== sanity test 398b: DIO and buffer IO race ============== 23:55:51 (1790394951) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.93972 s, 17.1 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=182666: Fri Sep 25 23:56:43 2026 read: IOPS=34, BW=139KiB/s (143kB/s)(5992KiB/42966msec) clat (usec): min=29, max=705362, avg=15402.45, stdev=19599.50 lat (usec): min=29, max=705363, avg=15403.48, stdev=19599.13 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 5932], 10.00th=[ 7177], 20.00th=[ 8586], | 30.00th=[ 9896], 40.00th=[ 11469], 50.00th=[ 13435], 60.00th=[ 15795], | 70.00th=[ 17957], 80.00th=[ 20579], 90.00th=[ 25035], 95.00th=[ 30278], | 99.00th=[ 41157], 99.50th=[ 49021], 99.90th=[ 76022], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 63, max= 208, per=25.27%, avg=140.51, stdev=34.13, samples=84 iops : min= 15, max= 52, avg=34.81, stdev= 8.52, samples=84 write: IOPS=36, BW=147KiB/s (150kB/s)(6296KiB/42966msec); 0 zone resets clat (usec): min=488, max=67857, avg=12609.59, stdev=10128.06 lat (usec): min=489, max=67858, avg=12610.18, stdev=10128.08 clat percentiles (usec): | 1.00th=[ 734], 5.00th=[ 1926], 10.00th=[ 2442], 20.00th=[ 2999], | 30.00th=[ 5276], 40.00th=[ 8455], 50.00th=[10290], 60.00th=[12649], | 70.00th=[16057], 80.00th=[20317], 90.00th=[26608], 95.00th=[32637], | 99.00th=[43254], 99.50th=[49021], 99.90th=[64750], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 55, max= 224, per=25.27%, avg=147.06, stdev=39.04, samples=84 iops : min= 13, max= 56, avg=36.45, stdev= 9.77, samples=84 lat (usec) : 50=0.07%, 100=0.94%, 250=0.42%, 500=0.10%, 750=0.55% lat (usec) : 1000=0.26% lat (msec) : 2=2.02%, 4=10.84%, 10=24.54%, 20=39.03%, 50=20.77% lat (msec) : 100=0.42%, 750=0.03% cpu : usr=0.09%, sys=25.18%, ctx=8308, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182667: Fri Sep 25 23:56:43 2026 read: IOPS=34, BW=139KiB/s (143kB/s)(5940KiB/42641msec) clat (usec): min=37, max=708359, avg=15457.05, stdev=19750.40 lat (usec): min=38, max=708360, avg=15457.55, stdev=19750.42 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 5997], 10.00th=[ 7308], 20.00th=[ 8586], | 30.00th=[ 9896], 40.00th=[ 11469], 50.00th=[ 13566], 60.00th=[ 15664], | 70.00th=[ 17695], 80.00th=[ 20317], 90.00th=[ 25297], 95.00th=[ 30278], | 99.00th=[ 40633], 99.50th=[ 46924], 99.90th=[ 69731], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 32, max= 215, per=25.30%, avg=140.66, stdev=35.88, samples=83 iops : min= 8, max= 53, avg=34.86, stdev= 9.00, samples=83 write: IOPS=37, BW=149KiB/s (152kB/s)(6348KiB/42641msec); 0 zone resets clat (usec): min=589, max=95574, avg=12384.14, stdev=10176.76 lat (usec): min=590, max=95575, avg=12384.74, stdev=10176.79 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 2040], 10.00th=[ 2474], 20.00th=[ 3032], | 30.00th=[ 4621], 40.00th=[ 8225], 50.00th=[10159], 60.00th=[12387], | 70.00th=[15533], 80.00th=[19792], 90.00th=[25822], 95.00th=[30802], | 99.00th=[45351], 99.50th=[50594], 99.90th=[61604], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 63, max= 256, per=25.59%, avg=148.95, stdev=42.78, samples=83 iops : min= 15, max= 64, avg=36.93, stdev=10.71, samples=83 lat (usec) : 50=0.16%, 100=0.52%, 250=0.62%, 500=0.03%, 750=0.20% lat (usec) : 1000=0.36% lat (msec) : 2=1.86%, 4=11.98%, 10=24.51%, 20=39.26%, 50=20.02% lat (msec) : 100=0.46%, 750=0.03% cpu : usr=0.10%, sys=25.19%, ctx=8375, 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=182668: Fri Sep 25 23:56:43 2026 read: IOPS=35, BW=142KiB/s (145kB/s)(6028KiB/42563msec) clat (usec): min=29, max=95944, avg=14944.02, stdev=8412.32 lat (usec): min=30, max=95944, avg=14944.59, stdev=8412.36 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 5735], 10.00th=[ 7177], 20.00th=[ 8455], | 30.00th=[ 9765], 40.00th=[11338], 50.00th=[13435], 60.00th=[15664], | 70.00th=[17957], 80.00th=[20579], 90.00th=[24773], 95.00th=[30016], | 99.00th=[43254], 99.50th=[49021], 99.90th=[55313], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 64, max= 222, per=25.73%, avg=143.07, stdev=34.25, samples=83 iops : min= 16, max= 55, avg=35.46, stdev= 8.60, samples=83 write: IOPS=36, BW=147KiB/s (151kB/s)(6260KiB/42563msec); 0 zone resets clat (usec): min=598, max=718741, avg=12781.29, stdev=20447.66 lat (usec): min=598, max=718742, avg=12783.11, stdev=20447.50 clat percentiles (usec): | 1.00th=[ 938], 5.00th=[ 2040], 10.00th=[ 2474], 20.00th=[ 3064], | 30.00th=[ 4686], 40.00th=[ 7832], 50.00th=[ 10159], 60.00th=[ 12518], | 70.00th=[ 15795], 80.00th=[ 19792], 90.00th=[ 26084], 95.00th=[ 31589], | 99.00th=[ 45876], 99.50th=[ 51643], 99.90th=[ 63177], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 71, max= 231, per=25.46%, avg=148.18, stdev=37.24, samples=83 iops : min= 17, max= 57, avg=36.73, stdev= 9.29, samples=83 lat (usec) : 50=0.07%, 100=0.81%, 250=0.72%, 750=0.20%, 1000=0.55% lat (msec) : 2=1.69%, 4=11.78%, 10=24.74%, 20=38.90%, 50=19.99% lat (msec) : 100=0.52%, 750=0.03% cpu : usr=0.10%, sys=25.18%, ctx=8385, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182669: Fri Sep 25 23:56:43 2026 read: IOPS=35, BW=140KiB/s (144kB/s)(6052KiB/43161msec) clat (usec): min=29, max=71252, avg=15023.79, stdev=8197.41 lat (usec): min=29, max=71252, avg=15024.36, stdev=8197.37 clat percentiles (usec): | 1.00th=[ 98], 5.00th=[ 5800], 10.00th=[ 7111], 20.00th=[ 8717], | 30.00th=[10028], 40.00th=[11731], 50.00th=[13829], 60.00th=[15795], | 70.00th=[17695], 80.00th=[20317], 90.00th=[24511], 95.00th=[30540], | 99.00th=[42206], 99.50th=[48497], 99.90th=[65274], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 71, max= 213, per=25.33%, avg=140.86, stdev=32.81, samples=84 iops : min= 17, max= 53, avg=34.90, stdev= 8.23, samples=84 write: IOPS=36, BW=144KiB/s (148kB/s)(6236KiB/43161msec); 0 zone resets clat (usec): min=580, max=715873, avg=13084.28, stdev=20594.66 lat (usec): min=581, max=715875, avg=13084.93, stdev=20594.72 clat percentiles (usec): | 1.00th=[ 865], 5.00th=[ 2089], 10.00th=[ 2474], 20.00th=[ 3032], | 30.00th=[ 4621], 40.00th=[ 8356], 50.00th=[ 10290], 60.00th=[ 12518], | 70.00th=[ 16057], 80.00th=[ 20841], 90.00th=[ 26608], 95.00th=[ 32900], | 99.00th=[ 46400], 99.50th=[ 51119], 99.90th=[ 76022], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 47, max= 240, per=24.94%, avg=145.14, stdev=40.20, samples=84 iops : min= 11, max= 60, avg=35.98, stdev=10.06, samples=84 lat (usec) : 50=0.07%, 100=0.65%, 250=0.65%, 500=0.03%, 750=0.42% lat (usec) : 1000=0.33% lat (msec) : 2=1.69%, 4=11.78%, 10=23.96%, 20=39.36%, 50=20.57% lat (msec) : 100=0.46%, 750=0.03% cpu : usr=0.07%, sys=25.02%, ctx=8439, 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=556KiB/s (570kB/s), 139KiB/s-142KiB/s (143kB/s-145kB/s), io=23.4MiB (24.6MB), run=42563-43161msec WRITE: bw=582KiB/s (596kB/s), 144KiB/s-149KiB/s (148kB/s-152kB/s), io=24.6MiB (25.7MB), run=42563-43161msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182661: Fri Sep 25 23:56:51 2026 read: IOPS=29, BW=118KiB/s (121kB/s)(5992KiB/50709msec) clat (msec): min=2, max=717, avg=14.41, stdev=21.46 lat (msec): min=2, max=717, avg=14.41, stdev=21.46 clat percentiles (msec): | 1.00th=[ 3], 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=[ 30], 95.00th=[ 39], | 99.00th=[ 58], 99.50th=[ 66], 99.90th=[ 78], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 24, max= 448, per=25.30%, avg=119.43, stdev=83.06, samples=100 iops : min= 6, max= 112, avg=29.55, stdev=20.88, samples=100 write: IOPS=31, BW=124KiB/s (127kB/s)(6296KiB/50709msec); 0 zone resets clat (msec): min=3, max=109, avg=18.39, stdev=13.27 lat (msec): min=3, max=109, avg=18.39, stdev=13.27 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 37], 95.00th=[ 44], | 99.00th=[ 59], 99.50th=[ 74], 99.90th=[ 106], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 32, max= 368, per=25.39%, avg=125.43, stdev=79.30, samples=100 iops : min= 8, max= 92, avg=31.05, stdev=19.92, samples=100 lat (msec) : 4=4.20%, 10=37.83%, 20=29.23%, 50=26.60%, 100=2.05% lat (msec) : 250=0.07%, 750=0.03% cpu : usr=0.08%, sys=11.32%, ctx=5154, 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=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=182662: Fri Sep 25 23:56:51 2026 read: IOPS=29, BW=117KiB/s (120kB/s)(5940KiB/50661msec) clat (msec): min=2, max=719, avg=14.55, stdev=21.52 lat (msec): min=2, max=719, avg=14.55, stdev=21.52 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=[ 30], 95.00th=[ 38], | 99.00th=[ 55], 99.50th=[ 66], 99.90th=[ 75], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 8, max= 408, per=24.91%, avg=117.57, stdev=81.66, samples=99 iops : min= 2, max= 102, avg=29.08, stdev=20.53, samples=99 write: IOPS=31, BW=125KiB/s (128kB/s)(6348KiB/50661msec); 0 zone resets clat (msec): min=3, max=103, avg=18.20, stdev=13.22 lat (msec): min=3, max=103, avg=18.20, stdev=13.22 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 28], 90.00th=[ 36], 95.00th=[ 45], | 99.00th=[ 62], 99.50th=[ 72], 99.90th=[ 100], 99.95th=[ 105], | 99.99th=[ 105] bw ( KiB/s): min= 40, max= 408, per=25.22%, avg=124.60, stdev=76.93, samples=99 iops : min= 10, max= 102, avg=30.84, stdev=19.32, samples=99 lat (msec) : 4=3.74%, 10=37.27%, 20=30.47%, 50=26.11%, 100=2.34% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.08%, sys=11.35%, ctx=5116, 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=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=182663: Fri Sep 25 23:56:51 2026 read: IOPS=29, BW=119KiB/s (122kB/s)(6028KiB/50516msec) clat (usec): min=2499, max=77194, avg=14122.51, stdev=11296.76 lat (usec): min=2500, max=77195, avg=14123.11, stdev=11296.79 clat percentiles (usec): | 1.00th=[ 3064], 5.00th=[ 3785], 10.00th=[ 4146], 20.00th=[ 5211], | 30.00th=[ 7373], 40.00th=[ 8848], 50.00th=[10290], 60.00th=[12387], | 70.00th=[15401], 80.00th=[20841], 90.00th=[31065], 95.00th=[36963], | 99.00th=[52691], 99.50th=[61604], 99.90th=[76022], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 31, max= 416, per=25.40%, avg=119.91, stdev=79.15, samples=99 iops : min= 7, max= 104, avg=29.67, stdev=19.92, samples=99 write: IOPS=30, BW=124KiB/s (127kB/s)(6260KiB/50516msec); 0 zone resets clat (msec): min=3, max=724, avg=18.57, stdev=22.13 lat (msec): min=3, max=724, avg=18.57, stdev=22.13 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 28], 90.00th=[ 36], 95.00th=[ 43], | 99.00th=[ 62], 99.50th=[ 75], 99.90th=[ 100], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 32, max= 400, per=25.11%, avg=124.03, stdev=79.82, samples=99 iops : min= 8, max= 100, avg=30.70, stdev=20.05, samples=99 lat (msec) : 4=4.26%, 10=37.57%, 20=29.17%, 50=27.05%, 100=1.92% lat (msec) : 750=0.03% cpu : usr=0.09%, sys=11.36%, ctx=5134, 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=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=182664: Fri Sep 25 23:56:51 2026 read: IOPS=29, BW=119KiB/s (122kB/s)(6052KiB/50831msec) clat (usec): min=1872, max=89401, avg=14026.36, stdev=11366.82 lat (usec): min=1872, max=89402, avg=14026.96, stdev=11366.83 clat percentiles (usec): | 1.00th=[ 2180], 5.00th=[ 3556], 10.00th=[ 4113], 20.00th=[ 5014], | 30.00th=[ 6783], 40.00th=[ 8848], 50.00th=[10028], 60.00th=[12256], | 70.00th=[15533], 80.00th=[21103], 90.00th=[30802], 95.00th=[38011], | 99.00th=[50070], 99.50th=[56886], 99.90th=[74974], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 31, max= 488, per=25.20%, avg=118.95, stdev=80.68, samples=100 iops : min= 7, max= 122, avg=29.43, stdev=20.28, samples=100 write: IOPS=30, BW=123KiB/s (126kB/s)(6236KiB/50831msec); 0 zone resets clat (msec): min=3, max=723, avg=18.88, stdev=22.33 lat (msec): min=3, max=723, avg=18.88, stdev=22.33 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 24], 80.00th=[ 29], 90.00th=[ 37], 95.00th=[ 45], | 99.00th=[ 59], 99.50th=[ 74], 99.90th=[ 110], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 31, max= 416, per=24.89%, avg=122.95, stdev=79.77, samples=100 iops : min= 7, max= 104, avg=30.43, stdev=20.06, samples=100 lat (msec) : 2=0.33%, 4=4.62%, 10=37.40%, 20=28.22%, 50=27.38% lat (msec) : 100=1.95%, 250=0.07%, 750=0.03% cpu : usr=0.07%, sys=11.19%, ctx=5224, 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=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=472KiB/s (484kB/s), 117KiB/s-119KiB/s (120kB/s-122kB/s), io=23.4MiB (24.6MB), run=50516-50831msec WRITE: bw=495KiB/s (506kB/s), 123KiB/s-125KiB/s (126kB/s-128kB/s), io=24.6MiB (25.7MB), run=50516-50831msec 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=182687: Fri Sep 25 23:57:12 2026 read: IOPS=24, BW=398KiB/s (408kB/s)(5920KiB/14865msec) clat (usec): min=55, max=68251, avg=20814.12, stdev=12772.93 lat (usec): min=55, max=68251, avg=20814.86, stdev=12772.99 clat percentiles (usec): | 1.00th=[ 88], 5.00th=[ 198], 10.00th=[ 8979], 20.00th=[10945], | 30.00th=[13304], 40.00th=[15664], 50.00th=[18482], 60.00th=[21365], | 70.00th=[24511], 80.00th=[29754], 90.00th=[37487], 95.00th=[46400], | 99.00th=[63701], 99.50th=[67634], 99.90th=[68682], 99.95th=[68682], | 99.99th=[68682] bw ( KiB/s): min= 191, max= 667, per=24.34%, avg=389.48, stdev=132.34, samples=29 iops : min= 11, max= 41, avg=23.90, stdev= 8.36, samples=29 write: IOPS=26, BW=428KiB/s (439kB/s)(6368KiB/14865msec); 0 zone resets clat (usec): min=1104, max=84667, avg=17883.74, stdev=13186.34 lat (usec): min=1105, max=84669, avg=17885.03, stdev=13186.36 clat percentiles (usec): | 1.00th=[ 2474], 5.00th=[ 3851], 10.00th=[ 4490], 20.00th=[ 5997], | 30.00th=[ 9503], 40.00th=[11731], 50.00th=[14222], 60.00th=[18220], | 70.00th=[22414], 80.00th=[26608], 90.00th=[36439], 95.00th=[42730], | 99.00th=[60031], 99.50th=[76022], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 63, max= 728, per=25.14%, avg=423.03, stdev=174.45, samples=29 iops : min= 3, max= 45, avg=25.97, stdev=10.97, samples=29 lat (usec) : 100=1.04%, 250=1.56%, 500=0.26% lat (msec) : 2=0.26%, 4=3.52%, 10=17.97%, 20=35.55%, 50=36.46% lat (msec) : 100=3.39% cpu : usr=0.10%, sys=29.41%, ctx=2744, 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=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=182688: Fri Sep 25 23:57:12 2026 read: IOPS=24, BW=388KiB/s (397kB/s)(5744KiB/14806msec) clat (usec): min=72, max=71227, avg=20529.53, stdev=11757.21 lat (usec): min=72, max=71228, avg=20532.03, stdev=11755.38 clat percentiles (usec): | 1.00th=[ 84], 5.00th=[ 212], 10.00th=[ 8848], 20.00th=[11863], | 30.00th=[13960], 40.00th=[16450], 50.00th=[17957], 60.00th=[21103], | 70.00th=[23987], 80.00th=[28443], 90.00th=[36439], 95.00th=[42206], | 99.00th=[57934], 99.50th=[67634], 99.90th=[70779], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 160, max= 704, per=24.06%, avg=385.00, stdev=154.80, samples=29 iops : min= 10, max= 44, avg=23.59, stdev= 9.75, samples=29 write: IOPS=27, BW=442KiB/s (453kB/s)(6544KiB/14806msec); 0 zone resets clat (usec): min=994, max=96245, avg=17998.54, stdev=13845.10 lat (usec): min=995, max=96247, avg=17999.81, stdev=13845.26 clat percentiles (usec): | 1.00th=[ 2008], 5.00th=[ 3687], 10.00th=[ 4359], 20.00th=[ 6063], | 30.00th=[ 9110], 40.00th=[11600], 50.00th=[14091], 60.00th=[17171], | 70.00th=[21627], 80.00th=[28181], 90.00th=[38536], 95.00th=[45876], | 99.00th=[60031], 99.50th=[63177], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 159, max= 734, per=26.03%, avg=438.14, stdev=153.91, samples=29 iops : min= 9, max= 45, avg=26.93, stdev= 9.76, samples=29 lat (usec) : 100=0.91%, 250=1.43%, 1000=0.13% lat (msec) : 2=0.39%, 4=2.73%, 10=19.53%, 20=36.72%, 50=35.16% lat (msec) : 100=2.99% cpu : usr=0.09%, sys=29.88%, ctx=2760, 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=182689: Fri Sep 25 23:57:12 2026 read: IOPS=26, BW=418KiB/s (428kB/s)(6256KiB/14967msec) clat (usec): min=63, max=74509, avg=20279.31, stdev=12918.44 lat (usec): min=63, max=74510, avg=20280.14, stdev=12918.57 clat percentiles (usec): | 1.00th=[ 88], 5.00th=[ 131], 10.00th=[ 8160], 20.00th=[10552], | 30.00th=[12649], 40.00th=[15401], 50.00th=[17957], 60.00th=[20579], | 70.00th=[23987], 80.00th=[28705], 90.00th=[36963], 95.00th=[45351], | 99.00th=[64750], 99.50th=[68682], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 190, max= 704, per=25.89%, avg=414.17, stdev=151.03, samples=29 iops : min= 11, max= 44, avg=25.41, stdev= 9.55, samples=29 write: IOPS=25, BW=403KiB/s (413kB/s)(6032KiB/14967msec); 0 zone resets clat (usec): min=964, max=74413, avg=18530.15, stdev=13830.90 lat (usec): min=966, max=74416, avg=18531.43, stdev=13831.06 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 3982], 10.00th=[ 4621], 20.00th=[ 6194], | 30.00th=[ 9241], 40.00th=[11600], 50.00th=[14222], 60.00th=[18744], | 70.00th=[23725], 80.00th=[29230], 90.00th=[39060], 95.00th=[46400], | 99.00th=[64226], 99.50th=[70779], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 127, max= 768, per=23.12%, avg=389.10, stdev=159.54, samples=29 iops : min= 7, max= 48, avg=23.86, stdev=10.05, samples=29 lat (usec) : 100=0.78%, 250=2.34%, 500=0.13%, 750=0.13%, 1000=0.26% lat (msec) : 2=0.39%, 4=2.21%, 10=18.88%, 20=35.16%, 50=36.46% lat (msec) : 100=3.26% cpu : usr=0.07%, sys=28.89%, ctx=2829, 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=182690: Fri Sep 25 23:57:12 2026 read: IOPS=25, BW=412KiB/s (422kB/s)(6032KiB/14650msec) clat (usec): min=50, max=108126, avg=20380.68, stdev=13146.77 lat (usec): min=51, max=108127, avg=20381.42, stdev=13146.86 clat percentiles (usec): | 1.00th=[ 75], 5.00th=[ 115], 10.00th=[ 7963], 20.00th=[ 10814], | 30.00th=[ 13435], 40.00th=[ 16057], 50.00th=[ 18482], 60.00th=[ 21103], | 70.00th=[ 23462], 80.00th=[ 28181], 90.00th=[ 38011], 95.00th=[ 43779], | 99.00th=[ 54789], 99.50th=[ 93848], 99.90th=[108528], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 127, max= 657, per=25.11%, avg=401.71, stdev=150.14, samples=28 iops : min= 7, max= 41, avg=24.64, stdev= 9.51, samples=28 write: IOPS=26, BW=427KiB/s (437kB/s)(6256KiB/14650msec); 0 zone resets clat (usec): min=926, max=80345, avg=17765.08, stdev=13878.16 lat (usec): min=927, max=80348, avg=17766.33, stdev=13878.29 clat percentiles (usec): | 1.00th=[ 1876], 5.00th=[ 3654], 10.00th=[ 4293], 20.00th=[ 5866], | 30.00th=[ 9241], 40.00th=[11863], 50.00th=[13698], 60.00th=[17171], | 70.00th=[21627], 80.00th=[26870], 90.00th=[35914], 95.00th=[43779], | 99.00th=[72877], 99.50th=[76022], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 160, max= 702, per=25.02%, avg=421.04, stdev=182.04, samples=28 iops : min= 10, max= 43, avg=25.82, stdev=11.46, samples=28 lat (usec) : 100=1.95%, 250=1.69%, 1000=0.13% lat (msec) : 2=0.52%, 4=2.86%, 10=17.45%, 20=37.11%, 50=35.03% lat (msec) : 100=3.12%, 250=0.13% cpu : usr=0.05%, sys=29.29%, ctx=2708, 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=1600KiB/s (1639kB/s), 388KiB/s-418KiB/s (397kB/s-428kB/s), io=23.4MiB (24.5MB), run=14650-14967msec WRITE: bw=1684KiB/s (1724kB/s), 403KiB/s-442KiB/s (413kB/s-453kB/s), io=24.6MiB (25.8MB), run=14650-14967msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182692: Fri Sep 25 23:57:13 2026 read: IOPS=23, BW=369KiB/s (378kB/s)(5920KiB/16045msec) clat (msec): min=2, max=100, avg=19.65, stdev=17.45 lat (msec): min=2, max=100, avg=19.65, stdev=17.45 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 23], 80.00th=[ 32], 90.00th=[ 44], 95.00th=[ 58], | 99.00th=[ 87], 99.50th=[ 95], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 95, max= 1309, per=23.85%, avg=355.61, stdev=250.22, samples=31 iops : min= 5, max= 81, avg=21.61, stdev=15.68, samples=31 write: IOPS=24, BW=397KiB/s (406kB/s)(6368KiB/16045msec); 0 zone resets clat (msec): min=4, max=101, avg=21.69, stdev=15.89 lat (msec): min=4, max=101, avg=21.69, stdev=15.89 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 32], 90.00th=[ 43], 95.00th=[ 53], | 99.00th=[ 81], 99.50th=[ 100], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 126, max= 1405, per=24.57%, avg=385.55, stdev=267.46, samples=31 iops : min= 7, max= 87, avg=23.48, stdev=16.73, samples=31 lat (msec) : 4=1.43%, 10=30.47%, 20=28.39%, 50=33.33%, 100=6.12% lat (msec) : 250=0.26% cpu : usr=0.06%, sys=12.85%, ctx=1512, 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=182693: Fri Sep 25 23:57:13 2026 read: IOPS=22, BW=358KiB/s (366kB/s)(5744KiB/16061msec) clat (usec): min=2404, max=81440, avg=18778.33, stdev=15936.09 lat (usec): min=2404, max=81441, avg=18779.03, stdev=15936.09 clat percentiles (usec): | 1.00th=[ 2966], 5.00th=[ 4490], 10.00th=[ 5014], 20.00th=[ 6194], | 30.00th=[ 8455], 40.00th=[10290], 50.00th=[13304], 60.00th=[16319], | 70.00th=[21365], 80.00th=[28705], 90.00th=[43254], 95.00th=[54264], | 99.00th=[72877], 99.50th=[81265], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 63, max= 1181, per=23.39%, avg=348.68, stdev=226.27, samples=31 iops : min= 3, max= 73, avg=21.19, stdev=14.13, samples=31 write: IOPS=25, BW=407KiB/s (417kB/s)(6544KiB/16061msec); 0 zone resets clat (msec): min=4, max=101, avg=22.66, stdev=17.56 lat (msec): min=4, max=101, avg=22.66, stdev=17.56 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 14], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 47], 95.00th=[ 61], | 99.00th=[ 80], 99.50th=[ 88], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 158, max= 1373, per=24.74%, avg=388.13, stdev=268.91, samples=31 iops : min= 9, max= 85, avg=23.65, stdev=16.80, samples=31 lat (msec) : 4=1.17%, 10=32.68%, 20=27.47%, 50=31.25%, 100=7.29% lat (msec) : 250=0.13% cpu : usr=0.11%, sys=12.51%, ctx=1505, 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=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=182694: Fri Sep 25 23:57:13 2026 read: IOPS=24, BW=391KiB/s (401kB/s)(6256KiB/15992msec) clat (usec): min=3676, max=97927, avg=19248.04, stdev=16117.04 lat (usec): min=3676, max=97928, avg=19248.76, stdev=16117.09 clat percentiles (usec): | 1.00th=[ 3851], 5.00th=[ 4555], 10.00th=[ 5080], 20.00th=[ 5997], | 30.00th=[ 8094], 40.00th=[10421], 50.00th=[13829], 60.00th=[17171], | 70.00th=[22414], 80.00th=[30540], 90.00th=[43779], 95.00th=[52167], | 99.00th=[71828], 99.50th=[79168], 99.90th=[98042], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 127, max= 1596, per=25.99%, avg=387.48, stdev=292.78, samples=31 iops : min= 7, max= 99, avg=23.61, stdev=18.30, samples=31 write: IOPS=23, BW=377KiB/s (386kB/s)(6032KiB/15992msec); 0 zone resets clat (usec): min=5300, max=93113, avg=22336.77, stdev=16096.12 lat (usec): min=5301, max=93114, avg=22338.42, stdev=16096.17 clat percentiles (usec): | 1.00th=[ 5538], 5.00th=[ 6063], 10.00th=[ 6783], 20.00th=[ 8455], | 30.00th=[11207], 40.00th=[14877], 50.00th=[18220], 60.00th=[21627], | 70.00th=[26346], 80.00th=[34341], 90.00th=[43779], 95.00th=[55837], | 99.00th=[78119], 99.50th=[81265], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 159, max= 1181, per=23.31%, avg=365.68, stdev=224.98, samples=31 iops : min= 9, max= 73, avg=22.23, stdev=14.12, samples=31 lat (msec) : 4=0.78%, 10=31.77%, 20=27.86%, 50=33.46%, 100=6.12% cpu : usr=0.08%, sys=12.76%, ctx=1528, 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=182695: Fri Sep 25 23:57:13 2026 read: IOPS=23, BW=377KiB/s (386kB/s)(6032KiB/15983msec) clat (usec): min=3086, max=77573, avg=18128.73, stdev=14750.18 lat (usec): min=3087, max=77574, avg=18129.38, stdev=14750.24 clat percentiles (usec): | 1.00th=[ 3228], 5.00th=[ 4555], 10.00th=[ 5080], 20.00th=[ 5735], | 30.00th=[ 7570], 40.00th=[10159], 50.00th=[13435], 60.00th=[17171], | 70.00th=[20579], 80.00th=[27657], 90.00th=[40633], 95.00th=[50070], | 99.00th=[67634], 99.50th=[71828], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 159, max= 1405, per=24.68%, avg=368.00, stdev=272.46, samples=31 iops : min= 9, max= 87, avg=22.39, stdev=17.03, samples=31 write: IOPS=24, BW=391KiB/s (401kB/s)(6256KiB/15983msec); 0 zone resets clat (msec): min=5, max=106, avg=23.09, stdev=17.07 lat (msec): min=5, max=106, avg=23.10, stdev=17.07 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 47], 95.00th=[ 59], | 99.00th=[ 80], 99.50th=[ 96], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 189, max= 1277, per=24.54%, avg=385.10, stdev=249.11, samples=31 iops : min= 11, max= 79, avg=23.45, stdev=15.59, samples=31 lat (msec) : 4=1.56%, 10=31.25%, 20=27.86%, 50=32.94%, 100=6.25% lat (msec) : 250=0.13% cpu : usr=0.06%, sys=12.79%, ctx=1445, 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=1491KiB/s (1527kB/s), 358KiB/s-391KiB/s (366kB/s-401kB/s), io=23.4MiB (24.5MB), run=15983-16061msec WRITE: bw=1569KiB/s (1607kB/s), 377KiB/s-407KiB/s (386kB/s-417kB/s), io=24.6MiB (25.8MB), run=15983-16061msec 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=182704: Fri Sep 25 23:57:22 2026 read: IOPS=2, BW=2697KiB/s (2761kB/s)(7168KiB/2658msec) clat (usec): min=498, max=200194, avg=131551.53, stdev=64681.60 lat (usec): min=499, max=200195, avg=131552.83, stdev=64681.73 clat percentiles (usec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[116917], | 30.00th=[125305], 40.00th=[125305], 50.00th=[143655], 60.00th=[156238], | 70.00th=[156238], 80.00th=[179307], 90.00th=[200279], 95.00th=[200279], | 99.00th=[200279], 99.50th=[200279], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 1946, max= 5953, per=64.40%, avg=3998.33, stdev=2005.28, samples=3 iops : min= 1, max= 5, avg= 3.33, stdev= 2.08, samples=3 write: IOPS=1, BW=1926KiB/s (1972kB/s)(5120KiB/2658msec); 0 zone resets clat (msec): min=136, max=752, avg=338.84, stdev=245.55 lat (msec): min=136, max=752, avg=338.88, stdev=245.55 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 138], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1841, max= 3893, per=28.27%, avg=2457.50, stdev=961.96, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=66.67%, 500=16.67%, 1000=8.33% cpu : usr=0.00%, sys=47.76%, ctx=854, 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=182706: Fri Sep 25 23:57:22 2026 read: IOPS=0, BW=621KiB/s (636kB/s)(2048KiB/3298msec) clat (msec): min=152, max=192, avg=172.58, stdev=28.41 lat (msec): min=152, max=192, avg=172.58, stdev=28.41 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=[ 192], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 192], 95.00th=[ 192], | 99.00th=[ 192], 99.50th=[ 192], 99.90th=[ 192], 99.95th=[ 192], | 99.99th=[ 192] bw ( KiB/s): min= 1946, max= 2019, per=31.93%, avg=1982.50, stdev=51.62, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3105KiB/s (3179kB/s)(10.0MiB/3298msec); 0 zone resets clat (msec): min=105, max=557, avg=288.62, stdev=161.66 lat (msec): min=105, max=557, avg=288.69, stdev=161.65 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 124], | 30.00th=[ 165], 40.00th=[ 199], 50.00th=[ 209], 60.00th=[ 230], | 70.00th=[ 368], 80.00th=[ 447], 90.00th=[ 481], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1841, max= 8192, per=41.70%, avg=3624.60, stdev=2718.82, samples=5 iops : min= 1, max= 8, avg= 3.20, stdev= 2.95, samples=5 lat (msec) : 250=66.67%, 500=25.00%, 750=8.33% cpu : usr=0.06%, sys=46.62%, ctx=194, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182708: Fri Sep 25 23:57:22 2026 read: IOPS=2, BW=2292KiB/s (2347kB/s)(6144KiB/2681msec) clat (usec): min=384, max=240417, avg=93084.25, stdev=106663.63 lat (usec): min=384, max=240418, avg=93085.37, stdev=106663.76 clat percentiles (usec): | 1.00th=[ 383], 5.00th=[ 383], 10.00th=[ 383], 20.00th=[ 519], | 30.00th=[ 519], 40.00th=[ 644], 50.00th=[ 644], 60.00th=[135267], | 70.00th=[179307], 80.00th=[179307], 90.00th=[240124], 95.00th=[240124], | 99.00th=[240124], 99.50th=[240124], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 1946, max= 4096, per=52.21%, avg=3241.67, stdev=1140.92, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2292KiB/s (2347kB/s)(6144KiB/2681msec); 0 zone resets clat (msec): min=145, max=913, avg=352.25, stdev=287.70 lat (msec): min=146, max=913, avg=352.30, stdev=287.70 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 275], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 1946, max= 3992, per=33.56%, avg=2917.25, stdev=1070.88, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (usec) : 500=8.33%, 750=16.67% lat (msec) : 250=50.00%, 500=16.67%, 1000=8.33% cpu : usr=0.07%, sys=42.43%, ctx=190, 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=182710: Fri Sep 25 23:57:22 2026 read: IOPS=2, BW=2279KiB/s (2333kB/s)(5120KiB/2247msec) clat (usec): min=471, max=172356, avg=68764.58, stdev=93400.65 lat (usec): min=472, max=172357, avg=68765.47, stdev=93401.02 clat percentiles (usec): | 1.00th=[ 474], 5.00th=[ 474], 10.00th=[ 474], 20.00th=[ 474], | 30.00th=[ 482], 40.00th=[ 482], 50.00th=[ 717], 60.00th=[ 717], | 70.00th=[168821], 80.00th=[168821], 90.00th=[173016], 95.00th=[173016], | 99.00th=[173016], 99.50th=[173016], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 7366, max= 7366, per=100.00%, avg=7366.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=3, BW=3190KiB/s (3267kB/s)(7168KiB/2247msec); 0 zone resets clat (msec): min=127, max=500, avg=265.70, stdev=121.97 lat (msec): min=127, max=500, avg=265.75, stdev=121.96 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 128], 10.00th=[ 128], 20.00th=[ 199], | 30.00th=[ 218], 40.00th=[ 218], 50.00th=[ 230], 60.00th=[ 245], | 70.00th=[ 245], 80.00th=[ 347], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 1841, max= 4096, per=34.64%, avg=3011.00, stdev=1254.77, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.73, samples=4 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 250=58.33%, 500=8.33%, 750=8.33% cpu : usr=0.00%, sys=53.56%, ctx=271, 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=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=6210KiB/s (6359kB/s), 621KiB/s-2697KiB/s (636kB/s-2761kB/s), io=20.0MiB (20.0MB), run=2247-3298msec WRITE: bw=8694KiB/s (8902kB/s), 1926KiB/s-3190KiB/s (1972kB/s-3267kB/s), io=28.0MiB (29.4MB), run=2247-3298msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182703: Fri Sep 25 23:57:22 2026 read: IOPS=2, BW=2466KiB/s (2525kB/s)(7168KiB/2907msec) clat (msec): min=55, max=747, avg=221.84, stdev=247.75 lat (msec): min=55, max=747, avg=221.84, stdev=247.75 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 56], 10.00th=[ 56], 20.00th=[ 67], | 30.00th=[ 85], 40.00th=[ 85], 50.00th=[ 85], 60.00th=[ 249], | 70.00th=[ 249], 80.00th=[ 266], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 1943, max= 4096, per=56.57%, avg=3272.33, stdev=1162.16, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1761KiB/s (1804kB/s)(5120KiB/2907msec); 0 zone resets clat (msec): min=68, max=463, avg=257.95, stdev=142.46 lat (msec): min=68, max=463, avg=258.02, stdev=142.47 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 69], 10.00th=[ 69], 20.00th=[ 69], | 30.00th=[ 209], 40.00th=[ 209], 50.00th=[ 275], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 1889, max= 2048, per=24.21%, avg=1961.00, stdev=80.55, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 100=41.67%, 250=16.67%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=19.41%, ctx=158, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182705: Fri Sep 25 23:57:22 2026 read: IOPS=0, BW=598KiB/s (612kB/s)(2048KiB/3424msec) clat (msec): min=237, max=520, avg=378.65, stdev=199.91 lat (msec): min=237, max=520, avg=378.65, stdev=199.91 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 239], 50.00th=[ 239], 60.00th=[ 518], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 2048, max= 2048, per=35.40%, avg=2048.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2991KiB/s (3062kB/s)(10.0MiB/3424msec); 0 zone resets clat (msec): min=80, max=548, avg=264.61, stdev=168.27 lat (msec): min=80, max=548, avg=264.69, stdev=168.27 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 81], 10.00th=[ 81], 20.00th=[ 87], | 30.00th=[ 104], 40.00th=[ 197], 50.00th=[ 218], 60.00th=[ 249], | 70.00th=[ 284], 80.00th=[ 363], 90.00th=[ 523], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1946, max= 4096, per=36.63%, avg=2967.00, stdev=1128.33, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 750=25.00% cpu : usr=0.00%, sys=20.89%, ctx=136, 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=182707: Fri Sep 25 23:57:22 2026 read: IOPS=1, BW=1736KiB/s (1777kB/s)(6144KiB/3540msec) clat (msec): min=23, max=610, avg=225.71, stdev=224.11 lat (msec): min=23, max=610, avg=225.71, stdev=224.11 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 24], 10.00th=[ 24], 20.00th=[ 32], | 30.00th=[ 32], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 167], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 2048, max= 2048, per=35.40%, avg=2048.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1736KiB/s (1777kB/s)(6144KiB/3540msec); 0 zone resets clat (msec): min=43, max=1208, avg=351.11, stdev=451.21 lat (msec): min=43, max=1208, avg=351.17, stdev=451.21 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 56], | 30.00th=[ 56], 40.00th=[ 65], 50.00th=[ 65], 60.00th=[ 271], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 1217], 95.00th=[ 1217], | 99.00th=[ 1217], 99.50th=[ 1217], 99.90th=[ 1217], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 2048, max= 4096, per=33.72%, avg=2730.67, stdev=1182.41, samples=3 iops : min= 2, max= 4, avg= 2.67, stdev= 1.15, samples=3 lat (msec) : 50=25.00%, 100=16.67%, 250=16.67%, 500=25.00%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=12.74%, ctx=130, 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=182709: Fri Sep 25 23:57:22 2026 read: IOPS=1, BW=1461KiB/s (1496kB/s)(5120KiB/3505msec) clat (msec): min=50, max=293, avg=175.27, stdev=111.61 lat (msec): min=50, max=293, avg=175.27, stdev=111.61 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 51], | 30.00th=[ 64], 40.00th=[ 64], 50.00th=[ 215], 60.00th=[ 215], | 70.00th=[ 255], 80.00th=[ 255], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 1946, max= 6144, per=69.92%, avg=4045.00, stdev=2968.43, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=2045KiB/s (2094kB/s)(7168KiB/3505msec); 0 zone resets clat (msec): min=56, max=1168, avg=363.87, stdev=383.40 lat (msec): min=56, max=1168, avg=363.94, stdev=383.39 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 128], | 30.00th=[ 133], 40.00th=[ 133], 50.00th=[ 224], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 472], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 2048, max= 3893, per=32.88%, avg=2663.00, stdev=1065.21, samples=3 iops : min= 2, max= 3, avg= 2.33, stdev= 0.58, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.00%, sys=16.52%, ctx=139, 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=5785KiB/s (5924kB/s), 598KiB/s-2466KiB/s (612kB/s-2525kB/s), io=20.0MiB (20.0MB), run=2907-3540msec WRITE: bw=8099KiB/s (8294kB/s), 1736KiB/s-2991KiB/s (1777kB/s-3062kB/s), io=28.0MiB (29.4MB), run=2907-3540msec 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=182719: Fri Sep 25 23:57:30 2026 read: IOPS=2, BW=9982KiB/s (10.2MB/s)(12.0MiB/1231msec) clat (msec): min=367, max=389, avg=381.87, stdev=12.74 lat (msec): min=367, max=389, avg=381.87, stdev=12.74 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 5704, max= 8192, per=65.31%, avg=6948.00, stdev=1759.28, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=51.95%, ctx=2551, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182721: Fri Sep 25 23:57:30 2026 read: IOPS=0, BW=2660KiB/s (2724kB/s)(4096KiB/1540msec) clat (nsec): min=411688k, max=411688k, avg=411688378.00, stdev= 0.00 lat (nsec): min=411691k, max=411691k, avg=411690713.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 414], 10.00th=[ 414], 20.00th=[ 414], | 30.00th=[ 414], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 414], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 5720, max= 5720, per=53.77%, avg=5720.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5319KiB/s (5447kB/s)(8192KiB/1540msec); 0 zone resets clat (msec): min=385, max=703, avg=544.32, stdev=225.05 lat (msec): min=385, max=703, avg=544.60, stdev=225.03 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 384], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 8192, max= 8192, per=39.95%, 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=21.18%, ctx=603, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182723: Fri Sep 25 23:57:30 2026 write: IOPS=1, BW=8042KiB/s (8235kB/s)(12.0MiB/1528msec); 0 zone resets clat (msec): min=175, max=874, avg=485.21, stdev=356.41 lat (msec): min=175, max=874, avg=485.51, stdev=356.39 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8192, max= 8192, per=39.95%, 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%, 1000=33.33% cpu : usr=0.13%, sys=15.85%, ctx=55, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182724: Fri Sep 25 23:57:30 2026 write: IOPS=1, BW=7690KiB/s (7874kB/s)(12.0MiB/1598msec); 0 zone resets clat (msec): min=355, max=817, avg=525.87, stdev=253.56 lat (msec): min=356, max=817, avg=526.77, stdev=253.13 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 5665, max= 8192, per=33.79%, avg=6928.50, stdev=1786.86, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.06%, sys=16.22%, ctx=75, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=10.4MiB/s (10.9MB/s), 2660KiB/s-9982KiB/s (2724kB/s-10.2MB/s), io=16.0MiB (16.8MB), run=1231-1540msec WRITE: bw=20.0MiB/s (20.0MB/s), 5319KiB/s-8042KiB/s (5447kB/s-8235kB/s), io=32.0MiB (33.6MB), run=1528-1598msec rand-rw: (groupid=0, jobs=1): err= 0: pid=182717: Fri Sep 25 23:57:30 2026 read: IOPS=1, BW=7058KiB/s (7227kB/s)(12.0MiB/1741msec) clat (msec): min=119, max=1193, avg=561.36, stdev=561.78 lat (msec): min=119, max=1193, avg=561.36, stdev=561.78 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 120], 10.00th=[ 120], 20.00th=[ 120], | 30.00th=[ 120], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min=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%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=12.24%, ctx=66, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=182718: Fri Sep 25 23:57:30 2026 read: IOPS=0, BW=3546KiB/s (3631kB/s)(4096KiB/1155msec) clat (nsec): min=330468k, max=330468k, avg=330468293.00, stdev= 0.00 lat (nsec): min=330470k, max=330470k, avg=330470462.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 330], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 5610, max= 5610, per=59.62%, avg=5610.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=7093KiB/s (7263kB/s)(8192KiB/1155msec); 0 zone resets clat (msec): min=334, max=475, avg=404.81, stdev=99.98 lat (msec): min=334, max=475, avg=405.08, stdev=99.94 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=[ 477], | 70.00th=[ 477], 80.00th=[ 477], 90.00th=[ 477], 95.00th=[ 477], | 99.00th=[ 477], 99.50th=[ 477], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=22.44%, ctx=59, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=182720: Fri Sep 25 23:57:30 2026 write: IOPS=1, BW=6547KiB/s (6704kB/s)(12.0MiB/1877msec); 0 zone resets clat (msec): min=71, max=1471, avg=621.45, stdev=746.69 lat (msec): min=72, max=1471, avg=621.75, stdev=746.67 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 72], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8192, max= 8192, per=46.93%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.33%, ctx=85, 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=182722: Fri Sep 25 23:57:30 2026 write: IOPS=2, BW=8434KiB/s (8636kB/s)(12.0MiB/1457msec); 0 zone resets clat (msec): min=154, max=1109, avg=483.23, stdev=542.89 lat (msec): min=155, max=1109, avg=483.47, stdev=542.79 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 186], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min=16031, max=16031, per=91.83%, avg=16031.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.07%, sys=13.87%, ctx=66, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=9411KiB/s (9637kB/s), 3546KiB/s-7058KiB/s (3631kB/s-7227kB/s), io=16.0MiB (16.8MB), run=1155-1741msec WRITE: bw=17.0MiB/s (17.9MB/s), 6547KiB/s-8434KiB/s (6704kB/s-8636kB/s), io=32.0MiB (33.6MB), run=1155-1877msec