== sanity test 398b: DIO and buffer IO race ============== 02:58:12 (1769759892) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.7191 s, 18.5 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=153833: Fri Jan 30 02:59:14 2026 read: IOPS=27, BW=111KiB/s (114kB/s)(5992KiB/53770msec) clat (usec): min=276, max=722138, avg=19787.62, stdev=20559.24 lat (usec): min=277, max=722139, avg=19788.64, stdev=20559.29 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 8291], 10.00th=[ 9503], 20.00th=[ 11600], | 30.00th=[ 13435], 40.00th=[ 15533], 50.00th=[ 17695], 60.00th=[ 20055], | 70.00th=[ 22414], 80.00th=[ 25822], 90.00th=[ 31065], 95.00th=[ 37487], | 99.00th=[ 50594], 99.50th=[ 58459], 99.90th=[ 93848], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 48, max= 182, per=25.56%, avg=112.47, stdev=26.57, samples=106 iops : min= 12, max= 45, avg=27.73, stdev= 6.64, samples=106 write: IOPS=29, BW=117KiB/s (120kB/s)(6296KiB/53770msec); 0 zone resets clat (usec): min=927, max=76709, avg=15174.20, stdev=10988.33 lat (usec): min=928, max=76709, avg=15175.99, stdev=10988.01 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 2737], 10.00th=[ 3326], 20.00th=[ 4752], | 30.00th=[ 8094], 40.00th=[10814], 50.00th=[12911], 60.00th=[15401], | 70.00th=[19006], 80.00th=[23200], 90.00th=[30540], 95.00th=[36963], | 99.00th=[49021], 99.50th=[54789], 99.90th=[66323], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 32, max= 216, per=25.63%, avg=118.15, stdev=31.92, samples=106 iops : min= 8, max= 54, avg=29.14, stdev= 8.07, samples=106 lat (usec) : 500=0.26%, 750=0.55%, 1000=0.20% lat (msec) : 2=0.88%, 4=7.75%, 10=14.94%, 20=41.18%, 50=33.30% lat (msec) : 100=0.91%, 750=0.03% cpu : usr=0.12%, sys=25.69%, ctx=9848, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153835: Fri Jan 30 02:59:14 2026 read: IOPS=27, BW=110KiB/s (112kB/s)(5940KiB/54212msec) clat (usec): min=267, max=76858, avg=19251.97, stdev=9442.91 lat (usec): min=268, max=76859, avg=19252.96, stdev=9442.96 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 8717], 10.00th=[ 9765], 20.00th=[11469], | 30.00th=[13435], 40.00th=[15533], 50.00th=[17695], 60.00th=[19792], | 70.00th=[22152], 80.00th=[25560], 90.00th=[31327], 95.00th=[36963], | 99.00th=[50594], 99.50th=[56361], 99.90th=[70779], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 6, max= 168, per=24.88%, avg=109.47, stdev=30.72, samples=107 iops : min= 1, max= 42, avg=26.97, stdev= 7.71, samples=107 write: IOPS=29, BW=117KiB/s (120kB/s)(6348KiB/54212msec); 0 zone resets clat (usec): min=1029, max=718580, avg=16002.24, stdev=21104.14 lat (usec): min=1030, max=718581, avg=16003.93, stdev=21104.10 clat percentiles (usec): | 1.00th=[ 1926], 5.00th=[ 2835], 10.00th=[ 3326], 20.00th=[ 4490], | 30.00th=[ 7898], 40.00th=[ 10945], 50.00th=[ 13304], 60.00th=[ 16188], | 70.00th=[ 19530], 80.00th=[ 23987], 90.00th=[ 30802], 95.00th=[ 38011], | 99.00th=[ 55837], 99.50th=[ 61604], 99.90th=[ 74974], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 47, max= 191, per=25.53%, avg=117.71, stdev=31.04, samples=106 iops : min= 11, max= 47, avg=29.03, stdev= 7.77, samples=106 lat (usec) : 500=0.23%, 750=0.39%, 1000=0.13% lat (msec) : 2=0.75%, 4=8.30%, 10=14.42%, 20=41.67%, 50=32.81% lat (msec) : 100=1.27%, 750=0.03% cpu : usr=0.14%, sys=25.44%, ctx=9871, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153836: Fri Jan 30 02:59:14 2026 read: IOPS=27, BW=111KiB/s (113kB/s)(6028KiB/54459msec) clat (usec): min=239, max=84696, avg=19350.56, stdev=9387.86 lat (usec): min=240, max=84697, avg=19351.57, stdev=9387.90 clat percentiles (usec): | 1.00th=[ 578], 5.00th=[ 8455], 10.00th=[ 9765], 20.00th=[11731], | 30.00th=[13566], 40.00th=[15664], 50.00th=[17695], 60.00th=[20317], | 70.00th=[22414], 80.00th=[26084], 90.00th=[31065], 95.00th=[37487], | 99.00th=[48497], 99.50th=[56361], 99.90th=[70779], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 23, max= 168, per=25.37%, avg=111.62, stdev=27.36, samples=107 iops : min= 5, max= 42, avg=27.50, stdev= 6.89, samples=107 write: IOPS=28, BW=115KiB/s (118kB/s)(6260KiB/54459msec); 0 zone resets clat (usec): min=865, max=720380, avg=16017.61, stdev=21337.49 lat (usec): min=866, max=720383, avg=16018.87, stdev=21337.56 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 2769], 10.00th=[ 3228], 20.00th=[ 4424], | 30.00th=[ 7504], 40.00th=[ 10683], 50.00th=[ 12911], 60.00th=[ 15926], | 70.00th=[ 19792], 80.00th=[ 24249], 90.00th=[ 32113], 95.00th=[ 38011], | 99.00th=[ 54264], 99.50th=[ 63177], 99.90th=[ 74974], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 40, max= 199, per=25.10%, avg=115.69, stdev=33.21, samples=107 iops : min= 10, max= 49, avg=28.53, stdev= 8.30, samples=107 lat (usec) : 250=0.03%, 500=0.26%, 750=0.52%, 1000=0.23% lat (msec) : 2=0.88%, 4=7.94%, 10=14.32%, 20=40.49%, 50=34.21% lat (msec) : 100=1.07%, 750=0.03% cpu : usr=0.15%, sys=25.47%, ctx=9841, 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=153837: Fri Jan 30 02:59:14 2026 read: IOPS=27, BW=111KiB/s (114kB/s)(6052KiB/54438msec) clat (usec): min=256, max=75686, avg=19364.94, stdev=9956.01 lat (usec): min=257, max=75687, avg=19367.29, stdev=9955.16 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 8225], 10.00th=[ 9765], 20.00th=[11600], | 30.00th=[13173], 40.00th=[15270], 50.00th=[17695], 60.00th=[19792], | 70.00th=[22414], 80.00th=[25822], 90.00th=[31327], 95.00th=[38011], | 99.00th=[54264], 99.50th=[59507], 99.90th=[70779], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 31, max= 168, per=25.47%, avg=112.05, stdev=28.13, samples=107 iops : min= 7, max= 42, avg=27.62, stdev= 7.05, samples=107 write: IOPS=28, BW=115KiB/s (117kB/s)(6236KiB/54438msec); 0 zone resets clat (usec): min=1044, max=748976, avg=15967.55, stdev=21700.16 lat (usec): min=1044, max=748979, avg=15968.72, stdev=21700.24 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 2900], 10.00th=[ 3359], 20.00th=[ 4752], | 30.00th=[ 8160], 40.00th=[ 11076], 50.00th=[ 13173], 60.00th=[ 15926], | 70.00th=[ 19530], 80.00th=[ 23987], 90.00th=[ 30802], 95.00th=[ 36439], | 99.00th=[ 51119], 99.50th=[ 60031], 99.90th=[ 76022], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 39, max= 208, per=24.99%, avg=115.22, stdev=32.07, samples=107 iops : min= 9, max= 52, avg=28.42, stdev= 8.06, samples=107 lat (usec) : 500=0.23%, 750=0.81%, 1000=0.07% lat (msec) : 2=0.94%, 4=7.39%, 10=14.13%, 20=42.61%, 50=32.26% lat (msec) : 100=1.53%, 750=0.03% cpu : usr=0.14%, sys=25.48%, ctx=9733, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=441KiB/s (452kB/s), 110KiB/s-111KiB/s (112kB/s-114kB/s), io=23.4MiB (24.6MB), run=53770-54459msec WRITE: bw=462KiB/s (473kB/s), 115KiB/s-117KiB/s (117kB/s-120kB/s), io=24.6MiB (25.7MB), run=53770-54459msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153838: Fri Jan 30 02:59:22 2026 read: IOPS=24, BW=97.3KiB/s (99.7kB/s)(5992KiB/61554msec) clat (msec): min=3, max=730, avg=17.84, stdev=22.42 lat (msec): min=3, max=730, avg=17.84, stdev=22.42 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 36], 95.00th=[ 45], | 99.00th=[ 63], 99.50th=[ 69], 99.90th=[ 81], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 23, max= 367, per=25.28%, avg=97.83, stdev=65.26, samples=121 iops : min= 5, max= 91, avg=24.09, stdev=16.42, samples=121 write: IOPS=25, BW=102KiB/s (105kB/s)(6296KiB/61554msec); 0 zone resets clat (usec): min=4609, max=96528, avg=22012.50, stdev=14689.37 lat (usec): min=4611, max=96529, avg=22015.00, stdev=14689.58 clat percentiles (usec): | 1.00th=[ 5538], 5.00th=[ 6652], 10.00th=[ 7373], 20.00th=[ 8848], | 30.00th=[11469], 40.00th=[14615], 50.00th=[17957], 60.00th=[22676], | 70.00th=[27395], 80.00th=[33162], 90.00th=[42206], 95.00th=[50070], | 99.00th=[68682], 99.50th=[78119], 99.90th=[94897], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 31, max= 344, per=25.37%, avg=102.98, stdev=65.50, samples=121 iops : min= 7, max= 86, avg=25.38, stdev=16.50, samples=121 lat (msec) : 4=0.49%, 10=29.26%, 20=31.54%, 50=34.80%, 100=3.87% lat (msec) : 750=0.03% cpu : usr=0.16%, sys=14.02%, ctx=6543, 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=153839: Fri Jan 30 02:59:22 2026 read: IOPS=23, BW=95.0KiB/s (98.3kB/s)(5940KiB/61897msec) clat (msec): min=3, max=728, avg=17.97, stdev=22.80 lat (msec): min=3, max=728, avg=17.97, stdev=22.80 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 37], 95.00th=[ 45], | 99.00th=[ 67], 99.50th=[ 74], 99.90th=[ 93], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 15, max= 352, per=24.90%, avg=96.37, stdev=66.71, samples=122 iops : min= 3, max= 88, avg=23.73, stdev=16.80, samples=122 write: IOPS=25, BW=103KiB/s (105kB/s)(6348KiB/61897msec); 0 zone resets clat (usec): min=3923, max=95615, avg=22075.16, stdev=14681.29 lat (usec): min=3924, max=95617, avg=22076.41, stdev=14681.35 clat percentiles (usec): | 1.00th=[ 5669], 5.00th=[ 6652], 10.00th=[ 7373], 20.00th=[ 8717], | 30.00th=[11338], 40.00th=[14484], 50.00th=[18482], 60.00th=[22676], | 70.00th=[27919], 80.00th=[32900], 90.00th=[42206], 95.00th=[50070], | 99.00th=[69731], 99.50th=[79168], 99.90th=[91751], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 31, max= 335, per=25.32%, avg=102.80, stdev=65.39, samples=122 iops : min= 7, max= 83, avg=25.34, stdev=16.47, samples=122 lat (msec) : 4=0.72%, 10=29.39%, 20=30.89%, 50=34.93%, 100=4.04% lat (msec) : 750=0.03% cpu : usr=0.14%, sys=13.85%, ctx=6447, 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=153840: Fri Jan 30 02:59:22 2026 read: IOPS=24, BW=97.7KiB/s (99.0kB/s)(6028KiB/61729msec) clat (usec): min=3001, max=87671, avg=17612.81, stdev=13560.67 lat (usec): min=3003, max=87672, avg=17613.85, stdev=13560.75 clat percentiles (usec): | 1.00th=[ 4015], 5.00th=[ 4883], 10.00th=[ 5538], 20.00th=[ 6456], | 30.00th=[ 8717], 40.00th=[11207], 50.00th=[13304], 60.00th=[16319], | 70.00th=[20317], 80.00th=[25560], 90.00th=[36963], 95.00th=[46924], | 99.00th=[63701], 99.50th=[69731], 99.90th=[85459], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 15, max= 384, per=25.33%, avg=98.02, stdev=68.37, samples=121 iops : min= 3, max= 96, avg=24.14, stdev=17.22, samples=121 write: IOPS=25, BW=101KiB/s (104kB/s)(6260KiB/61729msec); 0 zone resets clat (msec): min=4, max=737, avg=22.35, stdev=23.07 lat (msec): min=4, max=737, avg=22.36, stdev=23.07 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 33], 90.00th=[ 41], 95.00th=[ 51], | 99.00th=[ 70], 99.50th=[ 83], 99.90th=[ 97], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 24, max= 304, per=25.04%, avg=101.66, stdev=63.83, samples=121 iops : min= 6, max= 76, avg=25.05, stdev=16.07, samples=121 lat (msec) : 4=0.49%, 10=28.94%, 20=32.03%, 50=34.28%, 100=4.23% lat (msec) : 750=0.03% cpu : usr=0.12%, sys=14.04%, ctx=6599, 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=153841: Fri Jan 30 02:59:22 2026 read: IOPS=24, BW=97.8KiB/s (100kB/s)(6052KiB/61881msec) clat (usec): min=3218, max=99209, avg=18149.75, stdev=14157.71 lat (usec): min=3219, max=99211, avg=18150.97, stdev=14157.71 clat percentiles (usec): | 1.00th=[ 4047], 5.00th=[ 5014], 10.00th=[ 5407], 20.00th=[ 6587], | 30.00th=[ 8455], 40.00th=[11207], 50.00th=[13566], 60.00th=[16450], | 70.00th=[21103], 80.00th=[28181], 90.00th=[38536], 95.00th=[45351], | 99.00th=[69731], 99.50th=[77071], 99.90th=[87557], 99.95th=[99091], | 99.99th=[99091] bw ( KiB/s): min= 23, max= 392, per=25.43%, avg=98.40, stdev=65.56, samples=122 iops : min= 5, max= 98, avg=24.24, stdev=16.51, samples=122 write: IOPS=25, BW=101KiB/s (103kB/s)(6236KiB/61881msec); 0 zone resets clat (msec): min=5, max=733, avg=21.96, stdev=22.88 lat (msec): min=5, max=733, avg=21.97, stdev=22.88 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 41], 95.00th=[ 50], | 99.00th=[ 71], 99.50th=[ 74], 99.90th=[ 91], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 23, max= 336, per=24.92%, avg=101.16, stdev=64.89, samples=122 iops : min= 5, max= 84, avg=24.93, stdev=16.35, samples=122 lat (msec) : 4=0.49%, 10=29.39%, 20=31.77%, 50=34.31%, 100=4.00% lat (msec) : 750=0.03% cpu : usr=0.12%, sys=13.96%, ctx=6502, 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=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=388KiB/s (397kB/s), 95.0KiB/s-97.8KiB/s (98.3kB/s-100kB/s), io=23.4MiB (24.6MB), run=61554-61897msec WRITE: bw=406KiB/s (416kB/s), 101KiB/s-103KiB/s (103kB/s-105kB/s), io=24.6MiB (25.7MB), run=61554-61897msec 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=153862: Fri Jan 30 02:59:44 2026 read: IOPS=24, BW=397KiB/s (407kB/s)(5920KiB/14896msec) clat (usec): min=153, max=59973, avg=20634.36, stdev=10208.34 lat (usec): min=154, max=59974, avg=20635.62, stdev=10208.56 clat percentiles (usec): | 1.00th=[ 396], 5.00th=[ 1074], 10.00th=[10421], 20.00th=[12911], | 30.00th=[15270], 40.00th=[17433], 50.00th=[19792], 60.00th=[21890], | 70.00th=[24511], 80.00th=[26870], 90.00th=[32900], 95.00th=[39060], | 99.00th=[53216], 99.50th=[57410], 99.90th=[60031], 99.95th=[60031], | 99.99th=[60031] bw ( KiB/s): min= 222, max= 571, per=25.22%, avg=393.38, stdev=90.21, samples=29 iops : min= 13, max= 35, avg=24.14, stdev= 5.67, samples=29 write: IOPS=26, BW=427KiB/s (438kB/s)(6368KiB/14896msec); 0 zone resets clat (usec): min=1409, max=91970, avg=18042.04, stdev=13758.96 lat (usec): min=1411, max=91972, avg=18043.85, stdev=13759.05 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 3884], 10.00th=[ 4555], 20.00th=[ 6128], | 30.00th=[ 9372], 40.00th=[12387], 50.00th=[15139], 60.00th=[18220], | 70.00th=[21365], 80.00th=[26608], 90.00th=[34866], 95.00th=[43779], | 99.00th=[78119], 99.50th=[81265], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 253, max= 544, per=26.04%, avg=427.31, stdev=80.20, samples=29 iops : min= 15, max= 34, avg=26.28, stdev= 5.10, samples=29 lat (usec) : 250=0.26%, 500=0.65%, 750=1.30%, 1000=0.13% lat (msec) : 2=1.04%, 4=2.34%, 10=14.84%, 20=38.28%, 50=38.28% lat (msec) : 100=2.86% cpu : usr=0.12%, sys=26.37%, ctx=2754, 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=153863: Fri Jan 30 02:59:44 2026 read: IOPS=23, BW=378KiB/s (387kB/s)(5744KiB/15203msec) clat (usec): min=375, max=63573, avg=21486.40, stdev=9904.48 lat (usec): min=376, max=63575, avg=21493.44, stdev=9904.57 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 8717], 10.00th=[11207], 20.00th=[14091], | 30.00th=[15926], 40.00th=[17957], 50.00th=[20055], 60.00th=[22938], | 70.00th=[25035], 80.00th=[28181], 90.00th=[33424], 95.00th=[38536], | 99.00th=[53216], 99.50th=[58459], 99.90th=[63701], 99.95th=[63701], | 99.99th=[63701] bw ( KiB/s): min= 191, max= 608, per=24.37%, avg=380.10, stdev=95.67, samples=30 iops : min= 11, max= 38, avg=23.33, stdev= 6.12, samples=30 write: IOPS=26, BW=430KiB/s (441kB/s)(6544KiB/15203msec); 0 zone resets clat (usec): min=1464, max=72183, avg=18144.76, stdev=12267.20 lat (usec): min=1466, max=72186, avg=18146.43, stdev=12267.19 clat percentiles (usec): | 1.00th=[ 2868], 5.00th=[ 4555], 10.00th=[ 5014], 20.00th=[ 6980], | 30.00th=[ 9634], 40.00th=[12911], 50.00th=[15270], 60.00th=[17957], | 70.00th=[23200], 80.00th=[28181], 90.00th=[34866], 95.00th=[41157], | 99.00th=[56886], 99.50th=[65274], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 160, max= 704, per=26.16%, avg=429.30, stdev=109.76, samples=30 iops : min= 10, max= 44, avg=26.43, stdev= 6.91, samples=30 lat (usec) : 500=0.52%, 750=0.52%, 1000=0.26% lat (msec) : 2=0.26%, 4=1.17%, 10=16.54%, 20=38.15%, 50=40.76% lat (msec) : 100=1.82% cpu : usr=0.06%, sys=26.46%, ctx=2899, 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=153864: Fri Jan 30 02:59:44 2026 read: IOPS=25, BW=407KiB/s (417kB/s)(6256KiB/15353msec) clat (usec): min=469, max=59795, avg=21104.17, stdev=9815.29 lat (usec): min=470, max=59796, avg=21105.21, stdev=9815.31 clat percentiles (usec): | 1.00th=[ 494], 5.00th=[ 9503], 10.00th=[11076], 20.00th=[13435], | 30.00th=[15139], 40.00th=[17433], 50.00th=[19530], 60.00th=[22152], | 70.00th=[25297], 80.00th=[28181], 90.00th=[32900], 95.00th=[38011], | 99.00th=[56886], 99.50th=[58983], 99.90th=[60031], 99.95th=[60031], | 99.99th=[60031] bw ( KiB/s): min= 191, max= 576, per=26.08%, avg=406.83, stdev=102.90, samples=30 iops : min= 11, max= 36, avg=25.00, stdev= 6.49, samples=30 write: IOPS=24, BW=393KiB/s (402kB/s)(6032KiB/15353msec); 0 zone resets clat (usec): min=1538, max=96560, avg=18739.56, stdev=13327.67 lat (usec): min=1540, max=96563, avg=18741.56, stdev=13327.75 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 3621], 10.00th=[ 4621], 20.00th=[ 6849], | 30.00th=[10028], 40.00th=[12518], 50.00th=[16188], 60.00th=[19268], | 70.00th=[22676], 80.00th=[28443], 90.00th=[38011], 95.00th=[44303], | 99.00th=[57410], 99.50th=[64750], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 190, max= 608, per=23.57%, avg=386.83, stdev=96.45, samples=30 iops : min= 11, max= 38, avg=23.77, stdev= 6.15, samples=30 lat (usec) : 500=0.52%, 750=0.39%, 1000=0.26% lat (msec) : 2=1.17%, 4=2.21%, 10=13.28%, 20=39.45%, 50=40.76% lat (msec) : 100=1.95% cpu : usr=0.13%, sys=25.73%, ctx=2868, 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=153865: Fri Jan 30 02:59:44 2026 read: IOPS=25, BW=405KiB/s (414kB/s)(6032KiB/14904msec) clat (usec): min=223, max=76725, avg=21122.77, stdev=11438.06 lat (usec): min=225, max=76726, avg=21124.38, stdev=11438.99 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 824], 10.00th=[10159], 20.00th=[13042], | 30.00th=[15139], 40.00th=[16909], 50.00th=[19530], 60.00th=[22152], | 70.00th=[24773], 80.00th=[28967], 90.00th=[36439], 95.00th=[41681], | 99.00th=[61080], 99.50th=[63701], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 223, max= 608, per=25.66%, avg=400.28, stdev=109.50, samples=29 iops : min= 13, max= 38, avg=24.59, stdev= 6.90, samples=29 write: IOPS=26, BW=420KiB/s (430kB/s)(6256KiB/14904msec); 0 zone resets clat (usec): min=3201, max=71840, avg=17516.87, stdev=11805.58 lat (usec): min=3202, max=71842, avg=17518.73, stdev=11805.57 clat percentiles (usec): | 1.00th=[ 3818], 5.00th=[ 4555], 10.00th=[ 5080], 20.00th=[ 7177], | 30.00th=[ 9634], 40.00th=[12256], 50.00th=[14484], 60.00th=[17171], | 70.00th=[21103], 80.00th=[25822], 90.00th=[33817], 95.00th=[41681], | 99.00th=[53740], 99.50th=[60556], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 287, max= 640, per=25.45%, avg=417.69, stdev=85.94, samples=29 iops : min= 17, max= 40, avg=25.66, stdev= 5.61, samples=29 lat (usec) : 250=0.13%, 500=0.39%, 750=1.69%, 1000=0.52% lat (msec) : 4=1.17%, 10=16.28%, 20=40.10%, 50=37.89%, 100=1.82% cpu : usr=0.09%, sys=27.01%, ctx=2818, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1560KiB/s (1598kB/s), 378KiB/s-407KiB/s (387kB/s-417kB/s), io=23.4MiB (24.5MB), run=14896-15353msec WRITE: bw=1641KiB/s (1681kB/s), 393KiB/s-430KiB/s (402kB/s-441kB/s), io=24.6MiB (25.8MB), run=14896-15353msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153867: Fri Jan 30 02:59:46 2026 read: IOPS=21, BW=342KiB/s (350kB/s)(5920KiB/17335msec) clat (usec): min=3470, max=96357, avg=18973.02, stdev=14000.28 lat (usec): min=3471, max=96357, avg=18973.83, stdev=14000.31 clat percentiles (usec): | 1.00th=[ 4817], 5.00th=[ 6194], 10.00th=[ 6652], 20.00th=[ 8160], | 30.00th=[10159], 40.00th=[12125], 50.00th=[13960], 60.00th=[16909], | 70.00th=[20579], 80.00th=[27919], 90.00th=[37487], 95.00th=[46924], | 99.00th=[69731], 99.50th=[71828], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 96, max= 896, per=24.13%, avg=333.29, stdev=190.25, samples=34 iops : min= 6, max= 56, avg=20.32, stdev=12.05, samples=34 write: IOPS=22, BW=367KiB/s (376kB/s)(6368KiB/17335msec); 0 zone resets clat (msec): min=4, max=100, avg=25.67, stdev=16.92 lat (msec): min=4, max=100, avg=25.67, stdev=16.92 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 39], 90.00th=[ 51], 95.00th=[ 61], | 99.00th=[ 82], 99.50th=[ 91], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 95, max= 896, per=24.98%, avg=362.94, stdev=189.20, samples=34 iops : min= 5, max= 56, avg=22.18, stdev=12.02, samples=34 lat (msec) : 4=0.26%, 10=20.70%, 20=38.02%, 50=33.85%, 100=7.03% lat (msec) : 250=0.13% cpu : usr=0.11%, sys=13.08%, ctx=1701, 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=153868: Fri Jan 30 02:59:46 2026 read: IOPS=20, BW=334KiB/s (342kB/s)(5744KiB/17180msec) clat (usec): min=4746, max=73506, avg=20825.31, stdev=14875.67 lat (usec): min=4747, max=73507, avg=20826.10, stdev=14875.67 clat percentiles (usec): | 1.00th=[ 5407], 5.00th=[ 6128], 10.00th=[ 6849], 20.00th=[ 8717], | 30.00th=[10552], 40.00th=[12780], 50.00th=[15008], 60.00th=[18744], | 70.00th=[25560], 80.00th=[32637], 90.00th=[43254], 95.00th=[50594], | 99.00th=[69731], 99.50th=[71828], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 131, max= 864, per=24.34%, avg=336.18, stdev=177.21, samples=34 iops : min= 8, max= 54, avg=20.50, stdev=11.30, samples=34 write: IOPS=23, BW=381KiB/s (390kB/s)(6544KiB/17180msec); 0 zone resets clat (msec): min=5, max=102, avg=23.41, stdev=15.42 lat (msec): min=5, max=102, avg=23.41, stdev=15.42 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 27], 80.00th=[ 34], 90.00th=[ 44], 95.00th=[ 52], | 99.00th=[ 78], 99.50th=[ 91], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 159, max= 1024, per=26.22%, avg=380.91, stdev=212.91, samples=34 iops : min= 9, max= 64, avg=23.29, stdev=13.49, samples=34 lat (msec) : 10=19.79%, 20=38.41%, 50=36.07%, 100=5.60%, 250=0.13% cpu : usr=0.13%, sys=13.06%, ctx=1721, 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=153869: Fri Jan 30 02:59:46 2026 read: IOPS=22, BW=361KiB/s (370kB/s)(6256KiB/17306msec) clat (usec): min=3643, max=84497, avg=20480.95, stdev=15509.95 lat (usec): min=3644, max=84497, avg=20481.78, stdev=15509.93 clat percentiles (usec): | 1.00th=[ 4621], 5.00th=[ 5932], 10.00th=[ 6783], 20.00th=[ 8094], | 30.00th=[10159], 40.00th=[12125], 50.00th=[13829], 60.00th=[17957], | 70.00th=[25297], 80.00th=[31327], 90.00th=[44303], 95.00th=[52691], | 99.00th=[76022], 99.50th=[78119], 99.90th=[84411], 99.95th=[84411], | 99.99th=[84411] bw ( KiB/s): min= 128, max= 1216, per=26.08%, avg=360.18, stdev=230.96, samples=34 iops : min= 8, max= 76, avg=22.00, stdev=14.60, samples=34 write: IOPS=21, BW=349KiB/s (357kB/s)(6032KiB/17306msec); 0 zone resets clat (usec): min=5780, max=87993, avg=24262.80, stdev=15932.50 lat (usec): min=5782, max=87996, avg=24264.78, stdev=15932.44 clat percentiles (usec): | 1.00th=[ 6456], 5.00th=[ 7832], 10.00th=[ 8848], 20.00th=[11469], | 30.00th=[13173], 40.00th=[15926], 50.00th=[19530], 60.00th=[23725], | 70.00th=[28443], 80.00th=[35914], 90.00th=[47973], 95.00th=[56886], | 99.00th=[78119], 99.50th=[82314], 99.90th=[87557], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 158, max= 864, per=23.47%, avg=341.09, stdev=183.59, samples=34 iops : min= 9, max= 54, avg=20.79, stdev=11.68, samples=34 lat (msec) : 4=0.26%, 10=22.66%, 20=34.51%, 50=35.03%, 100=7.55% cpu : usr=0.14%, sys=12.75%, ctx=1718, 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=153870: Fri Jan 30 02:59:46 2026 read: IOPS=21, BW=349KiB/s (357kB/s)(6032KiB/17283msec) clat (usec): min=3975, max=93875, avg=19482.67, stdev=15489.45 lat (usec): min=3976, max=93877, avg=19483.48, stdev=15489.45 clat percentiles (usec): | 1.00th=[ 4359], 5.00th=[ 5735], 10.00th=[ 6259], 20.00th=[ 7701], | 30.00th=[ 9503], 40.00th=[11338], 50.00th=[12911], 60.00th=[16581], | 70.00th=[22938], 80.00th=[30016], 90.00th=[43779], 95.00th=[52167], | 99.00th=[73925], 99.50th=[79168], 99.90th=[93848], 99.95th=[93848], | 99.99th=[93848] bw ( KiB/s): min= 96, max= 960, per=24.99%, avg=345.12, stdev=213.80, samples=34 iops : min= 6, max= 60, avg=21.06, stdev=13.47, samples=34 write: IOPS=22, BW=362KiB/s (371kB/s)(6256KiB/17283msec); 0 zone resets clat (usec): min=5444, max=89294, avg=25099.69, stdev=16302.25 lat (usec): min=5446, max=89296, avg=25101.44, stdev=16302.21 clat percentiles (usec): | 1.00th=[ 6587], 5.00th=[ 8356], 10.00th=[ 9372], 20.00th=[11207], | 30.00th=[13173], 40.00th=[15270], 50.00th=[19268], 60.00th=[24511], | 70.00th=[31589], 80.00th=[38011], 90.00th=[49021], 95.00th=[57410], | 99.00th=[78119], 99.50th=[81265], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 95, max= 928, per=24.66%, avg=358.35, stdev=199.21, samples=34 iops : min= 5, max= 58, avg=21.88, stdev=12.68, samples=34 lat (msec) : 4=0.13%, 10=22.92%, 20=34.64%, 50=34.24%, 100=8.07% cpu : usr=0.14%, sys=12.72%, ctx=1747, 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=1382KiB/s (1415kB/s), 334KiB/s-361KiB/s (342kB/s-370kB/s), io=23.4MiB (24.5MB), run=17180-17335msec WRITE: bw=1454KiB/s (1489kB/s), 349KiB/s-381KiB/s (357kB/s-390kB/s), io=24.6MiB (25.8MB), run=17180-17335msec 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=153879: Fri Jan 30 02:59:55 2026 read: IOPS=2, BW=2334KiB/s (2390kB/s)(7168KiB/3071msec) clat (usec): min=1128, max=1205.6k, avg=243212.26, stdev=429313.97 lat (usec): min=1130, max=1205.6k, avg=243213.66, stdev=429314.14 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1123], 10.00th=[ 1123], | 20.00th=[ 1172], 30.00th=[ 69731], 40.00th=[ 69731], | 50.00th=[ 121111], 60.00th=[ 131597], 70.00th=[ 131597], | 80.00th=[ 170918], 90.00th=[1199571], 95.00th=[1199571], | 99.00th=[1199571], 99.50th=[1199571], 99.90th=[1199571], | 99.95th=[1199571], 99.99th=[1199571] bw ( KiB/s): min= 2048, max= 6144, per=77.58%, avg=4069.00, stdev=2048.53, samples=3 iops : min= 2, max= 6, avg= 3.67, stdev= 2.08, samples=3 write: IOPS=1, BW=1667KiB/s (1707kB/s)(5120KiB/3071msec); 0 zone resets clat (msec): min=121, max=382, avg=269.98, stdev=94.84 lat (msec): min=122, max=382, avg=270.12, stdev=94.71 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 259], 40.00th=[ 259], 50.00th=[ 288], 60.00th=[ 288], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 2007, max= 4096, per=37.00%, avg=2717.00, stdev=1194.42, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 2=16.67%, 100=8.33%, 250=33.33%, 500=33.33%, 2000=8.33% cpu : usr=0.03%, sys=37.75%, ctx=1206, 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=153881: Fri Jan 30 02:59:55 2026 read: IOPS=0, BW=525KiB/s (537kB/s)(2048KiB/3904msec) clat (msec): min=160, max=177, avg=168.93, stdev=11.75 lat (msec): min=160, max=177, avg=168.94, stdev=11.75 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 178], | 70.00th=[ 178], 80.00th=[ 178], 90.00th=[ 178], 95.00th=[ 178], | 99.00th=[ 178], 99.50th=[ 178], 99.90th=[ 178], 99.95th=[ 178], | 99.99th=[ 178] bw ( KiB/s): min= 2015, max= 2048, per=38.73%, avg=2031.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2623KiB/s (2686kB/s)(10.0MiB/3904msec); 0 zone resets clat (msec): min=101, max=1330, avg=350.69, stdev=369.38 lat (msec): min=101, max=1330, avg=350.76, stdev=369.38 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 109], | 30.00th=[ 148], 40.00th=[ 153], 50.00th=[ 203], 60.00th=[ 207], | 70.00th=[ 338], 80.00th=[ 439], 90.00th=[ 481], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 4087, max= 6023, per=64.48%, avg=4735.33, stdev=1115.16, samples=3 iops : min= 3, max= 5, avg= 4.00, stdev= 1.00, samples=3 lat (msec) : 250=66.67%, 500=25.00%, 2000=8.33% cpu : usr=0.03%, sys=37.84%, ctx=296, 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=153883: Fri Jan 30 02:59:55 2026 read: IOPS=1, BW=1759KiB/s (1802kB/s)(6144KiB/3492msec) clat (usec): min=862, max=174960, avg=80318.21, stdev=87982.43 lat (usec): min=862, max=174961, avg=80348.32, stdev=88017.85 clat percentiles (usec): | 1.00th=[ 865], 5.00th=[ 865], 10.00th=[ 865], 20.00th=[ 898], | 30.00th=[ 898], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[135267], | 70.00th=[168821], 80.00th=[168821], 90.00th=[175113], 95.00th=[175113], | 99.00th=[175113], 99.50th=[175113], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 2048, max= 4096, per=64.56%, avg=3386.33, stdev=1159.74, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1759KiB/s (1802kB/s)(6144KiB/3492msec); 0 zone resets clat (msec): min=188, max=1261, avg=476.53, stdev=420.78 lat (msec): min=188, max=1261, avg=476.67, stdev=420.71 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 192], | 30.00th=[ 192], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 338], | 70.00th=[ 642], 80.00th=[ 642], 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= 2007, max= 2048, per=27.70%, avg=2034.00, stdev=19.63, samples=5 iops : min= 1, max= 2, avg= 1.60, stdev= 0.55, samples=5 lat (usec) : 1000=16.67% lat (msec) : 2=8.33%, 250=50.00%, 500=8.33%, 750=8.33%, 2000=8.33% cpu : usr=0.03%, sys=29.39%, ctx=320, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153885: Fri Jan 30 02:59:55 2026 read: IOPS=1, BW=1835KiB/s (1879kB/s)(5120KiB/2790msec) clat (usec): min=1011, max=130570, avg=53096.39, stdev=59628.91 lat (usec): min=1012, max=130571, avg=53097.81, stdev=59628.96 clat percentiles (usec): | 1.00th=[ 1012], 5.00th=[ 1012], 10.00th=[ 1012], 20.00th=[ 1012], | 30.00th=[ 2024], 40.00th=[ 2024], 50.00th=[ 30016], 60.00th=[ 30016], | 70.00th=[102237], 80.00th=[102237], 90.00th=[130548], 95.00th=[130548], | 99.00th=[130548], 99.50th=[130548], 99.90th=[130548], 99.95th=[130548], | 99.99th=[130548] bw ( KiB/s): min= 8078, max= 8078, per=100.00%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2569KiB/s (2631kB/s)(7168KiB/2790msec); 0 zone resets clat (msec): min=145, max=1292, avg=355.47, stdev=414.34 lat (msec): min=145, max=1292, avg=355.54, stdev=414.34 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 171], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 205], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 247], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 1367, max= 4096, per=39.26%, avg=2883.25, stdev=1394.26, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (msec) : 2=8.33%, 4=8.33%, 50=8.33%, 250=66.67%, 2000=8.33% cpu : usr=0.04%, sys=39.87%, ctx=444, 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=5246KiB/s (5372kB/s), 525KiB/s-2334KiB/s (537kB/s-2390kB/s), io=20.0MiB (20.0MB), run=2790-3904msec WRITE: bw=7344KiB/s (7521kB/s), 1667KiB/s-2623KiB/s (1707kB/s-2686kB/s), io=28.0MiB (29.4MB), run=2790-3904msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153878: Fri Jan 30 02:59:56 2026 read: IOPS=1, BW=1756KiB/s (1799kB/s)(7168KiB/4081msec) clat (msec): min=45, max=1246, avg=453.77, stdev=520.63 lat (msec): min=45, max=1246, avg=453.77, stdev=520.63 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 49], | 30.00th=[ 68], 40.00th=[ 68], 50.00th=[ 81], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 1036], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 2027, max= 4096, per=49.05%, avg=2450.00, stdev=920.19, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.22, samples=5 write: IOPS=1, BW=1255KiB/s (1285kB/s)(5120KiB/4081msec); 0 zone resets clat (msec): min=56, max=297, avg=176.32, stdev=89.91 lat (msec): min=56, max=298, avg=176.42, stdev=89.94 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 57], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 176], 60.00th=[ 176], | 70.00th=[ 215], 80.00th=[ 215], 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= 2048, max= 8126, per=72.74%, avg=5087.00, stdev=4297.80, samples=2 iops : min= 2, max= 7, avg= 4.50, stdev= 3.54, samples=2 lat (msec) : 50=16.67%, 100=25.00%, 250=25.00%, 500=8.33%, 750=8.33% lat (msec) : 2000=16.67% cpu : usr=0.02%, sys=7.75%, ctx=71, 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=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=153880: Fri Jan 30 02:59:56 2026 read: IOPS=0, BW=502KiB/s (515kB/s)(2048KiB/4076msec) clat (msec): min=170, max=338, avg=254.85, stdev=118.97 lat (msec): min=170, max=338, avg=254.85, stdev=118.97 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 171], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 1992, max= 2048, per=40.44%, avg=2020.00, stdev=39.60, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2512KiB/s (2573kB/s)(10.0MiB/4076msec); 0 zone resets clat (msec): min=82, max=1796, avg=340.55, stdev=517.29 lat (msec): min=82, max=1796, avg=340.63, stdev=517.29 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 84], 10.00th=[ 84], 20.00th=[ 105], | 30.00th=[ 118], 40.00th=[ 142], 50.00th=[ 167], 60.00th=[ 184], | 70.00th=[ 224], 80.00th=[ 255], 90.00th=[ 334], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 2048, max= 6095, per=65.50%, avg=4580.50, stdev=1932.14, samples=4 iops : min= 2, max= 5, avg= 4.00, stdev= 1.41, samples=4 lat (msec) : 100=8.33%, 250=58.33%, 500=25.00%, 2000=8.33% cpu : usr=0.00%, sys=17.06%, ctx=417, 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=153882: Fri Jan 30 02:59:56 2026 read: IOPS=1, BW=1605KiB/s (1644kB/s)(6144KiB/3827msec) clat (msec): min=41, max=383, avg=144.65, stdev=125.83 lat (msec): min=41, max=383, avg=144.65, stdev=125.83 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 65], | 30.00th=[ 65], 40.00th=[ 81], 50.00th=[ 81], 60.00th=[ 127], | 70.00th=[ 171], 80.00th=[ 171], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 4096, max= 4096, per=82.00%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1605KiB/s (1644kB/s)(6144KiB/3827msec); 0 zone resets clat (msec): min=34, max=1543, avg=467.02, stdev=555.66 lat (msec): min=34, max=1543, avg=467.09, stdev=555.66 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 35], 10.00th=[ 35], 20.00th=[ 134], | 30.00th=[ 134], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 456], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 2027, max= 4079, per=38.87%, avg=2718.00, stdev=1178.71, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 50=16.67%, 100=16.67%, 250=33.33%, 500=25.00%, 2000=8.33% cpu : usr=0.03%, sys=11.00%, ctx=120, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153884: Fri Jan 30 02:59:56 2026 read: IOPS=1, BW=1249KiB/s (1279kB/s)(5120KiB/4100msec) clat (msec): min=31, max=266, avg=123.95, stdev=98.92 lat (msec): min=31, max=266, avg=123.95, stdev=98.92 clat percentiles (msec): | 1.00th=[ 32], 5.00th=[ 32], 10.00th=[ 32], 20.00th=[ 32], | 30.00th=[ 51], 40.00th=[ 51], 50.00th=[ 89], 60.00th=[ 89], | 70.00th=[ 184], 80.00th=[ 184], 90.00th=[ 268], 95.00th=[ 268], | 99.00th=[ 268], 99.50th=[ 268], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 2031, max= 6144, per=81.83%, avg=4087.50, stdev=2908.33, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 write: IOPS=1, BW=1748KiB/s (1790kB/s)(7168KiB/4100msec); 0 zone resets clat (msec): min=79, max=1514, avg=476.04, stdev=487.71 lat (msec): min=79, max=1514, avg=476.12, stdev=487.71 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 105], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 334], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 535], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 2027, max= 4096, per=43.70%, avg=3056.25, stdev=1181.63, samples=4 iops : min= 1, max= 4, avg= 2.25, stdev= 1.50, samples=4 lat (msec) : 50=16.67%, 100=16.67%, 250=16.67%, 500=33.33%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=15.52%, ctx=146, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4995KiB/s (5115kB/s), 502KiB/s-1756KiB/s (515kB/s-1799kB/s), io=20.0MiB (20.0MB), run=3827-4100msec WRITE: bw=6993KiB/s (7161kB/s), 1255KiB/s-2512KiB/s (1285kB/s-2573kB/s), io=28.0MiB (29.4MB), run=3827-4100msec 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=153891: Fri Jan 30 03:00:04 2026 read: IOPS=2, BW=8365KiB/s (8566kB/s)(12.0MiB/1469msec) clat (msec): min=442, max=504, avg=481.05, stdev=33.44 lat (msec): min=442, max=504, avg=481.05, stdev=33.44 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 443], 10.00th=[ 443], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7627, max= 8192, per=96.41%, avg=7909.50, stdev=399.52, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.07%, sys=51.87%, ctx=2477, 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=153892: Fri Jan 30 03:00:04 2026 read: IOPS=0, BW=2051KiB/s (2100kB/s)(4096KiB/1997msec) clat (nsec): min=506805k, max=506805k, avg=506805371.00, stdev= 0.00 lat (nsec): min=506808k, max=506808k, avg=506808235.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 7353, max= 7353, per=89.63%, avg=7353.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4102KiB/s (4201kB/s)(8192KiB/1997msec); 0 zone resets clat (msec): min=576, max=877, avg=726.85, stdev=212.83 lat (msec): min=576, max=877, avg=727.28, stdev=212.92 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 575], 10.00th=[ 575], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 877], | 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= 8015, max= 8015, per=49.17%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.05%, sys=23.00%, ctx=884, 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=153893: Fri Jan 30 03:00:04 2026 write: IOPS=1, BW=6209KiB/s (6358kB/s)(12.0MiB/1979msec); 0 zone resets clat (msec): min=583, max=735, avg=647.64, stdev=78.97 lat (msec): min=584, max=736, avg=647.91, stdev=79.04 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8015, max= 8192, per=49.71%, avg=8103.50, stdev=125.16, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.25%, sys=24.42%, ctx=127, 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=153894: Fri Jan 30 03:00:04 2026 write: IOPS=1, BW=6113KiB/s (6260kB/s)(12.0MiB/2010msec); 0 zone resets clat (msec): min=376, max=1132, avg=660.39, stdev=411.68 lat (msec): min=376, max=1134, avg=661.08, stdev=412.40 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7699, max= 8192, per=48.74%, avg=7945.50, stdev=348.60, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.10%, sys=19.96%, ctx=77, 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=8204KiB/s (8401kB/s), 2051KiB/s-8365KiB/s (2100kB/s-8566kB/s), io=16.0MiB (16.8MB), run=1469-1997msec WRITE: bw=15.9MiB/s (16.7MB/s), 4102KiB/s-6209KiB/s (4201kB/s-6358kB/s), io=32.0MiB (33.6MB), run=1979-2010msec rand-rw: (groupid=0, jobs=1): err= 0: pid=153896: Fri Jan 30 03:00:05 2026 read: IOPS=1, BW=5251KiB/s (5377kB/s)(12.0MiB/2340msec) clat (msec): min=201, max=1463, avg=757.70, stdev=643.88 lat (msec): min=201, max=1463, avg=757.70, stdev=643.88 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 609], 50.00th=[ 609], 60.00th=[ 609], | 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=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) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.55%, ctx=93, 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=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=153897: Fri Jan 30 03:00:05 2026 read: IOPS=0, BW=1612KiB/s (1651kB/s)(4096KiB/2541msec) clat (nsec): min=1013.4M, max=1013.4M, avg=1013375147.00, stdev= 0.00 lat (nsec): min=1013.4M, max=1013.4M, avg=1013377844.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3224KiB/s (3301kB/s)(8192KiB/2541msec); 0 zone resets clat (msec): min=531, max=983, avg=757.27, stdev=319.31 lat (msec): min=531, max=983, avg=757.69, stdev=319.38 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 531], 10.00th=[ 531], 20.00th=[ 531], | 30.00th=[ 531], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 986], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 8062, max= 8062, per=62.52%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=14.13%, ctx=81, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153898: Fri Jan 30 03:00:05 2026 write: IOPS=1, BW=4859KiB/s (4975kB/s)(12.0MiB/2529msec); 0 zone resets clat (msec): min=205, max=1627, avg=826.52, stdev=727.90 lat (msec): min=205, max=1627, avg=826.89, stdev=727.83 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8062, max= 8192, per=63.02%, avg=8127.00, stdev=91.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=13.05%, ctx=60, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=153899: Fri Jan 30 03:00:05 2026 write: IOPS=1, BW=5874KiB/s (6015kB/s)(12.0MiB/2092msec); 0 zone resets clat (msec): min=465, max=800, avg=682.35, stdev=188.24 lat (msec): min=465, max=801, avg=682.77, stdev=188.29 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 8062, max= 8192, per=63.02%, avg=8127.00, stdev=91.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.19%, sys=16.50%, ctx=89, 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=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=6448KiB/s (6603kB/s), 1612KiB/s-5251KiB/s (1651kB/s-5377kB/s), io=16.0MiB (16.8MB), run=2340-2541msec WRITE: bw=12.6MiB/s (13.2MB/s), 3224KiB/s-5874KiB/s (3301kB/s-6015kB/s), io=32.0MiB (33.6MB), run=2092-2541msec