152], 90.00th=[25297], 95.00th=[28443], | 99.00th=[40109], 99.50th=[43254], 99.90th=[45351], 99.95th=[45351], | 99.99th=[45351] bw ( KiB/s): min= 351, max= 704, per=25.04%, avg=484.52, stdev=82.23, samples=23 iops : min= 21, max= 44, avg=29.74, stdev= 5.17, samples=23 write: IOPS=32, BW=527KiB/s (540kB/s)(6368KiB/12081msec); 0 zone resets clat (usec): min=881, max=56912, avg=15253.27, stdev=10583.45 lat (usec): min=882, max=56914, avg=15254.81, stdev=10583.39 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 3556], 10.00th=[ 4080], 20.00th=[ 5407], | 30.00th=[ 8586], 40.00th=[10814], 50.00th=[13173], 60.00th=[15008], | 70.00th=[18744], 80.00th=[22676], 90.00th=[30802], 95.00th=[36439], | 99.00th=[52167], 99.50th=[56361], 99.90th=[56886], 99.95th=[56886], | 99.99th=[56886] bw ( KiB/s): min= 224, max= 795, per=26.01%, avg=529.61, stdev=123.69, samples=23 iops : min= 14, max= 49, avg=32.57, stdev= 7.73, samples=23 lat (usec) : 250=0.26%, 500=2.47%, 750=0.13%, 1000=0.13% lat (msec) : 2=0.91%, 4=3.39%, 10=19.27%, 20=46.48%, 50=26.30% lat (msec) : 100=0.65% cpu : usr=0.11%, sys=28.08%, ctx=2702, 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=189190: Tue Jan 6 14:49:56 2026 read: IOPS=29, BW=464KiB/s (475kB/s)(5744KiB/12373msec) clat (usec): min=243, max=58518, avg=17617.24, stdev=9468.72 lat (usec): min=244, max=58519, avg=17618.03, stdev=9468.50 clat percentiles (usec): | 1.00th=[ 314], 5.00th=[ 486], 10.00th=[ 8979], 20.00th=[10552], | 30.00th=[12125], 40.00th=[14222], 50.00th=[16319], 60.00th=[18482], | 70.00th=[20579], 80.00th=[23987], 90.00th=[28443], 95.00th=[35390], | 99.00th=[49546], 99.50th=[55837], 99.90th=[58459], 99.95th=[58459], | 99.99th=[58459] bw ( KiB/s): min= 288, max= 640, per=23.84%, avg=461.21, stdev=87.51, samples=24 iops : min= 18, max= 40, avg=28.25, stdev= 5.43, samples=24 write: IOPS=33, BW=529KiB/s (542kB/s)(6544KiB/12373msec); 0 zone resets clat (usec): min=1011, max=74543, avg=14678.09, stdev=10388.12 lat (usec): min=1011, max=74544, avg=14679.17, stdev=10388.06 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 3589], 10.00th=[ 4228], 20.00th=[ 5211], | 30.00th=[ 7767], 40.00th=[10028], 50.00th=[12125], 60.00th=[14877], | 70.00th=[17433], 80.00th=[22152], 90.00th=[29754], 95.00th=[35390], | 99.00th=[43779], 99.50th=[53216], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 319, max= 864, per=25.61%, avg=521.33, stdev=130.78, samples=24 iops : min= 19, max= 54, avg=32.04, stdev= 8.33, samples=24 lat (usec) : 250=0.13%, 500=2.21%, 1000=0.13% lat (msec) : 2=0.91%, 4=3.12%, 10=22.92%, 20=41.93%, 50=27.86% lat (msec) : 100=0.78% cpu : usr=0.13%, sys=27.55%, ctx=2695, 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=189191: Tue Jan 6 14:49:56 2026 read: IOPS=31, BW=511KiB/s (524kB/s)(6256KiB/12237msec) clat (usec): min=125, max=72796, avg=16874.76, stdev=8876.63 lat (usec): min=125, max=72797, avg=16876.05, stdev=8875.39 clat percentiles (usec): | 1.00th=[ 262], 5.00th=[ 1090], 10.00th=[ 8848], 20.00th=[10814], | 30.00th=[12387], 40.00th=[14091], 50.00th=[15664], 60.00th=[17171], | 70.00th=[19268], 80.00th=[22938], 90.00th=[27395], 95.00th=[32113], | 99.00th=[46924], 99.50th=[57934], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 378, max= 736, per=26.55%, avg=513.67, stdev=100.68, samples=24 iops : min= 23, max= 46, avg=31.54, stdev= 6.45, samples=24 write: IOPS=30, BW=493KiB/s (505kB/s)(6032KiB/12237msec); 0 zone resets clat (usec): min=977, max=55506, avg=14809.09, stdev=9941.85 lat (usec): min=978, max=55507, avg=14810.46, stdev=9941.61 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 3654], 10.00th=[ 4293], 20.00th=[ 5342], | 30.00th=[ 8848], 40.00th=[10814], 50.00th=[12256], 60.00th=[15401], | 70.00th=[18220], 80.00th=[21627], 90.00th=[29230], 95.00th=[35390], | 99.00th=[45876], 99.50th=[51119], 99.90th=[55313], 99.95th=[55313], | 99.99th=[55313] bw ( KiB/s): min= 287, max= 699, per=23.85%, avg=485.63, stdev=122.66, samples=24 iops : min= 17, max= 43, avg=29.79, stdev= 7.64, samples=24 lat (usec) : 250=0.26%, 500=2.21%, 1000=0.13% lat (msec) : 2=0.65%, 4=3.12%, 10=19.27%, 20=47.53%, 50=26.17% lat (msec) : 100=0.65% cpu : usr=0.11%, sys=27.74%, ctx=2758, 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=189192: Tue Jan 6 14:49:56 2026 read: IOPS=31, BW=503KiB/s (515kB/s)(6032KiB/11994msec) clat (usec): min=98, max=57230, avg=17092.42, stdev=8958.05 lat (usec): min=99, max=57230, avg=17093.01, stdev=8958.03 clat percentiles (usec): | 1.00th=[ 262], 5.00th=[ 400], 10.00th=[ 8094], 20.00th=[10421], | 30.00th=[12518], 40.00th=[14353], 50.00th=[16188], 60.00th=[17957], | 70.00th=[20317], 80.00th=[23462], 90.00th=[28443], 95.00th=[32900], | 99.00th=[45876], 99.50th=[52691], 99.90th=[57410], 99.95th=[57410], | 99.99th=[57410] bw ( KiB/s): min= 320, max= 576, per=25.79%, avg=499.13, stdev=68.00, samples=23 iops : min= 20, max= 36, avg=30.65, stdev= 4.27, samples=23 write: IOPS=32, BW=522KiB/s (534kB/s)(6256KiB/11994msec); 0 zone resets clat (usec): min=1225, max=65922, avg=14102.06, stdev=9963.71 lat (usec): min=1226, max=65924, avg=14105.99, stdev=9960.65 clat percentiles (usec): | 1.00th=[ 2073], 5.00th=[ 3589], 10.00th=[ 4228], 20.00th=[ 5080], | 30.00th=[ 7767], 40.00th=[10159], 50.00th=[11994], 60.00th=[13960], | 70.00th=[16712], 80.00th=[20841], 90.00th=[27657], 95.00th=[33162], | 99.00th=[45351], 99.50th=[64226], 99.90th=[65799], 99.95th=[65799], | 99.99th=[65799] bw ( KiB/s): min= 347, max= 858, per=25.72%, avg=523.57, stdev=121.22, samples=23 iops : min= 21, max= 53, avg=32.17, stdev= 7.64, samples=23 lat (usec) : 100=0.13%, 250=0.26%, 500=2.60%, 750=0.13% lat (msec) : 2=0.52%, 4=3.91%, 10=21.22%, 20=44.27%, 50=26.30% lat (msec) : 100=0.65% cpu : usr=0.14%, sys=27.57%, ctx=2766, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1936KiB/s (1982kB/s), 464KiB/s-511KiB/s (475kB/s-524kB/s), io=23.4MiB (24.5MB), run=11994-12373msec WRITE: bw=2037KiB/s (2086kB/s), 493KiB/s-529KiB/s (505kB/s-542kB/s), io=24.6MiB (25.8MB), run=11994-12373msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189194: Tue Jan 6 14:49:57 2026 read: IOPS=27, BW=434KiB/s (444kB/s)(5920KiB/13648msec) clat (usec): min=2817, max=58063, avg=15379.38, stdev=11787.94 lat (usec): min=2817, max=58063, avg=15379.94, stdev=11787.92 clat percentiles (usec): | 1.00th=[ 3490], 5.00th=[ 4490], 10.00th=[ 5080], 20.00th=[ 5997], | 30.00th=[ 7701], 40.00th=[ 9765], 50.00th=[11338], 60.00th=[13304], | 70.00th=[15533], 80.00th=[23987], 90.00th=[33817], 95.00th=[41681], | 99.00th=[53216], 99.50th=[54264], 99.90th=[57934], 99.95th=[57934], | 99.99th=[57934] bw ( KiB/s): min= 159, max= 1088, per=22.74%, avg=398.15, stdev=219.63, samples=26 iops : min= 9, max= 68, avg=24.35, stdev=13.84, samples=26 write: IOPS=29, BW=467KiB/s (478kB/s)(6368KiB/13648msec); 0 zone resets clat (usec): min=4132, max=75025, avg=19825.66, stdev=13642.48 lat (usec): min=4133, max=75025, avg=19826.98, stdev=13642.52 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 5669], 10.00th=[ 6456], 20.00th=[ 7701], | 30.00th=[10290], 40.00th=[12780], 50.00th=[15926], 60.00th=[19530], | 70.00th=[23462], 80.00th=[31065], 90.00th=[39060], 95.00th=[47449], | 99.00th=[64750], 99.50th=[74974], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 223, max= 1344, per=23.61%, avg=434.88, stdev=231.35, samples=26 iops : min= 13, max= 84, avg=26.65, stdev=14.62, samples=26 lat (msec) : 4=1.43%, 10=33.59%, 20=34.11%, 50=28.26%, 100=2.60% cpu : usr=0.09%, sys=12.33%, ctx=1400, 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=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=189195: Tue Jan 6 14:49:57 2026 read: IOPS=26, BW=422KiB/s (432kB/s)(5744KiB/13624msec) clat (usec): min=3233, max=66142, avg=15548.08, stdev=11815.54 lat (usec): min=3234, max=66143, avg=15548.63, stdev=11815.54 clat percentiles (usec): | 1.00th=[ 3949], 5.00th=[ 4817], 10.00th=[ 5080], 20.00th=[ 6194], | 30.00th=[ 7963], 40.00th=[ 9503], 50.00th=[11469], 60.00th=[13566], | 70.00th=[16188], 80.00th=[22938], 90.00th=[35390], 95.00th=[40633], | 99.00th=[51119], 99.50th=[58983], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 223, max= 960, per=22.60%, avg=395.73, stdev=191.15, samples=26 iops : min= 13, max= 60, avg=24.19, stdev=12.08, samples=26 write: IOPS=30, BW=480KiB/s (492kB/s)(6544KiB/13624msec); 0 zone resets clat (usec): min=4607, max=87676, avg=19472.47, stdev=13190.88 lat (usec): min=4608, max=87678, avg=19473.64, stdev=13190.94 clat percentiles (usec): | 1.00th=[ 5211], 5.00th=[ 5735], 10.00th=[ 6325], 20.00th=[ 7504], | 30.00th=[ 9634], 40.00th=[12649], 50.00th=[16319], 60.00th=[20317], | 70.00th=[24773], 80.00th=[29230], 90.00th=[38536], 95.00th=[42730], | 99.00th=[66847], 99.50th=[67634], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 223, max= 1472, per=24.20%, avg=445.81, stdev=267.78, samples=26 iops : min= 13, max= 92, avg=27.31, stdev=16.90, samples=26 lat (msec) : 4=0.52%, 10=36.20%, 20=30.86%, 50=30.47%, 100=1.95% cpu : usr=0.11%, sys=12.03%, ctx=1369, 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=189196: Tue Jan 6 14:49:57 2026 read: IOPS=28, BW=460KiB/s (471kB/s)(6256KiB/13589msec) clat (usec): min=3069, max=67272, avg=15299.07, stdev=11969.36 lat (usec): min=3069, max=67272, avg=15299.69, stdev=11969.38 clat percentiles (usec): | 1.00th=[ 3687], 5.00th=[ 4490], 10.00th=[ 5080], 20.00th=[ 5866], | 30.00th=[ 7832], 40.00th=[ 9503], 50.00th=[10945], 60.00th=[13435], | 70.00th=[16450], 80.00th=[22676], 90.00th=[34341], 95.00th=[44303], | 99.00th=[55313], 99.50th=[60556], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 190, max= 1472, per=24.81%, avg=434.35, stdev=255.19, samples=26 iops : min= 11, max= 92, avg=26.62, stdev=16.03, samples=26 write: IOPS=27, BW=444KiB/s (455kB/s)(6032KiB/13589msec); 0 zone resets clat (usec): min=4899, max=86819, avg=19963.94, stdev=13434.65 lat (usec): min=4899, max=86821, avg=19965.37, stdev=13434.54 clat percentiles (usec): | 1.00th=[ 5080], 5.00th=[ 5604], 10.00th=[ 6587], 20.00th=[ 7701], | 30.00th=[10683], 40.00th=[12911], 50.00th=[16450], 60.00th=[20055], | 70.00th=[25035], 80.00th=[31065], 90.00th=[38536], 95.00th=[45351], | 99.00th=[61080], 99.50th=[76022], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 127, max= 1152, per=22.49%, avg=414.19, stdev=217.98, samples=26 iops : min= 7, max= 72, avg=25.35, stdev=13.80, samples=26 lat (msec) : 4=0.78%, 10=35.29%, 20=32.16%, 50=29.43%, 100=2.34% cpu : usr=0.13%, sys=12.11%, ctx=1372, 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=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=189197: Tue Jan 6 14:49:57 2026 read: IOPS=27, BW=441KiB/s (452kB/s)(6032KiB/13676msec) clat (usec): min=2313, max=68343, avg=16036.32, stdev=12492.01 lat (usec): min=2314, max=68343, avg=16036.89, stdev=12492.01 clat percentiles (usec): | 1.00th=[ 2540], 5.00th=[ 4555], 10.00th=[ 5014], 20.00th=[ 6259], | 30.00th=[ 7635], 40.00th=[ 9765], 50.00th=[11469], 60.00th=[14222], | 70.00th=[18744], 80.00th=[25035], 90.00th=[36963], 95.00th=[43254], | 99.00th=[56886], 99.50th=[64226], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 192, max= 1312, per=25.00%, avg=437.78, stdev=289.76, samples=27 iops : min= 12, max= 82, avg=26.85, stdev=18.28, samples=27 write: IOPS=28, BW=457KiB/s (468kB/s)(6256KiB/13676msec); 0 zone resets clat (usec): min=3283, max=69260, avg=19264.27, stdev=12636.08 lat (usec): min=3284, max=69262, avg=19265.55, stdev=12636.08 clat percentiles (usec): | 1.00th=[ 4047], 5.00th=[ 5932], 10.00th=[ 6587], 20.00th=[ 7963], | 30.00th=[10421], 40.00th=[12387], 50.00th=[16581], 60.00th=[20317], | 70.00th=[23462], 80.00th=[28967], 90.00th=[37487], 95.00th=[44827], | 99.00th=[63701], 99.50th=[67634], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 223, max= 1376, per=24.85%, avg=457.70, stdev=271.42, samples=27 iops : min= 13, max= 86, avg=28.07, stdev=17.17, samples=27 lat (msec) : 4=2.08%, 10=32.55%, 20=31.51%, 50=31.51%, 100=2.34% cpu : usr=0.07%, sys=12.17%, ctx=1385, 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=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=1751KiB/s (1793kB/s), 422KiB/s-460KiB/s (432kB/s-471kB/s), io=23.4MiB (24.5MB), run=13589-13676msec WRITE: bw=1843KiB/s (1887kB/s), 444KiB/s-480KiB/s (455kB/s-492kB/s), io=24.6MiB (25.8MB), run=13589-13676msec 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=189205: Tue Jan 6 14:50:05 2026 read: IOPS=3, BW=3125KiB/s (3200kB/s)(7168KiB/2294msec) clat (msec): min=89, max=534, avg=185.24, stdev=155.86 lat (msec): min=89, max=534, avg=185.24, stdev=155.86 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 110], | 30.00th=[ 115], 40.00th=[ 115], 50.00th=[ 140], 60.00th=[ 146], | 70.00th=[ 146], 80.00th=[ 165], 90.00th=[ 535], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 1721, max= 5626, per=45.95%, avg=2829.00, stdev=1869.52, samples=4 iops : min= 1, max= 5, avg= 2.25, stdev= 1.89, samples=4 write: IOPS=2, BW=2232KiB/s (2285kB/s)(5120KiB/2294msec); 0 zone resets clat (msec): min=122, max=265, avg=193.53, stdev=69.93 lat (msec): min=122, max=265, avg=193.60, stdev=69.92 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 194], 60.00th=[ 194], | 70.00th=[ 262], 80.00th=[ 262], 90.00th=[ 266], 95.00th=[ 266], | 99.00th=[ 266], 99.50th=[ 266], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 1875, max= 4096, per=30.52%, avg=2630.67, stdev=1269.22, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (msec) : 100=8.33%, 250=66.67%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=53.03%, ctx=1464, 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=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=189206: Tue Jan 6 14:50:05 2026 read: IOPS=0, BW=822KiB/s (842kB/s)(2048KiB/2492msec) clat (usec): min=829, max=81940, avg=41384.58, stdev=57354.23 lat (usec): min=830, max=81941, avg=41386.00, stdev=57354.65 clat percentiles (usec): | 1.00th=[ 832], 5.00th=[ 832], 10.00th=[ 832], 20.00th=[ 832], | 30.00th=[ 832], 40.00th=[ 832], 50.00th=[ 832], 60.00th=[82314], | 70.00th=[82314], 80.00th=[82314], 90.00th=[82314], 95.00th=[82314], | 99.00th=[82314], 99.50th=[82314], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 1721, max= 1921, per=29.58%, avg=1821.00, stdev=141.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=4, BW=4109KiB/s (4208kB/s)(10.0MiB/2492msec); 0 zone resets clat (msec): min=105, max=718, avg=239.68, stdev=179.69 lat (msec): min=105, max=718, avg=239.73, stdev=179.68 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 117], | 30.00th=[ 138], 40.00th=[ 140], 50.00th=[ 194], 60.00th=[ 197], | 70.00th=[ 232], 80.00th=[ 259], 90.00th=[ 300], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 3750, max= 6144, per=60.55%, avg=5219.00, stdev=1286.38, samples=3 iops : min= 3, max= 6, avg= 4.67, stdev= 1.53, samples=3 lat (usec) : 1000=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=51.79%, ctx=400, 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=189207: Tue Jan 6 14:50:05 2026 read: IOPS=1, BW=1847KiB/s (1892kB/s)(6144KiB/3326msec) clat (usec): min=714, max=1402.8k, avg=284605.88, stdev=550419.45 lat (usec): min=715, max=1402.8k, avg=284606.94, stdev=550419.27 clat percentiles (usec): | 1.00th=[ 717], 5.00th=[ 717], 10.00th=[ 717], | 20.00th=[ 766], 30.00th=[ 766], 40.00th=[ 63177], | 50.00th=[ 63177], 60.00th=[ 111674], 70.00th=[ 128451], | 80.00th=[ 128451], 90.00th=[1400898], 95.00th=[1400898], | 99.00th=[1400898], 99.50th=[1400898], 99.90th=[1400898], | 99.95th=[1400898], 99.99th=[1400898] bw ( KiB/s): min= 3842, max= 6144, per=81.09%, avg=4993.00, stdev=1627.76, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1847KiB/s (1892kB/s)(6144KiB/3326msec); 0 zone resets clat (msec): min=121, max=639, avg=264.87, stdev=195.66 lat (msec): min=121, max=639, avg=264.93, stdev=195.66 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 131], | 30.00th=[ 131], 40.00th=[ 159], 50.00th=[ 159], 60.00th=[ 255], | 70.00th=[ 284], 80.00th=[ 284], 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= 1875, max= 3442, per=26.93%, avg=2321.50, stdev=750.57, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=33.26%, ctx=1145, 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=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=189208: Tue Jan 6 14:50:05 2026 read: IOPS=2, BW=2190KiB/s (2242kB/s)(5120KiB/2338msec) clat (usec): min=537, max=262361, avg=87601.41, stdev=123109.16 lat (usec): min=537, max=262362, avg=87602.18, stdev=123109.31 clat percentiles (usec): | 1.00th=[ 537], 5.00th=[ 537], 10.00th=[ 537], 20.00th=[ 537], | 30.00th=[ 603], 40.00th=[ 603], 50.00th=[ 840], 60.00th=[ 840], | 70.00th=[173016], 80.00th=[173016], 90.00th=[263193], 95.00th=[263193], | 99.00th=[263193], 99.50th=[263193], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 1921, max= 6144, per=65.49%, avg=4032.50, stdev=2986.11, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=2, BW=3066KiB/s (3139kB/s)(7168KiB/2338msec); 0 zone resets clat (msec): min=117, max=526, avg=267.81, stdev=129.99 lat (msec): min=117, max=526, avg=267.87, stdev=129.98 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 190], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 253], 60.00th=[ 257], | 70.00th=[ 257], 80.00th=[ 321], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 1732, max= 3750, per=27.41%, avg=2362.75, stdev=933.90, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 750=16.67%, 1000=8.33% lat (msec) : 250=33.33%, 500=33.33%, 750=8.33% cpu : usr=0.04%, sys=45.10%, ctx=206, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6158KiB/s (6305kB/s), 822KiB/s-3125KiB/s (842kB/s-3200kB/s), io=20.0MiB (20.0MB), run=2294-3326msec WRITE: bw=8621KiB/s (8827kB/s), 1847KiB/s-4109KiB/s (1892kB/s-4208kB/s), io=28.0MiB (29.4MB), run=2294-3326msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189211: Tue Jan 6 14:50:06 2026 read: IOPS=2, BW=2204KiB/s (2256kB/s)(7168KiB/3253msec) clat (msec): min=35, max=659, avg=197.05, stdev=244.92 lat (msec): min=35, max=659, avg=197.06, stdev=244.92 clat percentiles (msec): | 1.00th=[ 36], 5.00th=[ 36], 10.00th=[ 36], 20.00th=[ 46], | 30.00th=[ 48], 40.00th=[ 48], 50.00th=[ 78], 60.00th=[ 94], | 70.00th=[ 94], 80.00th=[ 422], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1878, max= 4096, per=52.79%, avg=3294.00, stdev=1229.89, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1574KiB/s (1612kB/s)(5120KiB/3253msec); 0 zone resets clat (msec): min=63, max=1444, avg=360.07, stdev=606.31 lat (msec): min=63, max=1444, avg=360.13, stdev=606.31 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 64], | 30.00th=[ 91], 40.00th=[ 91], 50.00th=[ 97], 60.00th=[ 97], | 70.00th=[ 106], 80.00th=[ 106], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8192, max= 8192, per=93.77%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 lat (msec) : 50=25.00%, 100=41.67%, 250=8.33%, 500=8.33%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=11.07%, ctx=73, 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=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=189212: Tue Jan 6 14:50:06 2026 read: IOPS=0, BW=624KiB/s (639kB/s)(2048KiB/3282msec) clat (msec): min=39, max=174, avg=106.73, stdev=95.24 lat (msec): min=39, max=174, avg=106.73, stdev=95.24 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 40], 10.00th=[ 40], 20.00th=[ 40], | 30.00th=[ 40], 40.00th=[ 40], 50.00th=[ 40], 60.00th=[ 176], | 70.00th=[ 176], 80.00th=[ 176], 90.00th=[ 176], 95.00th=[ 176], | 99.00th=[ 176], 99.50th=[ 176], 99.90th=[ 176], 99.95th=[ 176], | 99.99th=[ 176] bw ( KiB/s): min= 1865, max= 2048, per=31.35%, avg=1956.50, stdev=129.40, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3120KiB/s (3195kB/s)(10.0MiB/3282msec); 0 zone resets clat (msec): min=17, max=1099, avg=299.00, stdev=345.75 lat (msec): min=17, max=1099, avg=299.07, stdev=345.77 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 18], 10.00th=[ 18], 20.00th=[ 46], | 30.00th=[ 52], 40.00th=[ 83], 50.00th=[ 109], 60.00th=[ 192], | 70.00th=[ 363], 80.00th=[ 376], 90.00th=[ 651], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1954, max= 6144, per=34.81%, avg=3041.25, stdev=2068.87, samples=4 iops : min= 1, max= 6, avg= 2.50, stdev= 2.38, samples=4 lat (msec) : 20=8.33%, 50=16.67%, 100=16.67%, 250=25.00%, 500=16.67% lat (msec) : 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=15.45%, ctx=89, 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=189213: Tue Jan 6 14:50:06 2026 read: IOPS=1, BW=1899KiB/s (1944kB/s)(6144KiB/3236msec) clat (msec): min=48, max=987, avg=276.42, stdev=370.81 lat (msec): min=48, max=987, avg=276.42, stdev=370.81 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 50], | 30.00th=[ 50], 40.00th=[ 63], 50.00th=[ 63], 60.00th=[ 130], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 1954, max= 6144, per=54.20%, avg=3382.00, stdev=2392.42, samples=3 iops : min= 1, max= 6, avg= 3.00, stdev= 2.65, samples=3 write: IOPS=1, BW=1899KiB/s (1944kB/s)(6144KiB/3236msec); 0 zone resets clat (msec): min=57, max=717, avg=250.07, stdev=238.76 lat (msec): min=57, max=717, avg=250.14, stdev=238.76 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 58], 10.00th=[ 58], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 218], | 70.00th=[ 243], 80.00th=[ 243], 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= 1954, max= 3737, per=28.01%, avg=2446.75, stdev=861.31, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 50=16.67%, 100=16.67%, 250=41.67%, 500=8.33%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.03%, sys=16.91%, ctx=149, 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=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=189214: Tue Jan 6 14:50:06 2026 read: IOPS=1, BW=1955KiB/s (2002kB/s)(5120KiB/2619msec) clat (msec): min=25, max=398, avg=152.99, stdev=153.54 lat (msec): min=25, max=398, avg=152.99, stdev=153.54 clat percentiles (msec): | 1.00th=[ 26], 5.00th=[ 26], 10.00th=[ 26], 20.00th=[ 26], | 30.00th=[ 45], 40.00th=[ 45], 50.00th=[ 95], 60.00th=[ 95], | 70.00th=[ 203], 80.00th=[ 203], 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= 2048, max= 6144, per=65.64%, 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=2737KiB/s (2803kB/s)(7168KiB/2619msec); 0 zone resets clat (msec): min=48, max=644, avg=251.15, stdev=224.02 lat (msec): min=48, max=644, avg=251.23, stdev=224.02 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 56], | 30.00th=[ 114], 40.00th=[ 114], 50.00th=[ 176], 60.00th=[ 264], | 70.00th=[ 264], 80.00th=[ 456], 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= 1802, max= 6144, per=31.98%, avg=2793.40, stdev=1875.45, samples=5 iops : min= 1, max= 6, avg= 2.20, stdev= 2.17, samples=5 lat (msec) : 50=25.00%, 100=16.67%, 250=25.00%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=23.38%, 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=6240KiB/s (6390kB/s), 624KiB/s-2204KiB/s (639kB/s-2256kB/s), io=20.0MiB (20.0MB), run=2619-3282msec WRITE: bw=8736KiB/s (8946kB/s), 1574KiB/s-3120KiB/s (1612kB/s-3195kB/s), io=28.0MiB (29.4MB), run=2619-3282msec 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=189219: Tue Jan 6 14:50:14 2026 read: IOPS=3, BW=15.3MiB/s (16.1MB/s)(12.0MiB/783msec) clat (msec): min=165, max=353, avg=252.65, stdev=95.10 lat (msec): min=165, max=353, avg=252.65, stdev=95.10 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 239], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min=14602, max=14602, per=100.00%, avg=14602.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 500=33.33% cpu : usr=0.00%, sys=30.82%, ctx=87, 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=189220: Tue Jan 6 14:50:14 2026 read: IOPS=0, BW=2061KiB/s (2111kB/s)(4096KiB/1987msec) clat (nsec): min=525659k, max=525659k, avg=525659364.00, stdev= 0.00 lat (nsec): min=525662k, max=525662k, avg=525661578.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 527], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 8192, max= 8192, per=99.36%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4123KiB/s (4222kB/s)(8192KiB/1987msec); 0 zone resets clat (msec): min=182, max=1234, avg=708.21, stdev=744.06 lat (msec): min=182, max=1234, avg=708.57, stdev=743.96 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 182], 60.00th=[ 1234], | 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] lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.05%, sys=16.62%, ctx=95, 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=189221: Tue Jan 6 14:50:14 2026 write: IOPS=1, BW=7280KiB/s (7454kB/s)(12.0MiB/1688msec); 0 zone resets clat (msec): min=201, max=979, avg=546.20, stdev=396.32 lat (msec): min=201, max=979, avg=546.51, stdev=396.38 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 8175, max= 8192, per=49.62%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 1000=33.33% cpu : usr=0.00%, sys=16.42%, ctx=67, 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=189222: Tue Jan 6 14:50:14 2026 write: IOPS=1, BW=7345KiB/s (7521kB/s)(12.0MiB/1673msec); 0 zone resets clat (msec): min=198, max=842, avg=547.84, stdev=325.39 lat (msec): min=198, max=842, avg=548.14, stdev=325.34 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 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= 7406, max= 8192, per=47.29%, avg=7799.00, stdev=555.79, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.06%, sys=14.23%, ctx=44, 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=8246KiB/s (8443kB/s), 2061KiB/s-15.3MiB/s (2111kB/s-16.1MB/s), io=16.0MiB (16.8MB), run=783-1987msec WRITE: bw=16.1MiB/s (16.9MB/s), 4123KiB/s-7345KiB/s (4222kB/s-7521kB/s), io=32.0MiB (33.6MB), run=1673-1987msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189224: Tue Jan 6 14:50:14 2026 read: IOPS=2, BW=9570KiB/s (9800kB/s)(12.0MiB/1284msec) clat (msec): min=409, max=441, avg=422.35, stdev=16.86 lat (msec): min=409, max=441, avg=422.35, stdev=16.86 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 409], 10.00th=[ 409], 20.00th=[ 409], | 30.00th=[ 409], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 443], 80.00th=[ 443], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 7327, max= 8192, per=74.83%, avg=7759.50, stdev=611.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.08%, sys=61.96%, ctx=2964, 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=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=189225: Tue Jan 6 14:50:14 2026 read: IOPS=0, BW=2592KiB/s (2655kB/s)(4096KiB/1580msec) clat (nsec): min=431717k, max=431717k, avg=431717183.00, stdev= 0.00 lat (nsec): min=431719k, max=431719k, avg=431719398.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 430], 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= 7135, max= 7135, per=68.81%, avg=7135.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5185KiB/s (5309kB/s)(8192KiB/1580msec); 0 zone resets clat (msec): min=398, max=739, avg=569.27, stdev=240.85 lat (msec): min=399, max=739, avg=569.54, stdev=240.84 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=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 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= 8192, max= 8192, per=46.25%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.06%, sys=16.72%, ctx=1039, 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=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=189226: Tue Jan 6 14:50:14 2026 write: IOPS=1, BW=6642KiB/s (6802kB/s)(12.0MiB/1850msec); 0 zone resets clat (msec): min=177, max=1293, avg=599.93, stdev=605.22 lat (msec): min=177, max=1293, avg=600.20, stdev=605.22 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8192, max= 8192, per=46.25%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=17.58%, ctx=52, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=189227: Tue Jan 6 14:50:14 2026 write: IOPS=1, BW=7199KiB/s (7371kB/s)(12.0MiB/1707msec); 0 zone resets clat (msec): min=284, max=851, avg=561.19, stdev=283.93 lat (msec): min=284, max=851, avg=561.42, stdev=283.86 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 284], 10.00th=[ 284], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 852], 95.00th=[ 852], | 99.00th=[ 852], 99.50th=[ 852], 99.90th=[ 852], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7861, max= 8192, per=45.32%, avg=8026.50, stdev=234.05, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=16.65%, ctx=76, 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=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=10.1MiB/s (10.6MB/s), 2592KiB/s-9570KiB/s (2655kB/s-9800kB/s), io=16.0MiB (16.8MB), run=1284-1580msec WRITE: bw=17.3MiB/s (18.1MB/s), 5185KiB/s-7199KiB/s (5309kB/s-7371kB/s), io=32.0MiB (33.6MB), run=1580-1850msec