== sanity test 398b: DIO and buffer IO race ============== 19:43:10 (1775864590) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.58678 s, 19.5 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=189986: Fri Apr 10 19:44:02 2026 read: IOPS=36, BW=147KiB/s (150kB/s)(5992KiB/40783msec) clat (usec): min=28, max=64928, avg=14502.74, stdev=7094.02 lat (usec): min=29, max=64929, avg=14503.43, stdev=7094.06 clat percentiles (usec): | 1.00th=[ 98], 5.00th=[ 6194], 10.00th=[ 7504], 20.00th=[ 8979], | 30.00th=[10290], 40.00th=[11600], 50.00th=[13435], 60.00th=[15401], | 70.00th=[17433], 80.00th=[19530], 90.00th=[22676], 95.00th=[25822], | 99.00th=[35914], 99.50th=[46924], 99.90th=[62653], 99.95th=[64750], | 99.99th=[64750] bw ( KiB/s): min= 19, max= 215, per=26.00%, avg=146.90, stdev=32.09, samples=81 iops : min= 4, max= 53, avg=36.31, stdev= 8.03, samples=81 write: IOPS=38, BW=154KiB/s (158kB/s)(6296KiB/40783msec); 0 zone resets clat (usec): min=635, max=613363, avg=12017.15, stdev=17552.69 lat (usec): min=636, max=613364, avg=12017.85, stdev=17552.71 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 2409], 10.00th=[ 2704], 20.00th=[ 3392], | 30.00th=[ 4817], 40.00th=[ 7570], 50.00th=[ 9765], 60.00th=[ 11731], | 70.00th=[ 14484], 80.00th=[ 18744], 90.00th=[ 24249], 95.00th=[ 28967], | 99.00th=[ 39584], 99.50th=[ 46924], 99.90th=[ 57934], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 72, max= 255, per=26.44%, avg=156.29, stdev=34.79, samples=80 iops : min= 18, max= 63, avg=38.66, stdev= 8.63, samples=80 lat (usec) : 50=0.10%, 100=0.42%, 250=0.49%, 750=0.20%, 1000=0.20% lat (msec) : 2=1.17%, 4=11.33%, 10=25.72%, 20=42.84%, 50=17.22% lat (msec) : 100=0.29%, 750=0.03% cpu : usr=0.06%, sys=25.99%, ctx=9045, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=189987: Fri Apr 10 19:44:02 2026 read: IOPS=35, BW=141KiB/s (144kB/s)(5940KiB/42184msec) clat (usec): min=76, max=74241, avg=14972.87, stdev=7585.55 lat (usec): min=76, max=74242, avg=14973.65, stdev=7585.56 clat percentiles (usec): | 1.00th=[ 103], 5.00th=[ 6521], 10.00th=[ 7439], 20.00th=[ 9110], | 30.00th=[10421], 40.00th=[11863], 50.00th=[13435], 60.00th=[15401], | 70.00th=[17433], 80.00th=[20055], 90.00th=[23725], 95.00th=[27919], | 99.00th=[42730], 99.50th=[44827], 99.90th=[63701], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 6, max= 223, per=24.89%, avg=140.60, stdev=34.21, samples=83 iops : min= 1, max= 55, avg=34.75, stdev= 8.51, samples=83 write: IOPS=37, BW=150KiB/s (154kB/s)(6348KiB/42184msec); 0 zone resets clat (usec): min=672, max=624883, avg=12482.54, stdev=17738.44 lat (usec): min=673, max=624884, avg=12483.29, stdev=17738.44 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 2474], 10.00th=[ 2802], 20.00th=[ 3523], | 30.00th=[ 5866], 40.00th=[ 8356], 50.00th=[ 10552], 60.00th=[ 12387], | 70.00th=[ 15270], 80.00th=[ 19006], 90.00th=[ 24511], 95.00th=[ 29230], | 99.00th=[ 39584], 99.50th=[ 46400], 99.90th=[ 57934], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 6, max= 224, per=25.31%, avg=149.58, stdev=36.41, samples=83 iops : min= 1, max= 56, avg=36.99, stdev= 9.10, samples=83 lat (usec) : 100=0.42%, 250=0.29%, 500=0.03%, 750=0.10%, 1000=0.33% lat (msec) : 2=1.07%, 4=10.71%, 10=24.38%, 20=43.75%, 50=18.65% lat (msec) : 100=0.23%, 750=0.03% cpu : usr=0.08%, sys=25.63%, ctx=9292, 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=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=189988: Fri Apr 10 19:44:02 2026 read: IOPS=35, BW=142KiB/s (145kB/s)(6028KiB/42490msec) clat (usec): min=40, max=70132, avg=14882.92, stdev=7539.88 lat (usec): min=41, max=70132, avg=14883.63, stdev=7539.87 clat percentiles (usec): | 1.00th=[ 108], 5.00th=[ 6456], 10.00th=[ 7635], 20.00th=[ 8979], | 30.00th=[10421], 40.00th=[11863], 50.00th=[13435], 60.00th=[15401], | 70.00th=[17433], 80.00th=[19792], 90.00th=[23462], 95.00th=[27919], | 99.00th=[39060], 99.50th=[49546], 99.90th=[63177], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 72, max= 215, per=25.39%, avg=143.45, stdev=29.51, samples=83 iops : min= 18, max= 53, avg=35.46, stdev= 7.34, samples=83 write: IOPS=36, BW=147KiB/s (151kB/s)(6260KiB/42490msec); 0 zone resets clat (usec): min=653, max=641869, avg=12718.45, stdev=18207.90 lat (usec): min=654, max=641871, avg=12719.26, stdev=18207.92 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 2409], 10.00th=[ 2769], 20.00th=[ 3621], | 30.00th=[ 6063], 40.00th=[ 8586], 50.00th=[ 10552], 60.00th=[ 12518], | 70.00th=[ 15401], 80.00th=[ 19530], 90.00th=[ 24773], 95.00th=[ 29754], | 99.00th=[ 38011], 99.50th=[ 45876], 99.90th=[ 51119], 99.95th=[641729], | 99.99th=[641729] bw ( KiB/s): min= 71, max= 216, per=25.13%, avg=148.53, stdev=33.13, samples=83 iops : min= 17, max= 54, avg=36.73, stdev= 8.28, samples=83 lat (usec) : 50=0.03%, 100=0.42%, 250=0.29%, 750=0.10%, 1000=0.16% lat (msec) : 2=1.07%, 4=10.03%, 10=24.74%, 20=44.21%, 50=18.65% lat (msec) : 100=0.26%, 750=0.03% cpu : usr=0.08%, sys=25.35%, ctx=9329, 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=189989: Fri Apr 10 19:44:02 2026 read: IOPS=35, BW=142KiB/s (146kB/s)(6052KiB/42499msec) clat (usec): min=29, max=624372, avg=15277.45, stdev=17309.27 lat (usec): min=30, max=624373, avg=15278.07, stdev=17309.27 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 6325], 10.00th=[ 7635], 20.00th=[ 9110], | 30.00th=[ 10421], 40.00th=[ 11863], 50.00th=[ 13566], 60.00th=[ 15533], | 70.00th=[ 17433], 80.00th=[ 20055], 90.00th=[ 24249], 95.00th=[ 28181], | 99.00th=[ 37487], 99.50th=[ 45876], 99.90th=[ 65274], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 6, max= 215, per=25.08%, avg=141.70, stdev=32.15, samples=84 iops : min= 1, max= 53, avg=35.02, stdev= 7.98, samples=84 write: IOPS=36, BW=147KiB/s (150kB/s)(6236KiB/42499msec); 0 zone resets clat (usec): min=647, max=64221, avg=12338.96, stdev=9030.71 lat (usec): min=647, max=64222, avg=12343.05, stdev=9033.64 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 2409], 10.00th=[ 2737], 20.00th=[ 3490], | 30.00th=[ 5669], 40.00th=[ 8455], 50.00th=[10552], 60.00th=[12780], | 70.00th=[15795], 80.00th=[19792], 90.00th=[25035], 95.00th=[28967], | 99.00th=[40109], 99.50th=[42206], 99.90th=[52691], 99.95th=[64226], | 99.99th=[64226] bw ( KiB/s): min= 26, max= 248, per=24.76%, avg=146.31, stdev=35.07, samples=84 iops : min= 6, max= 62, avg=36.18, stdev= 8.83, samples=84 lat (usec) : 50=0.03%, 100=0.65%, 250=0.46%, 500=0.03%, 750=0.13% lat (usec) : 1000=0.29% lat (msec) : 2=1.17%, 4=10.68%, 10=23.31%, 20=43.52%, 50=19.43% lat (msec) : 100=0.26%, 750=0.03% cpu : usr=0.10%, sys=25.38%, ctx=9154, 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=565KiB/s (579kB/s), 141KiB/s-147KiB/s (144kB/s-150kB/s), io=23.4MiB (24.6MB), run=40783-42499msec WRITE: bw=592KiB/s (606kB/s), 147KiB/s-154KiB/s (150kB/s-158kB/s), io=24.6MiB (25.7MB), run=40783-42499msec rand-rw: (groupid=0, jobs=1): err= 0: pid=189981: Fri Apr 10 19:44:08 2026 read: IOPS=31, BW=125KiB/s (128kB/s)(5992KiB/47901msec) clat (msec): min=2, max=644, avg=13.59, stdev=19.09 lat (msec): min=2, max=644, avg=13.59, stdev=19.09 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 5], | 30.00th=[ 7], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 21], 90.00th=[ 28], 95.00th=[ 34], | 99.00th=[ 50], 99.50th=[ 54], 99.90th=[ 67], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 56, max= 432, per=25.37%, avg=126.07, stdev=85.71, samples=94 iops : min= 14, max= 108, avg=31.22, stdev=21.52, samples=94 write: IOPS=32, BW=131KiB/s (135kB/s)(6296KiB/47901msec); 0 zone resets clat (usec): min=4054, max=86881, avg=17389.17, stdev=11963.93 lat (usec): min=4054, max=86882, avg=17389.86, stdev=11963.96 clat percentiles (usec): | 1.00th=[ 4686], 5.00th=[ 5211], 10.00th=[ 5669], 20.00th=[ 6456], | 30.00th=[ 8094], 40.00th=[11207], 50.00th=[14222], 60.00th=[18220], | 70.00th=[22152], 80.00th=[26870], 90.00th=[33817], 95.00th=[39060], | 99.00th=[55837], 99.50th=[64226], 99.90th=[80217], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 47, max= 440, per=25.42%, avg=132.46, stdev=87.39, samples=94 iops : min= 11, max= 110, avg=32.82, stdev=21.95, samples=94 lat (msec) : 4=3.65%, 10=38.31%, 20=29.85%, 50=27.08%, 100=1.07% lat (msec) : 750=0.03% cpu : usr=0.08%, sys=13.57%, ctx=5946, 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=189982: Fri Apr 10 19:44:08 2026 read: IOPS=30, BW=123KiB/s (126kB/s)(5940KiB/48174msec) clat (msec): min=2, max=630, avg=14.24, stdev=19.26 lat (msec): min=2, max=630, avg=14.24, stdev=19.26 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 5], 20.00th=[ 5], | 30.00th=[ 6], 40.00th=[ 9], 50.00th=[ 11], 60.00th=[ 13], | 70.00th=[ 16], 80.00th=[ 22], 90.00th=[ 31], 95.00th=[ 37], | 99.00th=[ 47], 99.50th=[ 56], 99.90th=[ 67], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 31, max= 440, per=24.90%, avg=123.78, stdev=87.54, samples=94 iops : min= 7, max= 110, avg=30.65, stdev=21.98, samples=94 write: IOPS=32, BW=132KiB/s (135kB/s)(6348KiB/48174msec); 0 zone resets clat (msec): min=3, max=108, avg=16.92, stdev=11.66 lat (msec): min=3, max=108, avg=16.92, stdev=11.66 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 21], 80.00th=[ 26], 90.00th=[ 34], 95.00th=[ 40], | 99.00th=[ 54], 99.50th=[ 62], 99.90th=[ 79], 99.95th=[ 109], | 99.99th=[ 109] bw ( KiB/s): min= 55, max= 416, per=25.20%, avg=131.27, stdev=86.29, samples=94 iops : min= 13, max= 104, avg=32.52, stdev=21.67, samples=94 lat (msec) : 4=3.97%, 10=38.12%, 20=30.24%, 50=26.56%, 100=1.04% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.09%, sys=13.48%, ctx=5846, 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=189984: Fri Apr 10 19:44:08 2026 read: IOPS=31, BW=125KiB/s (128kB/s)(6028KiB/48225msec) clat (usec): min=2210, max=65463, avg=13754.08, stdev=10448.23 lat (usec): min=2210, max=65464, avg=13754.68, stdev=10448.27 clat percentiles (usec): | 1.00th=[ 3097], 5.00th=[ 3785], 10.00th=[ 4146], 20.00th=[ 4752], | 30.00th=[ 6128], 40.00th=[ 8717], 50.00th=[10421], 60.00th=[12518], | 70.00th=[15926], 80.00th=[21627], 90.00th=[29754], 95.00th=[34866], | 99.00th=[46400], 99.50th=[51643], 99.90th=[58459], 99.95th=[65274], | 99.99th=[65274] bw ( KiB/s): min= 40, max= 416, per=25.42%, avg=126.35, stdev=89.05, samples=95 iops : min= 10, max= 104, avg=31.29, stdev=22.37, samples=95 write: IOPS=32, BW=130KiB/s (133kB/s)(6260KiB/48225msec); 0 zone resets clat (msec): min=3, max=636, avg=17.46, stdev=19.80 lat (msec): min=3, max=636, avg=17.47, stdev=19.80 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 26], 90.00th=[ 33], 95.00th=[ 41], | 99.00th=[ 61], 99.50th=[ 69], 99.90th=[ 83], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 48, max= 408, per=25.16%, avg=131.06, stdev=87.35, samples=95 iops : min= 12, max= 102, avg=32.47, stdev=21.94, samples=95 lat (msec) : 4=3.78%, 10=38.64%, 20=29.59%, 50=26.53%, 100=1.43% lat (msec) : 750=0.03% cpu : usr=0.07%, sys=13.60%, ctx=5964, 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=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=189985: Fri Apr 10 19:44:08 2026 read: IOPS=31, BW=126KiB/s (129kB/s)(6052KiB/48208msec) clat (usec): min=2283, max=65648, avg=13413.81, stdev=10628.15 lat (usec): min=2283, max=65648, avg=13414.41, stdev=10628.13 clat percentiles (usec): | 1.00th=[ 3032], 5.00th=[ 3720], 10.00th=[ 4146], 20.00th=[ 4817], | 30.00th=[ 6063], 40.00th=[ 8356], 50.00th=[10028], 60.00th=[11994], | 70.00th=[15270], 80.00th=[20317], 90.00th=[28181], 95.00th=[35914], | 99.00th=[51119], 99.50th=[55837], 99.90th=[64226], 99.95th=[65799], | 99.99th=[65799] bw ( KiB/s): min= 48, max= 424, per=25.54%, avg=126.94, stdev=88.89, samples=95 iops : min= 12, max= 106, avg=31.44, stdev=22.33, samples=95 write: IOPS=32, BW=129KiB/s (132kB/s)(6236KiB/48208msec); 0 zone resets clat (msec): min=4, max=647, avg=17.80, stdev=20.17 lat (msec): min=4, max=647, avg=17.80, stdev=20.17 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 7], | 30.00th=[ 8], 40.00th=[ 11], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 28], 90.00th=[ 34], 95.00th=[ 41], | 99.00th=[ 58], 99.50th=[ 64], 99.90th=[ 109], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 48, max= 440, per=25.11%, avg=130.81, stdev=89.51, samples=95 iops : min= 12, max= 110, avg=32.41, stdev=22.50, samples=95 lat (msec) : 4=3.81%, 10=39.78%, 20=28.42%, 50=26.43%, 100=1.50% lat (msec) : 250=0.03%, 750=0.03% cpu : usr=0.07%, sys=13.50%, ctx=5864, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=498KiB/s (510kB/s), 123KiB/s-126KiB/s (126kB/s-129kB/s), io=23.4MiB (24.6MB), run=47901-48225msec WRITE: bw=521KiB/s (534kB/s), 129KiB/s-132KiB/s (132kB/s-135kB/s), io=24.6MiB (25.7MB), run=47901-48225msec 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=190011: Fri Apr 10 19:44:29 2026 read: IOPS=24, BW=399KiB/s (409kB/s)(5920KiB/14835msec) clat (usec): min=74, max=71492, avg=20107.78, stdev=10997.16 lat (usec): min=75, max=71493, avg=20108.34, stdev=10997.18 clat percentiles (usec): | 1.00th=[ 93], 5.00th=[ 172], 10.00th=[ 9634], 20.00th=[11994], | 30.00th=[13960], 40.00th=[16450], 50.00th=[18482], 60.00th=[20841], | 70.00th=[23462], 80.00th=[27395], 90.00th=[32900], 95.00th=[40633], | 99.00th=[59507], 99.50th=[60031], 99.90th=[71828], 99.95th=[71828], | 99.99th=[71828] bw ( KiB/s): min= 160, max= 606, per=24.96%, avg=394.17, stdev=126.26, samples=29 iops : min= 10, max= 37, avg=24.14, stdev= 7.91, samples=29 write: IOPS=26, BW=429KiB/s (440kB/s)(6368KiB/14835msec); 0 zone resets clat (usec): min=989, max=76156, avg=18424.24, stdev=13008.52 lat (usec): min=989, max=76158, avg=18425.24, stdev=13008.58 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 4146], 10.00th=[ 4883], 20.00th=[ 6456], | 30.00th=[10028], 40.00th=[12780], 50.00th=[15270], 60.00th=[19006], | 70.00th=[22676], 80.00th=[28181], 90.00th=[36963], 95.00th=[43779], | 99.00th=[64750], 99.50th=[71828], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 221, max= 669, per=25.78%, avg=428.14, stdev=116.30, samples=29 iops : min= 13, max= 41, avg=26.28, stdev= 7.35, samples=29 lat (usec) : 100=0.65%, 250=2.08%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.91%, 4=1.30%, 10=15.49%, 20=38.02%, 50=39.45% lat (msec) : 100=1.82% cpu : usr=0.07%, sys=28.19%, ctx=2961, 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=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=190012: Fri Apr 10 19:44:29 2026 read: IOPS=23, BW=379KiB/s (388kB/s)(5744KiB/15165msec) clat (usec): min=93, max=73788, avg=20641.25, stdev=10294.11 lat (usec): min=94, max=73788, avg=20641.83, stdev=10294.12 clat percentiles (usec): | 1.00th=[ 110], 5.00th=[ 237], 10.00th=[ 9372], 20.00th=[12387], | 30.00th=[15533], 40.00th=[17695], 50.00th=[20317], 60.00th=[22152], | 70.00th=[25035], 80.00th=[27919], 90.00th=[32113], 95.00th=[38011], | 99.00th=[51119], 99.50th=[56361], 99.90th=[73925], 99.95th=[73925], | 99.99th=[73925] bw ( KiB/s): min= 158, max= 606, per=23.74%, avg=374.83, stdev=120.41, samples=29 iops : min= 9, max= 37, avg=22.93, stdev= 7.52, samples=29 write: IOPS=26, BW=432KiB/s (442kB/s)(6544KiB/15165msec); 0 zone resets clat (usec): min=1186, max=69730, avg=18788.14, stdev=12177.03 lat (usec): min=1187, max=69731, avg=18789.51, stdev=12177.05 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 4490], 10.00th=[ 5080], 20.00th=[ 7898], | 30.00th=[11338], 40.00th=[13304], 50.00th=[16188], 60.00th=[18482], | 70.00th=[23462], 80.00th=[27919], 90.00th=[38011], 95.00th=[42206], | 99.00th=[54789], 99.50th=[56886], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 256, max= 606, per=25.18%, avg=418.17, stdev=90.08, samples=29 iops : min= 16, max= 37, avg=25.66, stdev= 5.61, samples=29 lat (usec) : 100=0.13%, 250=2.21%, 500=0.13% lat (msec) : 2=0.65%, 4=1.30%, 10=14.84%, 20=37.37%, 50=41.67% lat (msec) : 100=1.69% cpu : usr=0.03%, sys=28.58%, ctx=3038, 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=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=190013: Fri Apr 10 19:44:29 2026 read: IOPS=25, BW=414KiB/s (424kB/s)(6256KiB/15103msec) clat (usec): min=39, max=70004, avg=21192.73, stdev=11362.56 lat (usec): min=40, max=70005, avg=21193.36, stdev=11362.58 clat percentiles (usec): | 1.00th=[ 98], 5.00th=[ 8291], 10.00th=[10552], 20.00th=[12911], | 30.00th=[15139], 40.00th=[17171], 50.00th=[19530], 60.00th=[21627], | 70.00th=[23987], 80.00th=[28181], 90.00th=[35914], 95.00th=[44303], | 99.00th=[57410], 99.50th=[65799], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 192, max= 672, per=26.16%, avg=413.00, stdev=115.42, samples=29 iops : min= 12, max= 42, avg=25.31, stdev= 7.15, samples=29 write: IOPS=24, BW=399KiB/s (409kB/s)(6032KiB/15103msec); 0 zone resets clat (usec): min=2235, max=69207, avg=18009.76, stdev=11182.73 lat (usec): min=2236, max=69208, avg=18010.92, stdev=11182.76 clat percentiles (usec): | 1.00th=[ 3163], 5.00th=[ 4686], 10.00th=[ 5604], 20.00th=[ 8094], | 30.00th=[10945], 40.00th=[12911], 50.00th=[15664], 60.00th=[19006], | 70.00th=[22676], 80.00th=[26608], 90.00th=[33817], 95.00th=[39584], | 99.00th=[51119], 99.50th=[56886], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 191, max= 608, per=23.31%, avg=387.24, stdev=128.26, samples=29 iops : min= 11, max= 38, avg=23.69, stdev= 8.14, samples=29 lat (usec) : 50=0.13%, 100=0.52%, 250=1.43%, 500=0.13% lat (msec) : 4=1.30%, 10=14.06%, 20=39.84%, 50=40.62%, 100=1.95% cpu : usr=0.05%, sys=27.87%, ctx=3023, 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=190014: Fri Apr 10 19:44:29 2026 read: IOPS=25, BW=414KiB/s (424kB/s)(6032KiB/14567msec) clat (usec): min=49, max=66941, avg=19466.31, stdev=10769.42 lat (usec): min=50, max=66941, avg=19467.01, stdev=10769.23 clat percentiles (usec): | 1.00th=[ 83], 5.00th=[ 133], 10.00th=[ 9634], 20.00th=[11863], | 30.00th=[14484], 40.00th=[15795], 50.00th=[18220], 60.00th=[20579], | 70.00th=[22938], 80.00th=[25822], 90.00th=[31327], 95.00th=[42206], | 99.00th=[53740], 99.50th=[63177], 99.90th=[66847], 99.95th=[66847], | 99.99th=[66847] bw ( KiB/s): min= 192, max= 670, per=25.88%, avg=408.61, stdev=111.94, samples=28 iops : min= 12, max= 41, avg=25.07, stdev= 6.97, samples=28 write: IOPS=26, BW=429KiB/s (440kB/s)(6256KiB/14567msec); 0 zone resets clat (usec): min=1742, max=76088, avg=18288.78, stdev=12986.48 lat (usec): min=1744, max=76090, avg=18289.79, stdev=12986.50 clat percentiles (usec): | 1.00th=[ 3523], 5.00th=[ 4424], 10.00th=[ 5145], 20.00th=[ 7111], | 30.00th=[ 9634], 40.00th=[12780], 50.00th=[15139], 60.00th=[17433], | 70.00th=[21627], 80.00th=[27657], 90.00th=[35390], 95.00th=[43779], | 99.00th=[61604], 99.50th=[70779], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 223, max= 672, per=25.72%, avg=427.29, stdev=127.83, samples=28 iops : min= 13, max= 42, avg=26.21, stdev= 8.11, samples=28 lat (usec) : 50=0.13%, 100=0.91%, 250=2.47% lat (msec) : 2=0.13%, 4=1.56%, 10=16.02%, 20=40.76%, 50=35.55% lat (msec) : 100=2.47% cpu : usr=0.08%, sys=28.29%, ctx=2920, 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=1579KiB/s (1617kB/s), 379KiB/s-414KiB/s (388kB/s-424kB/s), io=23.4MiB (24.5MB), run=14567-15165msec WRITE: bw=1662KiB/s (1702kB/s), 399KiB/s-432KiB/s (409kB/s-442kB/s), io=24.6MiB (25.8MB), run=14567-15165msec rand-rw: (groupid=0, jobs=1): err= 0: pid=190006: Fri Apr 10 19:44:30 2026 read: IOPS=22, BW=354KiB/s (363kB/s)(5920KiB/16719msec) clat (msec): min=2, max=101, avg=20.72, stdev=15.93 lat (msec): min=2, max=101, avg=20.72, stdev=15.93 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 24], 80.00th=[ 33], 90.00th=[ 44], 95.00th=[ 55], | 99.00th=[ 77], 99.50th=[ 82], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 127, max= 960, per=24.40%, avg=349.42, stdev=190.05, samples=33 iops : min= 7, max= 60, avg=21.27, stdev=12.09, samples=33 write: IOPS=23, BW=381KiB/s (390kB/s)(6368KiB/16719msec); 0 zone resets clat (msec): min=4, max=103, avg=22.70, stdev=15.25 lat (msec): min=4, max=103, avg=22.70, stdev=15.25 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 34], 90.00th=[ 42], 95.00th=[ 53], | 99.00th=[ 86], 99.50th=[ 91], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 94, max= 1248, per=25.09%, avg=378.06, stdev=233.28, samples=33 iops : min= 5, max= 78, avg=23.09, stdev=14.82, samples=33 lat (msec) : 4=1.56%, 10=20.70%, 20=36.07%, 50=35.68%, 100=5.73% lat (msec) : 250=0.26% cpu : usr=0.05%, sys=13.73%, ctx=1737, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190007: Fri Apr 10 19:44:30 2026 read: IOPS=21, BW=345KiB/s (354kB/s)(5744KiB/16630msec) clat (msec): min=3, max=105, avg=20.08, stdev=14.77 lat (msec): min=3, max=105, avg=20.08, stdev=14.78 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 23], 80.00th=[ 30], 90.00th=[ 39], 95.00th=[ 50], | 99.00th=[ 77], 99.50th=[ 88], 99.90th=[ 106], 99.95th=[ 106], | 99.99th=[ 106] bw ( KiB/s): min= 158, max= 896, per=23.45%, avg=335.84, stdev=143.68, samples=32 iops : min= 9, max= 56, avg=20.41, stdev= 9.15, samples=32 write: IOPS=24, BW=394KiB/s (403kB/s)(6544KiB/16630msec); 0 zone resets clat (usec): min=5908, max=91738, avg=22927.96, stdev=13989.85 lat (usec): min=5909, max=91740, avg=22929.27, stdev=13989.88 clat percentiles (usec): | 1.00th=[ 6521], 5.00th=[ 7701], 10.00th=[ 8717], 20.00th=[11207], | 30.00th=[13435], 40.00th=[16057], 50.00th=[19006], 60.00th=[23725], | 70.00th=[28443], 80.00th=[32900], 90.00th=[40633], 95.00th=[48497], | 99.00th=[68682], 99.50th=[83362], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 128, max= 1280, per=25.04%, avg=377.28, stdev=221.67, samples=32 iops : min= 8, max= 80, avg=23.00, stdev=14.06, samples=32 lat (msec) : 4=0.13%, 10=19.27%, 20=39.32%, 50=36.98%, 100=4.17% lat (msec) : 250=0.13% cpu : usr=0.05%, sys=14.17%, ctx=1826, 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=190008: Fri Apr 10 19:44:30 2026 read: IOPS=23, BW=376KiB/s (385kB/s)(6256KiB/16628msec) clat (msec): min=3, max=107, avg=19.29, stdev=14.70 lat (msec): min=3, max=107, avg=19.29, stdev=14.70 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 23], 80.00th=[ 28], 90.00th=[ 39], 95.00th=[ 52], | 99.00th=[ 70], 99.50th=[ 80], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 95, max= 1280, per=25.58%, avg=366.34, stdev=234.89, samples=32 iops : min= 5, max= 80, avg=22.31, stdev=14.86, samples=32 write: IOPS=22, BW=363KiB/s (371kB/s)(6032KiB/16628msec); 0 zone resets clat (msec): min=5, max=112, avg=23.99, stdev=15.21 lat (msec): min=5, max=112, avg=24.00, stdev=15.21 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 35], 90.00th=[ 43], 95.00th=[ 54], | 99.00th=[ 77], 99.50th=[ 86], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 126, max= 960, per=22.81%, avg=343.75, stdev=161.87, samples=32 iops : min= 7, max= 60, avg=20.91, stdev=10.28, samples=32 lat (msec) : 4=0.13%, 10=23.05%, 20=33.98%, 50=36.98%, 100=5.60% lat (msec) : 250=0.26% cpu : usr=0.09%, sys=13.84%, ctx=1707, 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=190009: Fri Apr 10 19:44:30 2026 read: IOPS=22, BW=362KiB/s (371kB/s)(6032KiB/16643msec) clat (usec): min=3226, max=92798, avg=18916.99, stdev=14729.61 lat (usec): min=3226, max=92799, avg=18917.71, stdev=14729.65 clat percentiles (usec): | 1.00th=[ 4359], 5.00th=[ 5735], 10.00th=[ 6128], 20.00th=[ 7439], | 30.00th=[10421], 40.00th=[12125], 50.00th=[14091], 60.00th=[16712], | 70.00th=[20579], 80.00th=[25822], 90.00th=[38536], 95.00th=[49546], | 99.00th=[80217], 99.50th=[90702], 99.90th=[92799], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 63, max= 1152, per=24.21%, avg=346.63, stdev=209.71, samples=32 iops : min= 3, max= 72, avg=21.09, stdev=13.38, samples=32 write: IOPS=23, BW=376KiB/s (385kB/s)(6256KiB/16643msec); 0 zone resets clat (msec): min=5, max=113, avg=24.23, stdev=16.26 lat (msec): min=5, max=113, avg=24.23, stdev=16.26 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 44], 95.00th=[ 55], | 99.00th=[ 86], 99.50th=[ 107], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 96, max= 992, per=24.07%, avg=362.75, stdev=167.96, samples=32 iops : min= 6, max= 62, avg=22.12, stdev=10.64, samples=32 lat (msec) : 4=0.39%, 10=21.09%, 20=39.19%, 50=33.72%, 100=5.34% lat (msec) : 250=0.26% cpu : usr=0.11%, sys=13.92%, ctx=1708, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1433KiB/s (1467kB/s), 345KiB/s-376KiB/s (354kB/s-385kB/s), io=23.4MiB (24.5MB), run=16628-16719msec WRITE: bw=1507KiB/s (1543kB/s), 363KiB/s-394KiB/s (371kB/s-403kB/s), io=24.6MiB (25.8MB), run=16628-16719msec 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=190022: Fri Apr 10 19:44:39 2026 read: IOPS=3, BW=3209KiB/s (3286kB/s)(7168KiB/2234msec) clat (usec): min=530, max=135358, avg=88908.70, stdev=60753.16 lat (usec): min=532, max=135360, avg=88910.12, stdev=60753.06 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 611], | 30.00th=[116917], 40.00th=[116917], 50.00th=[117965], 60.00th=[120062], | 70.00th=[120062], 80.00th=[131597], 90.00th=[135267], 95.00th=[135267], | 99.00th=[135267], 99.50th=[135267], 99.90th=[135267], 99.95th=[135267], | 99.99th=[135267] bw ( KiB/s): min= 2048, max= 5206, per=55.76%, avg=3783.33, stdev=1602.05, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2292KiB/s (2347kB/s)(5120KiB/2234msec); 0 zone resets clat (msec): min=196, max=628, avg=315.81, stdev=176.94 lat (msec): min=196, max=628, avg=315.88, stdev=176.98 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 253], 60.00th=[ 253], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 2048, max= 4096, per=28.74%, avg=2730.67, stdev=1182.41, samples=3 iops : min= 2, max= 4, avg= 2.67, stdev= 1.15, samples=3 lat (usec) : 750=16.67% lat (msec) : 250=58.33%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=46.26%, ctx=502, 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=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=190023: Fri Apr 10 19:44:39 2026 read: IOPS=0, BW=679KiB/s (695kB/s)(2048KiB/3018msec) clat (msec): min=147, max=228, avg=187.97, stdev=57.51 lat (msec): min=147, max=228, avg=187.98, stdev=57.51 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 230], | 70.00th=[ 230], 80.00th=[ 230], 90.00th=[ 230], 95.00th=[ 230], | 99.00th=[ 230], 99.50th=[ 230], 99.90th=[ 230], 99.95th=[ 230], | 99.99th=[ 230] bw ( KiB/s): min= 1738, max= 1980, per=27.40%, avg=1859.00, stdev=171.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3393KiB/s (3474kB/s)(10.0MiB/3018msec); 0 zone resets clat (msec): min=141, max=588, avg=261.80, stdev=141.88 lat (msec): min=141, max=588, avg=261.85, stdev=141.87 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 150], | 30.00th=[ 157], 40.00th=[ 171], 50.00th=[ 205], 60.00th=[ 257], | 70.00th=[ 259], 80.00th=[ 275], 90.00th=[ 418], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 1738, max= 4096, per=36.56%, avg=3472.75, stdev=1158.25, samples=4 iops : min= 1, max= 4, avg= 3.00, stdev= 1.41, samples=4 lat (msec) : 250=58.33%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=49.22%, ctx=254, 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=190024: Fri Apr 10 19:44:39 2026 read: IOPS=2, BW=2955KiB/s (3026kB/s)(6144KiB/2079msec) clat (usec): min=503, max=221309, avg=132314.67, stdev=74886.85 lat (usec): min=505, max=221310, avg=132315.97, stdev=74886.85 clat percentiles (usec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[116917], | 30.00th=[116917], 40.00th=[121111], 50.00th=[121111], 60.00th=[162530], | 70.00th=[170918], 80.00th=[170918], 90.00th=[221250], 95.00th=[221250], | 99.00th=[221250], 99.50th=[221250], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 4096, max= 4096, per=60.37%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2955KiB/s (3026kB/s)(6144KiB/2079msec); 0 zone resets clat (msec): min=153, max=399, avg=212.76, stdev=93.06 lat (msec): min=153, max=399, avg=212.81, stdev=93.07 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 171], 50.00th=[ 171], 60.00th=[ 190], | 70.00th=[ 203], 80.00th=[ 203], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 2048, max= 4096, per=33.76%, avg=3207.00, stdev=1050.36, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=83.33%, 500=8.33% cpu : usr=0.00%, sys=50.34%, ctx=468, 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=190025: Fri Apr 10 19:44:39 2026 read: IOPS=2, BW=2512KiB/s (2573kB/s)(5120KiB/2038msec) clat (usec): min=414, max=172201, avg=79855.80, stdev=76464.48 lat (usec): min=415, max=172203, avg=79857.01, stdev=76464.60 clat percentiles (usec): | 1.00th=[ 416], 5.00th=[ 416], 10.00th=[ 416], 20.00th=[ 416], | 30.00th=[ 627], 40.00th=[ 627], 50.00th=[107480], 60.00th=[107480], | 70.00th=[119014], 80.00th=[119014], 90.00th=[173016], 95.00th=[173016], | 99.00th=[173016], 99.50th=[173016], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=3, BW=3517KiB/s (3602kB/s)(7168KiB/2038msec); 0 zone resets clat (msec): min=176, max=302, avg=228.06, stdev=52.66 lat (msec): min=176, max=302, avg=228.15, stdev=52.67 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 182], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 203], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 275], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 1738, max= 6144, per=41.48%, avg=3941.00, stdev=3115.51, samples=2 iops : min= 1, max= 6, avg= 3.50, stdev= 3.54, samples=2 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=58.33%, 500=25.00% cpu : usr=0.10%, sys=58.08%, ctx=683, 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=6786KiB/s (6949kB/s), 679KiB/s-3209KiB/s (695kB/s-3286kB/s), io=20.0MiB (20.0MB), run=2038-3018msec WRITE: bw=9500KiB/s (9728kB/s), 2292KiB/s-3517KiB/s (2347kB/s-3602kB/s), io=28.0MiB (29.4MB), run=2038-3018msec rand-rw: (groupid=0, jobs=1): err= 0: pid=190027: Fri Apr 10 19:44:39 2026 read: IOPS=2, BW=2568KiB/s (2630kB/s)(7168KiB/2791msec) clat (msec): min=37, max=491, avg=148.62, stdev=155.11 lat (msec): min=37, max=491, avg=148.62, stdev=155.11 clat percentiles (msec): | 1.00th=[ 38], 5.00th=[ 38], 10.00th=[ 38], 20.00th=[ 67], | 30.00th=[ 73], 40.00th=[ 73], 50.00th=[ 117], 60.00th=[ 120], | 70.00th=[ 120], 80.00th=[ 136], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 1787, max= 4096, per=44.34%, avg=3006.75, stdev=1262.26, samples=4 iops : min= 1, max= 4, avg= 2.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1834KiB/s (1878kB/s)(5120KiB/2791msec); 0 zone resets clat (msec): min=92, max=971, avg=307.99, stdev=373.76 lat (msec): min=92, max=971, avg=308.05, stdev=373.76 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 92], | 30.00th=[ 105], 40.00th=[ 105], 50.00th=[ 165], 60.00th=[ 165], | 70.00th=[ 207], 80.00th=[ 207], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 2048, max= 6144, per=43.14%, avg=4096.00, stdev=2896.31, samples=2 iops : min= 2, max= 6, avg= 4.00, stdev= 2.83, samples=2 lat (msec) : 50=8.33%, 100=25.00%, 250=50.00%, 500=8.33%, 1000=8.33% cpu : usr=0.00%, sys=16.38%, ctx=148, 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=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=190028: Fri Apr 10 19:44:39 2026 read: IOPS=0, BW=678KiB/s (694kB/s)(2048KiB/3020msec) clat (msec): min=54, max=307, avg=180.86, stdev=178.87 lat (msec): min=54, max=307, avg=180.86, stdev=178.87 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 55], | 30.00th=[ 55], 40.00th=[ 55], 50.00th=[ 55], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 1738, max= 2048, per=27.92%, avg=1893.00, stdev=219.20, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3391KiB/s (3472kB/s)(10.0MiB/3020msec); 0 zone resets clat (msec): min=77, max=518, avg=253.81, stdev=139.74 lat (msec): min=77, max=518, avg=253.89, stdev=139.73 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 136], | 30.00th=[ 150], 40.00th=[ 159], 50.00th=[ 171], 60.00th=[ 262], | 70.00th=[ 313], 80.00th=[ 372], 90.00th=[ 380], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 2048, max= 4096, per=32.36%, avg=3072.00, stdev=1182.41, samples=4 iops : min= 2, max= 4, avg= 3.00, stdev= 1.15, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=30.37%, ctx=237, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190029: Fri Apr 10 19:44:39 2026 read: IOPS=2, BW=2226KiB/s (2280kB/s)(6144KiB/2760msec) clat (msec): min=45, max=392, avg=223.01, stdev=151.68 lat (msec): min=45, max=392, avg=223.01, stdev=151.68 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 46], 10.00th=[ 46], 20.00th=[ 61], | 30.00th=[ 61], 40.00th=[ 180], 50.00th=[ 180], 60.00th=[ 292], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 2048, max= 4096, per=50.34%, avg=3413.33, stdev=1182.41, samples=3 iops : min= 2, max= 4, avg= 3.33, stdev= 1.15, samples=3 write: IOPS=2, BW=2226KiB/s (2280kB/s)(6144KiB/2760msec); 0 zone resets clat (msec): min=65, max=530, avg=201.29, stdev=168.81 lat (msec): min=65, max=530, avg=201.36, stdev=168.81 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 146], 50.00th=[ 146], 60.00th=[ 182], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 2048, max= 3549, per=25.52%, avg=2423.25, stdev=750.50, samples=4 iops : min= 2, max= 3, avg= 2.25, stdev= 0.50, samples=4 lat (msec) : 50=8.33%, 100=25.00%, 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=13.99%, ctx=155, 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=190030: Fri Apr 10 19:44:39 2026 read: IOPS=1, BW=1712KiB/s (1753kB/s)(5120KiB/2990msec) clat (msec): min=37, max=478, avg=235.19, stdev=195.26 lat (msec): min=37, max=478, avg=235.20, stdev=195.26 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 39], 10.00th=[ 39], 20.00th=[ 39], | 30.00th=[ 53], 40.00th=[ 53], 50.00th=[ 228], 60.00th=[ 228], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 2048, max= 4096, per=45.30%, avg=3072.00, stdev=1448.15, samples=2 iops : min= 2, max= 4, avg= 3.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2397KiB/s (2455kB/s)(7168KiB/2990msec); 0 zone resets clat (msec): min=59, max=523, avg=227.53, stdev=155.02 lat (msec): min=59, max=523, avg=227.60, stdev=155.03 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 79], | 30.00th=[ 182], 40.00th=[ 182], 50.00th=[ 211], 60.00th=[ 268], | 70.00th=[ 268], 80.00th=[ 271], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 1753, max= 4096, per=27.73%, avg=2632.33, stdev=1276.13, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 250=25.00%, 500=33.33%, 750=8.33% cpu : usr=0.00%, sys=17.20%, ctx=127, 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=6781KiB/s (6944kB/s), 678KiB/s-2568KiB/s (694kB/s-2630kB/s), io=20.0MiB (20.0MB), run=2760-3020msec WRITE: bw=9494KiB/s (9722kB/s), 1834KiB/s-3391KiB/s (1878kB/s-3472kB/s), io=28.0MiB (29.4MB), run=2760-3020msec 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=190036: Fri Apr 10 19:44:47 2026 read: IOPS=2, BW=8480KiB/s (8684kB/s)(12.0MiB/1449msec) clat (msec): min=367, max=622, avg=466.53, stdev=136.39 lat (msec): min=367, max=622, avg=466.53, stdev=136.39 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=17.46%, ctx=72, 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=190037: Fri Apr 10 19:44:47 2026 read: IOPS=0, BW=2792KiB/s (2859kB/s)(4096KiB/1467msec) clat (nsec): min=160460k, max=160460k, avg=160459949.00, stdev= 0.00 lat (nsec): min=160463k, max=160463k, avg=160462719.00, stdev= 0.00 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=[ 161], | 70.00th=[ 161], 80.00th=[ 161], 90.00th=[ 161], 95.00th=[ 161], | 99.00th=[ 161], 99.50th=[ 161], 99.90th=[ 161], 99.95th=[ 161], | 99.99th=[ 161] bw ( KiB/s): min= 7571, max= 7571, per=67.79%, avg=7571.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5584KiB/s (5718kB/s)(8192KiB/1467msec); 0 zone resets clat (msec): min=570, max=691, avg=631.28, stdev=85.55 lat (msec): min=571, max=692, avg=631.56, stdev=85.56 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=[ 693], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 8192, max= 8192, per=46.20%, 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=66.67% cpu : usr=0.00%, sys=19.51%, ctx=97, 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=190038: Fri Apr 10 19:44:47 2026 write: IOPS=1, BW=6649KiB/s (6809kB/s)(12.0MiB/1848msec); 0 zone resets clat (msec): min=119, max=1002, avg=598.18, stdev=446.18 lat (msec): min=119, max=1003, avg=598.46, stdev=446.33 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 121], | 30.00th=[ 121], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 8159, max= 8159, per=46.02%, avg=8159.00, 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=0.00%, sys=15.05%, ctx=80, 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=190039: Fri Apr 10 19:44:47 2026 write: IOPS=1, BW=7699KiB/s (7884kB/s)(12.0MiB/1596msec); 0 zone resets clat (msec): min=210, max=1103, avg=516.83, stdev=508.13 lat (msec): min=211, max=1103, avg=517.14, stdev=508.09 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min=15114, max=15114, per=85.24%, avg=15114.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 250=66.67%, 2000=33.33% cpu : usr=0.06%, sys=15.67%, ctx=82, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=10.9MiB/s (11.4MB/s), 2792KiB/s-8480KiB/s (2859kB/s-8684kB/s), io=16.0MiB (16.8MB), run=1449-1467msec WRITE: bw=17.3MiB/s (18.2MB/s), 5584KiB/s-7699KiB/s (5718kB/s-7884kB/s), io=32.0MiB (33.6MB), run=1467-1848msec rand-rw: (groupid=0, jobs=1): err= 0: pid=190041: Fri Apr 10 19:44:48 2026 read: IOPS=2, BW=9467KiB/s (9694kB/s)(12.0MiB/1298msec) clat (msec): min=386, max=478, avg=425.69, stdev=47.50 lat (msec): min=386, max=478, avg=425.69, stdev=47.50 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7670, max= 8159, per=72.22%, avg=7914.50, stdev=345.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=50.81%, ctx=2590, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=190042: Fri Apr 10 19:44:48 2026 read: IOPS=0, BW=2740KiB/s (2806kB/s)(4096KiB/1495msec) clat (nsec): min=456081k, max=456081k, avg=456080735.00, stdev= 0.00 lat (nsec): min=456083k, max=456083k, avg=456083165.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7742, max= 7742, per=70.65%, avg=7742.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=5480KiB/s (5611kB/s)(8192KiB/1495msec); 0 zone resets clat (msec): min=421, max=580, avg=500.92, stdev=112.81 lat (msec): min=421, max=580, avg=501.19, stdev=112.83 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 584], 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= 8159, max= 8159, per=45.94%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=21.89%, ctx=640, 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=190043: Fri Apr 10 19:44:48 2026 write: IOPS=1, BW=6660KiB/s (6820kB/s)(12.0MiB/1845msec); 0 zone resets clat (msec): min=64, max=1391, avg=608.63, stdev=694.86 lat (msec): min=65, max=1391, avg=608.93, stdev=694.88 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 65], | 30.00th=[ 65], 40.00th=[ 372], 50.00th=[ 372], 60.00th=[ 372], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 8192, max= 8192, per=46.13%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=11.88%, ctx=52, 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=190044: Fri Apr 10 19:44:48 2026 write: IOPS=1, BW=7447KiB/s (7626kB/s)(12.0MiB/1650msec); 0 zone resets clat (msec): min=147, max=1074, avg=542.62, stdev=478.34 lat (msec): min=147, max=1074, avg=542.89, stdev=478.32 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7288, max= 8159, per=43.49%, avg=7723.50, stdev=615.89, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=16.49%, ctx=61, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=10.7MiB/s (11.2MB/s), 2740KiB/s-9467KiB/s (2806kB/s-9694kB/s), io=16.0MiB (16.8MB), run=1298-1495msec WRITE: bw=17.3MiB/s (18.2MB/s), 5480KiB/s-7447KiB/s (5611kB/s-7626kB/s), io=32.0MiB (33.6MB), run=1495-1845msec