== sanity test 398b: DIO and buffer IO race ============== 09:52:09 (1783518729) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.81139 s, 17.9 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=153032: Wed Jul 8 09:53:04 2026 read: IOPS=33, BW=132KiB/s (136kB/s)(5992KiB/45256msec) clat (usec): min=44, max=626627, avg=15918.29, stdev=18702.50 lat (usec): min=45, max=626628, avg=15920.53, stdev=18702.02 clat percentiles (usec): | 1.00th=[ 85], 5.00th=[ 412], 10.00th=[ 7177], 20.00th=[ 9110], | 30.00th=[ 10421], 40.00th=[ 11994], 50.00th=[ 13698], 60.00th=[ 15795], | 70.00th=[ 17957], 80.00th=[ 20841], 90.00th=[ 25822], 95.00th=[ 31851], | 99.00th=[ 51643], 99.50th=[ 68682], 99.90th=[129500], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 72, max= 216, per=25.42%, avg=133.20, stdev=28.02, samples=89 iops : min= 18, max= 54, avg=32.93, stdev= 6.94, samples=89 write: IOPS=34, BW=139KiB/s (142kB/s)(6296KiB/45256msec); 0 zone resets clat (usec): min=702, max=93683, avg=13570.15, stdev=11026.02 lat (usec): min=703, max=93683, avg=13571.50, stdev=11025.88 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 2278], 10.00th=[ 2835], 20.00th=[ 3490], | 30.00th=[ 5407], 40.00th=[ 8848], 50.00th=[11469], 60.00th=[13960], | 70.00th=[17171], 80.00th=[21365], 90.00th=[28181], 95.00th=[32900], | 99.00th=[49546], 99.50th=[58983], 99.90th=[84411], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 64, max= 240, per=25.57%, avg=140.11, stdev=37.05, samples=89 iops : min= 16, max= 60, avg=34.66, stdev= 9.26, samples=89 lat (usec) : 50=0.10%, 100=0.91%, 250=1.37%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.39% lat (msec) : 2=1.63%, 4=10.35%, 10=20.15%, 20=42.25%, 50=21.68% lat (msec) : 100=0.91%, 250=0.07%, 750=0.03% cpu : usr=0.13%, sys=25.30%, ctx=8884, 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=153033: Wed Jul 8 09:53:04 2026 read: IOPS=32, BW=130KiB/s (133kB/s)(5940KiB/45802msec) clat (usec): min=41, max=636025, avg=15932.50, stdev=18727.03 lat (usec): min=41, max=636026, avg=15933.37, stdev=18727.02 clat percentiles (usec): | 1.00th=[ 86], 5.00th=[ 4948], 10.00th=[ 7308], 20.00th=[ 8848], | 30.00th=[ 10290], 40.00th=[ 11863], 50.00th=[ 13960], 60.00th=[ 15926], | 70.00th=[ 18220], 80.00th=[ 21103], 90.00th=[ 25822], 95.00th=[ 30540], | 99.00th=[ 48497], 99.50th=[ 59507], 99.90th=[108528], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 15, max= 256, per=24.87%, avg=130.30, stdev=36.45, samples=90 iops : min= 3, max= 64, avg=32.21, stdev= 9.14, samples=90 write: IOPS=34, BW=139KiB/s (142kB/s)(6348KiB/45802msec); 0 zone resets clat (usec): min=693, max=94100, avg=13909.79, stdev=11594.75 lat (usec): min=694, max=94101, avg=13911.46, stdev=11595.39 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 2073], 10.00th=[ 2835], 20.00th=[ 3490], | 30.00th=[ 5145], 40.00th=[ 8979], 50.00th=[11469], 60.00th=[14222], | 70.00th=[17695], 80.00th=[21890], 90.00th=[28705], 95.00th=[34866], | 99.00th=[54789], 99.50th=[62129], 99.90th=[86508], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 48, max= 368, per=25.34%, avg=138.84, stdev=44.04, samples=90 iops : min= 12, max= 92, avg=34.34, stdev=11.04, samples=90 lat (usec) : 50=0.10%, 100=0.75%, 250=1.11%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.39% lat (msec) : 2=1.92%, 4=10.71%, 10=20.80%, 20=40.10%, 50=22.85% lat (msec) : 100=1.01%, 250=0.07%, 750=0.03% cpu : usr=0.15%, sys=25.49%, ctx=8791, 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=153034: Wed Jul 8 09:53:04 2026 read: IOPS=33, BW=134KiB/s (137kB/s)(6028KiB/44928msec) clat (usec): min=36, max=91531, avg=15392.47, stdev=8680.69 lat (usec): min=37, max=91533, avg=15393.31, stdev=8680.71 clat percentiles (usec): | 1.00th=[ 81], 5.00th=[ 5407], 10.00th=[ 7701], 20.00th=[ 9241], | 30.00th=[10290], 40.00th=[11600], 50.00th=[13829], 60.00th=[16057], | 70.00th=[18220], 80.00th=[21103], 90.00th=[25560], 95.00th=[30016], | 99.00th=[44303], 99.50th=[49546], 99.90th=[61604], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 71, max= 199, per=25.81%, avg=135.26, stdev=31.23, samples=88 iops : min= 17, max= 49, avg=33.44, stdev= 7.73, samples=88 write: IOPS=34, BW=139KiB/s (143kB/s)(6260KiB/44928msec); 0 zone resets clat (usec): min=806, max=648202, avg=13853.53, stdev=19784.40 lat (usec): min=807, max=648204, avg=13854.73, stdev=19784.40 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 2311], 10.00th=[ 2933], 20.00th=[ 3621], | 30.00th=[ 4948], 40.00th=[ 8291], 50.00th=[ 10945], 60.00th=[ 13566], | 70.00th=[ 16712], 80.00th=[ 21103], 90.00th=[ 27657], 95.00th=[ 33817], | 99.00th=[ 56361], 99.50th=[ 71828], 99.90th=[115868], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 63, max= 223, per=25.61%, avg=140.35, stdev=37.30, samples=88 iops : min= 15, max= 55, avg=34.72, stdev= 9.34, samples=88 lat (usec) : 50=0.16%, 100=0.81%, 250=1.11%, 1000=0.26% lat (msec) : 2=1.40%, 4=10.61%, 10=22.59%, 20=40.17%, 50=21.94% lat (msec) : 100=0.88%, 250=0.03%, 750=0.03% cpu : usr=0.13%, sys=25.82%, ctx=8786, 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=153035: Wed Jul 8 09:53:04 2026 read: IOPS=34, BW=136KiB/s (139kB/s)(6052KiB/44483msec) clat (usec): min=31, max=100923, avg=15074.32, stdev=9002.82 lat (usec): min=31, max=100924, avg=15075.19, stdev=9002.87 clat percentiles (usec): | 1.00th=[ 85], 5.00th=[ 194], 10.00th=[ 7308], 20.00th=[ 8848], | 30.00th=[ 10159], 40.00th=[ 11469], 50.00th=[ 13304], 60.00th=[ 15533], | 70.00th=[ 17957], 80.00th=[ 20579], 90.00th=[ 25035], 95.00th=[ 30540], | 99.00th=[ 46924], 99.50th=[ 51643], 99.90th=[ 74974], 99.95th=[101188], | 99.99th=[101188] bw ( KiB/s): min= 80, max= 208, per=26.13%, avg=136.92, stdev=29.62, samples=87 iops : min= 20, max= 52, avg=33.86, stdev= 7.40, samples=87 write: IOPS=35, BW=140KiB/s (144kB/s)(6236KiB/44483msec); 0 zone resets clat (usec): min=694, max=648921, avg=13859.15, stdev=19365.69 lat (usec): min=695, max=648922, avg=13860.18, stdev=19365.69 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 2245], 10.00th=[ 2868], 20.00th=[ 3621], | 30.00th=[ 5276], 40.00th=[ 8717], 50.00th=[ 11469], 60.00th=[ 13829], | 70.00th=[ 16909], 80.00th=[ 21627], 90.00th=[ 27132], 95.00th=[ 33162], | 99.00th=[ 48497], 99.50th=[ 63177], 99.90th=[ 80217], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 56, max= 230, per=25.79%, avg=141.32, stdev=35.38, samples=87 iops : min= 14, max= 57, avg=34.97, stdev= 8.78, samples=87 lat (usec) : 50=0.16%, 100=0.72%, 250=1.60%, 750=0.10%, 1000=0.39% lat (msec) : 2=1.73%, 4=9.86%, 10=22.30%, 20=40.76%, 50=21.61% lat (msec) : 100=0.72%, 250=0.03%, 750=0.03% cpu : usr=0.13%, sys=25.72%, ctx=8623, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=524KiB/s (537kB/s), 130KiB/s-136KiB/s (133kB/s-139kB/s), io=23.4MiB (24.6MB), run=44483-45802msec WRITE: bw=549KiB/s (562kB/s), 139KiB/s-140KiB/s (142kB/s-144kB/s), io=24.6MiB (25.7MB), run=44483-45802msec fio: pid=153027, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=153027: Wed Jul 8 09:53:28 2026 read: IOPS=17, BW=68.2KiB/s (69.8kB/s)(3616KiB/53033msec) clat (msec): min=3, max=682, avg=17.97, stdev=25.56 lat (msec): min=3, max=682, avg=17.97, stdev=25.56 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 10], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 20], 80.00th=[ 25], 90.00th=[ 34], 95.00th=[ 44], | 99.00th=[ 65], 99.50th=[ 81], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 168, per=22.20%, avg=68.37, stdev=33.46, samples=104 iops : min= 1, max= 42, avg=16.81, stdev= 8.43, samples=104 write: IOPS=17, BW=71.9KiB/s (73.6kB/s)(3812KiB/53033msec); 0 zone resets clat (msec): min=14, max=171, avg=38.42, stdev=17.56 lat (msec): min=14, max=171, avg=38.42, stdev=17.56 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 25], | 30.00th=[ 28], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 40], | 70.00th=[ 44], 80.00th=[ 50], 90.00th=[ 58], 95.00th=[ 68], | 99.00th=[ 101], 99.50th=[ 124], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 31, max= 168, per=22.43%, avg=72.22, stdev=27.92, samples=104 iops : min= 7, max= 42, avg=17.77, stdev= 7.11, samples=104 lat (msec) : 4=0.75%, 10=15.77%, 20=22.07%, 50=50.27%, 100=10.55% lat (msec) : 250=0.48%, 750=0.05% cpu : usr=0.08%, sys=9.05%, ctx=3392, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=905,953,0,0 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=153028: Wed Jul 8 09:53:28 2026 read: IOPS=21, BW=84.6KiB/s (86.6kB/s)(5940KiB/70204msec) clat (msec): min=2, max=695, avg=14.48, stdev=21.54 lat (msec): min=2, max=695, avg=14.48, stdev=21.54 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 14], 80.00th=[ 21], 90.00th=[ 30], 95.00th=[ 39], | 99.00th=[ 68], 99.50th=[ 80], 99.90th=[ 91], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 15, max= 223, per=27.53%, avg=84.78, stdev=47.04, samples=138 iops : min= 3, max= 55, avg=20.96, stdev=11.85, samples=138 write: IOPS=22, BW=90.4KiB/s (92.6kB/s)(6348KiB/70204msec); 0 zone resets clat (msec): min=11, max=132, avg=30.57, stdev=15.45 lat (msec): min=11, max=132, avg=30.57, stdev=15.45 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 42], 90.00th=[ 51], 95.00th=[ 59], | 99.00th=[ 87], 99.50th=[ 101], 99.90th=[ 129], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 15, max= 176, per=27.98%, avg=90.10, stdev=40.91, samples=138 iops : min= 3, max= 44, avg=22.29, stdev=10.36, samples=138 lat (msec) : 4=2.80%, 10=21.65%, 20=28.32%, 50=40.36%, 100=6.61% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.10%, sys=9.48%, ctx=6201, 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=153029: Wed Jul 8 09:53:28 2026 read: IOPS=21, BW=86.3KiB/s (88.4kB/s)(6028KiB/69834msec) clat (usec): min=3034, max=97369, avg=13519.92, stdev=11201.11 lat (usec): min=3035, max=97370, avg=13520.87, stdev=11201.07 clat percentiles (usec): | 1.00th=[ 3458], 5.00th=[ 4047], 10.00th=[ 4686], 20.00th=[ 6194], | 30.00th=[ 7832], 40.00th=[ 8717], 50.00th=[10028], 60.00th=[11469], | 70.00th=[13435], 80.00th=[18220], 90.00th=[26870], 95.00th=[35390], | 99.00th=[55313], 99.50th=[76022], 99.90th=[89654], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 23, max= 216, per=28.22%, avg=86.92, stdev=44.20, samples=138 iops : min= 5, max= 54, avg=21.49, stdev=11.17, samples=138 write: IOPS=22, BW=89.6KiB/s (91.8kB/s)(6260KiB/69834msec); 0 zone resets clat (msec): min=11, max=699, avg=31.48, stdev=23.54 lat (msec): min=11, max=699, avg=31.49, stdev=23.54 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 53], 95.00th=[ 61], | 99.00th=[ 92], 99.50th=[ 118], 99.90th=[ 171], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 31, max= 168, per=28.00%, avg=90.17, stdev=41.64, samples=138 iops : min= 7, max= 42, avg=22.30, stdev=10.55, samples=138 lat (msec) : 4=2.38%, 10=21.88%, 20=30.01%, 50=38.74%, 100=6.67% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.10%, sys=9.60%, ctx=6188, 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=153030: Wed Jul 8 09:53:28 2026 read: IOPS=21, BW=86.8KiB/s (88.9kB/s)(6052KiB/69733msec) clat (msec): min=2, max=142, avg=13.69, stdev=12.24 lat (msec): min=2, max=142, avg=13.69, stdev=12.24 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 14], 80.00th=[ 20], 90.00th=[ 28], 95.00th=[ 37], | 99.00th=[ 63], 99.50th=[ 80], 99.90th=[ 120], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 7, max= 240, per=28.18%, avg=86.80, stdev=47.72, samples=137 iops : min= 1, max= 60, avg=21.46, stdev=12.05, samples=137 write: IOPS=22, BW=89.4KiB/s (91.6kB/s)(6236KiB/69733msec); 0 zone resets clat (msec): min=12, max=702, avg=31.33, stdev=23.13 lat (msec): min=12, max=702, avg=31.33, stdev=23.13 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 53], 95.00th=[ 62], | 99.00th=[ 86], 99.50th=[ 100], 99.90th=[ 123], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 15, max= 176, per=27.81%, avg=89.55, stdev=41.17, samples=137 iops : min= 3, max= 44, avg=22.15, stdev=10.41, samples=137 lat (msec) : 4=2.60%, 10=22.82%, 20=28.65%, 50=38.80%, 100=6.80% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.09%, sys=9.51%, ctx=6163, 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=308KiB/s (316kB/s), 68.2KiB/s-86.8KiB/s (69.8kB/s-88.9kB/s), io=21.1MiB (22.2MB), run=53033-70204msec WRITE: bw=323KiB/s (330kB/s), 71.9KiB/s-90.4KiB/s (73.6kB/s-92.6kB/s), io=22.1MiB (23.2MB), run=53033-70204msec 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=153059: Wed Jul 8 09:53:46 2026 read: IOPS=31, BW=500KiB/s (512kB/s)(5920KiB/11844msec) clat (usec): min=43, max=61451, avg=16282.02, stdev=10496.04 lat (usec): min=44, max=61452, avg=16282.79, stdev=10496.08 clat percentiles (usec): | 1.00th=[ 80], 5.00th=[ 109], 10.00th=[ 127], 20.00th=[10159], | 30.00th=[11469], 40.00th=[13304], 50.00th=[15270], 60.00th=[17957], | 70.00th=[20579], 80.00th=[22676], 90.00th=[26870], 95.00th=[32375], | 99.00th=[58459], 99.50th=[60031], 99.90th=[61604], 99.95th=[61604], | 99.99th=[61604] bw ( KiB/s): min= 255, max= 894, per=25.59%, avg=491.13, stdev=138.26, samples=23 iops : min= 15, max= 55, avg=30.22, stdev= 8.67, samples=23 write: IOPS=33, BW=538KiB/s (551kB/s)(6368KiB/11844msec); 0 zone resets clat (usec): min=1488, max=92240, avg=14394.12, stdev=10625.71 lat (usec): min=1490, max=92242, avg=14395.80, stdev=10625.77 clat percentiles (usec): | 1.00th=[ 2114], 5.00th=[ 3621], 10.00th=[ 4359], 20.00th=[ 5211], | 30.00th=[ 6849], 40.00th=[ 9896], 50.00th=[11994], 60.00th=[14484], | 70.00th=[17171], 80.00th=[22152], 90.00th=[28181], 95.00th=[33162], | 99.00th=[45876], 99.50th=[64226], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 256, max= 736, per=26.52%, avg=535.39, stdev=114.02, samples=23 iops : min= 16, max= 46, avg=33.00, stdev= 7.09, samples=23 lat (usec) : 50=0.13%, 100=1.43%, 250=4.82%, 1000=0.13% lat (msec) : 2=0.39%, 4=3.26%, 10=19.66%, 20=41.80%, 50=27.21% lat (msec) : 100=1.17% cpu : usr=0.16%, sys=30.71%, ctx=2472, majf=0, minf=19 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=153061: Wed Jul 8 09:53:46 2026 read: IOPS=28, BW=461KiB/s (472kB/s)(5744KiB/12471msec) clat (usec): min=45, max=86653, avg=17205.44, stdev=11138.96 lat (usec): min=45, max=86653, avg=17206.26, stdev=11139.00 clat percentiles (usec): | 1.00th=[ 71], 5.00th=[ 106], 10.00th=[ 143], 20.00th=[10159], | 30.00th=[11731], 40.00th=[14222], 50.00th=[16188], 60.00th=[18482], | 70.00th=[20841], 80.00th=[23462], 90.00th=[30016], 95.00th=[36439], | 99.00th=[53740], 99.50th=[60031], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 58, max= 672, per=23.60%, avg=452.83, stdev=133.13, samples=24 iops : min= 3, max= 42, avg=27.79, stdev= 8.29, samples=24 write: IOPS=32, BW=525KiB/s (537kB/s)(6544KiB/12471msec); 0 zone resets clat (usec): min=1027, max=88301, avg=15209.23, stdev=11622.16 lat (usec): min=1028, max=88301, avg=15210.72, stdev=11622.06 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 3392], 10.00th=[ 4113], 20.00th=[ 5080], | 30.00th=[ 6652], 40.00th=[ 9896], 50.00th=[12649], 60.00th=[15533], | 70.00th=[19268], 80.00th=[22938], 90.00th=[29492], 95.00th=[38011], | 99.00th=[51643], 99.50th=[59507], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 287, max= 768, per=25.10%, avg=506.83, stdev=145.82, samples=24 iops : min= 17, max= 48, avg=31.17, stdev= 9.24, samples=24 lat (usec) : 50=0.13%, 100=1.95%, 250=2.99%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=0.91%, 4=4.04%, 10=20.18%, 20=38.54%, 50=29.43% lat (msec) : 100=1.43% cpu : usr=0.11%, sys=29.42%, ctx=2556, 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=153063: Wed Jul 8 09:53:46 2026 read: IOPS=31, BW=501KiB/s (513kB/s)(6256KiB/12478msec) clat (usec): min=46, max=74237, avg=17385.13, stdev=10735.16 lat (usec): min=47, max=74238, avg=17385.95, stdev=10735.16 clat percentiles (usec): | 1.00th=[ 86], 5.00th=[ 113], 10.00th=[ 143], 20.00th=[10552], | 30.00th=[12387], 40.00th=[14091], 50.00th=[16712], 60.00th=[19006], | 70.00th=[21627], 80.00th=[23987], 90.00th=[28443], 95.00th=[34866], | 99.00th=[54789], 99.50th=[58983], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 192, max= 704, per=26.24%, avg=503.54, stdev=112.89, samples=24 iops : min= 12, max= 44, avg=30.96, stdev= 7.18, samples=24 write: IOPS=30, BW=483KiB/s (495kB/s)(6032KiB/12478msec); 0 zone resets clat (usec): min=1432, max=100848, avg=15000.67, stdev=11496.24 lat (usec): min=1444, max=100851, avg=15002.29, stdev=11496.29 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 13], 60.00th=[ 16], | 70.00th=[ 19], 80.00th=[ 23], 90.00th=[ 29], 95.00th=[ 36], | 99.00th=[ 56], 99.50th=[ 74], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 223, max= 702, per=23.59%, avg=476.29, stdev=141.60, samples=24 iops : min= 13, max= 43, avg=29.25, stdev= 8.68, samples=24 lat (usec) : 50=0.13%, 100=1.56%, 250=4.04%, 500=0.13% lat (msec) : 2=0.13%, 4=3.52%, 10=19.53%, 20=39.84%, 50=29.82% lat (msec) : 100=1.17%, 250=0.13% cpu : usr=0.14%, sys=29.78%, ctx=2661, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=153064: Wed Jul 8 09:53:46 2026 read: IOPS=31, BW=499KiB/s (511kB/s)(6032KiB/12086msec) clat (usec): min=38, max=89182, avg=16741.17, stdev=10767.34 lat (usec): min=38, max=89183, avg=16742.08, stdev=10767.41 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 101], 10.00th=[ 141], 20.00th=[10028], | 30.00th=[11863], 40.00th=[13829], 50.00th=[16057], 60.00th=[17695], | 70.00th=[20317], 80.00th=[23725], 90.00th=[28443], 95.00th=[34866], | 99.00th=[51643], 99.50th=[55837], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 256, max= 665, per=25.34%, avg=486.26, stdev=115.29, samples=23 iops : min= 16, max= 41, avg=29.91, stdev= 7.28, samples=23 write: IOPS=32, BW=518KiB/s (530kB/s)(6256KiB/12086msec); 0 zone resets clat (usec): min=1036, max=87771, avg=14553.21, stdev=10905.55 lat (usec): min=1036, max=87773, avg=14554.90, stdev=10905.81 clat percentiles (usec): | 1.00th=[ 1352], 5.00th=[ 3458], 10.00th=[ 4293], 20.00th=[ 5276], | 30.00th=[ 6521], 40.00th=[ 9503], 50.00th=[12125], 60.00th=[14615], | 70.00th=[17695], 80.00th=[22676], 90.00th=[28705], 95.00th=[34341], | 99.00th=[49546], 99.50th=[66323], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 192, max= 702, per=25.23%, avg=509.48, stdev=122.75, samples=23 iops : min= 12, max= 43, avg=31.35, stdev= 7.57, samples=23 lat (usec) : 50=0.39%, 100=1.69%, 250=3.65%, 500=0.13% lat (msec) : 2=1.04%, 4=2.73%, 10=21.09%, 20=40.23%, 50=27.86% lat (msec) : 100=1.17% cpu : usr=0.13%, sys=29.68%, ctx=2535, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1920KiB/s (1966kB/s), 461KiB/s-501KiB/s (472kB/s-513kB/s), io=23.4MiB (24.5MB), run=11844-12478msec WRITE: bw=2020KiB/s (2068kB/s), 483KiB/s-538KiB/s (495kB/s-551kB/s), io=24.6MiB (25.8MB), run=11844-12478msec fio: pid=153062, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=153058: Wed Jul 8 09:53:52 2026 read: IOPS=20, BW=326KiB/s (334kB/s)(5920KiB/18175msec) clat (msec): min=2, max=110, avg=15.14, stdev=14.31 lat (msec): min=2, max=110, avg=15.14, stdev=14.31 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 6], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 10], 60.00th=[ 12], | 70.00th=[ 16], 80.00th=[ 23], 90.00th=[ 35], 95.00th=[ 42], | 99.00th=[ 79], 99.50th=[ 82], 99.90th=[ 110], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 125, max= 800, per=26.54%, avg=322.17, stdev=180.09, samples=36 iops : min= 7, max= 50, avg=19.69, stdev=11.50, samples=36 write: IOPS=21, BW=350KiB/s (359kB/s)(6368KiB/18175msec); 0 zone resets clat (msec): min=11, max=108, avg=31.50, stdev=17.15 lat (msec): min=11, max=108, avg=31.50, stdev=17.15 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 55], 95.00th=[ 64], | 99.00th=[ 97], 99.50th=[ 107], 99.90th=[ 109], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 159, max= 672, per=27.05%, avg=348.19, stdev=177.53, samples=36 iops : min= 9, max= 42, avg=21.31, stdev=11.40, samples=36 lat (msec) : 4=2.73%, 10=21.35%, 20=26.43%, 50=41.15%, 100=7.81% lat (msec) : 250=0.52% cpu : usr=0.11%, sys=10.60%, ctx=1660, 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=153060: Wed Jul 8 09:53:52 2026 read: IOPS=19, BW=319KiB/s (326kB/s)(5744KiB/18025msec) clat (usec): min=3598, max=89109, avg=14105.20, stdev=12728.44 lat (usec): min=3599, max=89111, avg=14106.15, stdev=12728.38 clat percentiles (usec): | 1.00th=[ 3687], 5.00th=[ 4146], 10.00th=[ 4490], 20.00th=[ 5538], | 30.00th=[ 7111], 40.00th=[ 8586], 50.00th=[ 9765], 60.00th=[11469], | 70.00th=[14222], 80.00th=[19530], 90.00th=[27395], 95.00th=[43254], | 99.00th=[62129], 99.50th=[76022], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 58, max= 768, per=26.21%, avg=318.20, stdev=178.14, samples=35 iops : min= 3, max= 48, avg=19.43, stdev=11.38, samples=35 write: IOPS=22, BW=363KiB/s (372kB/s)(6544KiB/18025msec); 0 zone resets clat (msec): min=12, max=107, avg=31.53, stdev=15.93 lat (msec): min=12, max=107, avg=31.53, stdev=15.93 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 17], 10.00th=[ 18], 20.00th=[ 20], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 44], 90.00th=[ 52], 95.00th=[ 61], | 99.00th=[ 89], 99.50th=[ 99], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 128, max= 736, per=27.65%, avg=355.80, stdev=159.29, samples=35 iops : min= 8, max= 46, avg=21.80, stdev=10.20, samples=35 lat (msec) : 4=1.43%, 10=22.79%, 20=26.56%, 50=41.54%, 100=7.42% lat (msec) : 250=0.26% cpu : usr=0.09%, sys=10.86%, ctx=1636, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=153062: Wed Jul 8 09:53:52 2026 read: IOPS=18, BW=294KiB/s (301kB/s)(4384KiB/14902msec) clat (usec): min=3525, max=96461, avg=18225.88, stdev=15742.42 lat (usec): min=3526, max=96462, avg=18226.88, stdev=15742.30 clat percentiles (usec): | 1.00th=[ 3687], 5.00th=[ 4621], 10.00th=[ 5276], 20.00th=[ 6390], | 30.00th=[ 8979], 40.00th=[10683], 50.00th=[12387], 60.00th=[15008], | 70.00th=[19268], 80.00th=[25822], 90.00th=[40633], 95.00th=[50070], | 99.00th=[78119], 99.50th=[80217], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 125, max= 768, per=23.88%, avg=289.93, stdev=161.23, samples=29 iops : min= 7, max= 48, avg=17.55, stdev=10.31, samples=29 write: IOPS=17, BW=285KiB/s (291kB/s)(4240KiB/14902msec); 0 zone resets clat (msec): min=14, max=110, avg=37.07, stdev=16.59 lat (msec): min=14, max=110, avg=37.08, stdev=16.59 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 19], 10.00th=[ 20], 20.00th=[ 23], | 30.00th=[ 26], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 38], | 70.00th=[ 43], 80.00th=[ 50], 90.00th=[ 59], 95.00th=[ 70], | 99.00th=[ 87], 99.50th=[ 96], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 95, max= 544, per=21.56%, avg=277.52, stdev=110.26, samples=29 iops : min= 5, max= 34, avg=16.79, stdev= 7.10, samples=29 lat (msec) : 4=0.56%, 10=17.96%, 20=22.78%, 50=46.48%, 100=11.85% lat (msec) : 250=0.19% cpu : usr=0.08%, sys=10.91%, ctx=1118, majf=0, minf=19 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=275,265,0,0 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=153065: Wed Jul 8 09:53:52 2026 read: IOPS=20, BW=333KiB/s (341kB/s)(6032KiB/18097msec) clat (usec): min=3202, max=97376, avg=15417.67, stdev=14220.11 lat (usec): min=3203, max=97376, avg=15418.69, stdev=14220.00 clat percentiles (usec): | 1.00th=[ 3523], 5.00th=[ 4015], 10.00th=[ 4490], 20.00th=[ 5604], | 30.00th=[ 6915], 40.00th=[ 8586], 50.00th=[10028], 60.00th=[11731], | 70.00th=[15795], 80.00th=[23200], 90.00th=[35390], 95.00th=[45876], | 99.00th=[67634], 99.50th=[84411], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 128, max= 896, per=26.79%, avg=325.26, stdev=173.34, samples=35 iops : min= 8, max= 56, avg=19.86, stdev=11.07, samples=35 write: IOPS=21, BW=346KiB/s (354kB/s)(6256KiB/18097msec); 0 zone resets clat (msec): min=13, max=103, avg=31.15, stdev=16.42 lat (msec): min=13, max=103, avg=31.15, stdev=16.42 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 16], 10.00th=[ 17], 20.00th=[ 19], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 53], 95.00th=[ 62], | 99.00th=[ 96], 99.50th=[ 104], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 127, max= 704, per=26.40%, avg=339.77, stdev=175.39, samples=35 iops : min= 7, max= 44, avg=20.77, stdev=11.26, samples=35 lat (msec) : 4=2.21%, 10=22.66%, 20=26.04%, 50=41.41%, 100=7.42% lat (msec) : 250=0.26% cpu : usr=0.06%, sys=10.66%, ctx=1636, 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=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=1215KiB/s (1244kB/s), 294KiB/s-333KiB/s (301kB/s-341kB/s), io=21.6MiB (22.6MB), run=14902-18175msec WRITE: bw=1288KiB/s (1319kB/s), 285KiB/s-363KiB/s (291kB/s-372kB/s), io=22.9MiB (23.0MB), run=14902-18175msec 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=153073: Wed Jul 8 09:54:00 2026 read: IOPS=3, BW=3475KiB/s (3558kB/s)(7168KiB/2063msec) clat (usec): min=570, max=202922, avg=132090.63, stdev=64935.58 lat (usec): min=571, max=202923, avg=132091.95, stdev=64935.73 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[119014], | 30.00th=[131597], 40.00th=[131597], 50.00th=[132645], 60.00th=[164627], | 70.00th=[164627], 80.00th=[173016], 90.00th=[202376], 95.00th=[202376], | 99.00th=[202376], 99.50th=[202376], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 4096, max= 5111, per=61.12%, avg=4603.50, stdev=717.71, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2482KiB/s (2541kB/s)(5120KiB/2063msec); 0 zone resets clat (msec): min=148, max=340, avg=223.08, stdev=82.38 lat (msec): min=148, max=340, avg=223.13, stdev=82.38 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 201], 60.00th=[ 201], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 2048, max= 6144, per=38.84%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 lat (usec) : 750=8.33% lat (msec) : 250=75.00%, 500=16.67% cpu : usr=0.00%, sys=51.21%, ctx=944, 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=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=153074: Wed Jul 8 09:54:00 2026 read: IOPS=0, BW=753KiB/s (771kB/s)(2048KiB/2719msec) clat (msec): min=86, max=300, avg=193.66, stdev=151.71 lat (msec): min=86, max=300, avg=193.66, stdev=151.71 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 87], 60.00th=[ 300], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 300], 95.00th=[ 300], | 99.00th=[ 300], 99.50th=[ 300], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 1703, max= 2035, per=24.81%, avg=1869.00, stdev=234.76, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3766KiB/s (3856kB/s)(10.0MiB/2719msec); 0 zone resets clat (msec): min=138, max=543, avg=232.19, stdev=116.49 lat (msec): min=138, max=544, avg=232.28, stdev=116.54 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 161], | 30.00th=[ 171], 40.00th=[ 186], 50.00th=[ 197], 60.00th=[ 205], | 70.00th=[ 220], 80.00th=[ 224], 90.00th=[ 284], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 2035, max= 6144, per=43.61%, avg=4598.50, stdev=1959.98, samples=4 iops : min= 1, max= 6, avg= 4.00, stdev= 2.16, samples=4 lat (msec) : 100=8.33%, 250=66.67%, 500=16.67%, 750=8.33% cpu : usr=0.07%, sys=44.67%, ctx=695, 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=153075: Wed Jul 8 09:54:00 2026 read: IOPS=2, BW=2885KiB/s (2954kB/s)(6144KiB/2130msec) clat (usec): min=482, max=209528, avg=110671.75, stdev=85284.28 lat (usec): min=483, max=209530, avg=110672.61, stdev=85284.39 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 482], 10.00th=[ 482], 20.00th=[ 21627], | 30.00th=[ 21627], 40.00th=[104334], 50.00th=[104334], 60.00th=[145753], | 70.00th=[183501], 80.00th=[183501], 90.00th=[208667], 95.00th=[208667], | 99.00th=[208667], 99.50th=[208667], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 2035, max= 4096, per=45.26%, avg=3409.00, stdev=1189.92, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=2, BW=2885KiB/s (2954kB/s)(6144KiB/2130msec); 0 zone resets clat (msec): min=173, max=373, avg=233.91, stdev=75.00 lat (msec): min=173, max=373, avg=233.98, stdev=75.01 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 222], | 70.00th=[ 257], 80.00th=[ 257], 90.00th=[ 376], 95.00th=[ 376], | 99.00th=[ 376], 99.50th=[ 376], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 2035, max= 4096, per=27.45%, avg=2895.00, stdev=1025.58, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 lat (usec) : 500=8.33% lat (msec) : 50=8.33%, 250=66.67%, 500=16.67% cpu : usr=0.05%, sys=46.45%, ctx=320, 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=153076: Wed Jul 8 09:54:00 2026 read: IOPS=2, BW=2128KiB/s (2179kB/s)(5120KiB/2406msec) clat (usec): min=343, max=295773, avg=84036.59, stdev=129715.85 lat (usec): min=343, max=295774, avg=84037.29, stdev=129716.05 clat percentiles (usec): | 1.00th=[ 343], 5.00th=[ 343], 10.00th=[ 343], 20.00th=[ 343], | 30.00th=[ 490], 40.00th=[ 490], 50.00th=[ 562], 60.00th=[ 562], | 70.00th=[123208], 80.00th=[123208], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2979KiB/s (3051kB/s)(7168KiB/2406msec); 0 zone resets clat (msec): min=158, max=396, avg=276.25, stdev=98.74 lat (msec): min=159, max=396, avg=276.32, stdev=98.73 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 171], | 30.00th=[ 213], 40.00th=[ 213], 50.00th=[ 271], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 368], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 1700, max= 4096, per=23.42%, avg=2469.75, stdev=1096.07, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (usec) : 500=16.67%, 750=8.33% lat (msec) : 250=33.33%, 500=41.67% cpu : usr=0.04%, sys=38.42%, ctx=390, 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=7532KiB/s (7713kB/s), 753KiB/s-3475KiB/s (771kB/s-3558kB/s), io=20.0MiB (20.0MB), run=2063-2719msec WRITE: bw=10.3MiB/s (10.8MB/s), 2482KiB/s-3766KiB/s (2541kB/s-3856kB/s), io=28.0MiB (29.4MB), run=2063-2719msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153078: Wed Jul 8 09:54:00 2026 read: IOPS=2, BW=2920KiB/s (2990kB/s)(7168KiB/2455msec) clat (msec): min=59, max=175, avg=134.45, stdev=45.75 lat (msec): min=59, max=175, avg=134.45, stdev=45.75 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 60], 10.00th=[ 60], 20.00th=[ 81], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 157], 60.00th=[ 163], | 70.00th=[ 163], 80.00th=[ 167], 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= 1917, max= 5251, per=38.73%, avg=2782.25, stdev=1646.35, samples=4 iops : min= 1, max= 5, avg= 2.00, stdev= 2.00, samples=4 write: IOPS=2, BW=2086KiB/s (2136kB/s)(5120KiB/2455msec); 0 zone resets clat (msec): min=64, max=422, avg=290.44, stdev=145.32 lat (msec): min=64, max=422, avg=290.52, stdev=145.32 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 65], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 1946, max= 3835, per=25.84%, avg=2598.67, stdev=1071.25, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=50.00%, 500=25.00% cpu : usr=0.00%, sys=17.07%, ctx=237, 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=153079: Wed Jul 8 09:54:00 2026 read: IOPS=0, BW=721KiB/s (739kB/s)(2048KiB/2839msec) clat (msec): min=85, max=219, avg=152.49, stdev=95.30 lat (msec): min=85, max=219, avg=152.49, stdev=95.30 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 86], 60.00th=[ 220], | 70.00th=[ 220], 80.00th=[ 220], 90.00th=[ 220], 95.00th=[ 220], | 99.00th=[ 220], 99.50th=[ 220], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 1744, max= 1988, per=25.98%, avg=1866.00, stdev=172.53, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3607KiB/s (3693kB/s)(10.0MiB/2839msec); 0 zone resets clat (msec): min=83, max=533, avg=239.65, stdev=168.66 lat (msec): min=83, max=533, avg=239.72, stdev=168.66 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 103], | 30.00th=[ 117], 40.00th=[ 132], 50.00th=[ 161], 60.00th=[ 161], | 70.00th=[ 213], 80.00th=[ 447], 90.00th=[ 451], 95.00th=[ 535], | 99.00th=[ 535], 99.50th=[ 535], 99.90th=[ 535], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 1917, max= 7953, per=39.40%, avg=3961.75, stdev=2838.96, samples=4 iops : min= 1, max= 7, avg= 3.00, stdev= 2.83, samples=4 lat (msec) : 100=16.67%, 250=58.33%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=19.20%, ctx=143, 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=153080: Wed Jul 8 09:54:00 2026 read: IOPS=2, BW=2192KiB/s (2245kB/s)(6144KiB/2803msec) clat (msec): min=58, max=487, avg=173.37, stdev=160.20 lat (msec): min=58, max=487, avg=173.37, stdev=160.20 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 106], 50.00th=[ 106], 60.00th=[ 108], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 1917, max= 5965, per=45.61%, avg=3276.00, stdev=2328.79, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=2, BW=2192KiB/s (2245kB/s)(6144KiB/2803msec); 0 zone resets clat (msec): min=63, max=482, avg=283.85, stdev=167.93 lat (msec): min=63, max=483, avg=283.92, stdev=167.94 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 64], 10.00th=[ 64], 20.00th=[ 125], | 30.00th=[ 125], 40.00th=[ 259], 50.00th=[ 259], 60.00th=[ 334], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 1753, max= 4031, per=32.35%, avg=3253.33, stdev=1299.62, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 lat (msec) : 100=25.00%, 250=33.33%, 500=41.67% cpu : usr=0.04%, sys=14.45%, ctx=363, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153081: Wed Jul 8 09:54:00 2026 read: IOPS=1, BW=1796KiB/s (1839kB/s)(5120KiB/2851msec) clat (msec): min=20, max=563, avg=168.18, stdev=224.31 lat (msec): min=20, max=563, avg=168.19, stdev=224.31 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 21], 10.00th=[ 21], 20.00th=[ 21], | 30.00th=[ 60], 40.00th=[ 60], 50.00th=[ 74], 60.00th=[ 74], | 70.00th=[ 125], 80.00th=[ 125], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1946, max= 5965, per=55.07%, avg=3955.50, stdev=2841.86, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2514KiB/s (2575kB/s)(7168KiB/2851msec); 0 zone resets clat (msec): min=70, max=581, avg=285.12, stdev=232.36 lat (msec): min=70, max=581, avg=285.18, stdev=232.36 clat percentiles (msec): | 1.00th=[ 71], 5.00th=[ 71], 10.00th=[ 71], 20.00th=[ 80], | 30.00th=[ 84], 40.00th=[ 84], 50.00th=[ 186], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 558], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1917, max= 4031, per=24.57%, avg=2470.50, stdev=1040.74, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 50=8.33%, 100=41.67%, 250=16.67%, 500=8.33%, 750=25.00% cpu : usr=0.07%, sys=14.21%, ctx=120, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7183KiB/s (7356kB/s), 721KiB/s-2920KiB/s (739kB/s-2990kB/s), io=20.0MiB (20.0MB), run=2455-2851msec WRITE: bw=9.82MiB/s (10.3MB/s), 2086KiB/s-3607KiB/s (2136kB/s-3693kB/s), io=28.0MiB (29.4MB), run=2455-2851msec 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=153087: Wed Jul 8 09:54:09 2026 read: IOPS=1, BW=5078KiB/s (5200kB/s)(12.0MiB/2420msec) clat (msec): min=303, max=1479, avg=788.49, stdev=614.59 lat (msec): min=303, max=1479, avg=788.50, stdev=614.59 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.88%, ctx=61, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=153088: Wed Jul 8 09:54:09 2026 read: IOPS=0, BW=1657KiB/s (1697kB/s)(4096KiB/2472msec) clat (nsec): min=167180k, max=167180k, avg=167179563.00, stdev= 0.00 lat (nsec): min=167182k, max=167182k, avg=167182203.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 167], 60.00th=[ 167], | 70.00th=[ 167], 80.00th=[ 167], 90.00th=[ 167], 95.00th=[ 167], | 99.00th=[ 167], 99.50th=[ 167], 99.90th=[ 167], 99.95th=[ 167], | 99.99th=[ 167] bw ( KiB/s): min= 7742, max= 7742, per=100.00%, avg=7742.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3314KiB/s (3393kB/s)(8192KiB/2472msec); 0 zone resets clat (msec): min=855, max=1419, avg=1137.48, stdev=398.48 lat (msec): min=856, max=1419, avg=1137.81, stdev=398.49 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 8175, max= 8175, per=74.73%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=10.72%, 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=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=153089: Wed Jul 8 09:54:09 2026 write: IOPS=1, BW=4103KiB/s (4201kB/s)(12.0MiB/2995msec); 0 zone resets clat (msec): min=175, max=2184, avg=986.70, stdev=1058.56 lat (msec): min=176, max=2184, avg=987.10, stdev=1058.60 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 2198], 80.00th=[ 2198], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 8175, max= 8175, per=74.73%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=8.52%, ctx=70, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=153091: Wed Jul 8 09:54:09 2026 write: IOPS=1, BW=4969KiB/s (5088kB/s)(12.0MiB/2473msec); 0 zone resets clat (msec): min=135, max=1928, avg=813.96, stdev=972.52 lat (msec): min=135, max=1928, avg=814.26, stdev=972.51 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 136], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 1921], 80.00th=[ 1921], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7742, max= 8192, per=72.82%, avg=7967.00, stdev=318.20, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=9.91%, ctx=66, 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=6628KiB/s (6787kB/s), 1657KiB/s-5078KiB/s (1697kB/s-5200kB/s), io=16.0MiB (16.8MB), run=2420-2472msec WRITE: bw=10.7MiB/s (11.2MB/s), 3314KiB/s-4969KiB/s (3393kB/s-5088kB/s), io=32.0MiB (33.6MB), run=2472-2995msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153092: Wed Jul 8 09:54:09 2026 read: IOPS=1, BW=5707KiB/s (5844kB/s)(12.0MiB/2153msec) clat (msec): min=415, max=1290, avg=713.46, stdev=499.72 lat (msec): min=415, max=1290, avg=713.46, stdev=499.72 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 5793, max= 7876, per=100.00%, avg=6834.50, stdev=1472.90, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=33.97%, ctx=2722, 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=153093: Wed Jul 8 09:54:09 2026 read: IOPS=0, BW=1638KiB/s (1677kB/s)(4096KiB/2501msec) clat (nsec): min=424727k, max=424727k, avg=424727209.00, stdev= 0.00 lat (nsec): min=424729k, max=424729k, avg=424728734.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 5712, max= 5712, per=87.21%, avg=5712.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3275KiB/s (3354kB/s)(8192KiB/2501msec); 0 zone resets clat (msec): min=621, max=1442, avg=1032.23, stdev=580.50 lat (msec): min=622, max=1443, avg=1032.61, stdev=580.58 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 1435], | 70.00th=[ 1435], 80.00th=[ 1435], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8192, max= 8192, per=74.41%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=14.48%, ctx=981, 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=153094: Wed Jul 8 09:54:09 2026 write: IOPS=1, BW=4129KiB/s (4228kB/s)(12.0MiB/2976msec); 0 zone resets clat (msec): min=80, max=2670, avg=985.71, stdev=1460.55 lat (msec): min=81, max=2671, avg=986.13, stdev=1460.70 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 82], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 205], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 8192, max= 8192, per=74.41%, 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%, 250=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=8.44%, ctx=50, 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=153095: Wed Jul 8 09:54:09 2026 write: IOPS=1, BW=4905KiB/s (5023kB/s)(12.0MiB/2505msec); 0 zone resets clat (msec): min=340, max=1258, avg=825.45, stdev=461.03 lat (msec): min=341, max=1258, avg=825.77, stdev=461.04 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 342], 10.00th=[ 342], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 5834, max= 7876, per=62.26%, avg=6855.00, stdev=1443.91, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=11.46%, ctx=66, 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=6551KiB/s (6708kB/s), 1638KiB/s-5707KiB/s (1677kB/s-5844kB/s), io=16.0MiB (16.8MB), run=2153-2501msec WRITE: bw=10.8MiB/s (11.3MB/s), 3275KiB/s-4905KiB/s (3354kB/s-5023kB/s), io=32.0MiB (33.6MB), run=2501-2976msec