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  • Laccoss

    addikt

    válasz vlac99 #57167 üzenetére

    Ok, csak ugye lehet azt a 100 MB-ot cacheből kirázza, persze lehet, hogy itt tökmindegy, hogy az adott írás honnan történik.

    Azt nem írtad, hogy milyen ssd-vel tesztelted.

    ADATA SX8200 PRO 256 GB

    C:\ftproot\fio-3.9-x64>fio --name=ssdtest --filename=testfile1 --size=100M --bs=4k --iodepth=16 --rw=randwrite --randrepeat=1 --sync=1 --fsync=1
    fio: this platform does not support process shared mutexes, forcing use of threads. Use the 'thread' option to get rid of this warning.
    ssdtest: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=windowsaio, iodepth=16
    fio-3.9
    Starting 1 thread
    Jobs: 1 (f=1)
    ssdtest: (groupid=0, jobs=1): err= 0: pid=12488: Thu Sep 19 22:24:09 2019
    write: IOPS=17.4k, BW=68.1MiB/s (71.4MB/s)(100MiB/1468msec)
    slat (usec): min=3, max=181, avg= 9.46, stdev= 7.09
    clat (usec): min=24, max=11321, avg=418.57, stdev=263.21
    lat (usec): min=42, max=11340, avg=428.04, stdev=262.99
    clat percentiles (usec):
    | 1.00th=[ 46], 5.00th=[ 67], 10.00th=[ 82], 20.00th=[ 114],
    | 30.00th=[ 196], 40.00th=[ 469], 50.00th=[ 494], 60.00th=[ 515],
    | 70.00th=[ 537], 80.00th=[ 553], 90.00th=[ 594], 95.00th=[ 865],
    | 99.00th=[ 971], 99.50th=[ 988], 99.90th=[ 1139], 99.95th=[ 1172],
    | 99.99th=[11338]
    bw ( KiB/s): min=66832, max=71312, per=99.02%, avg=69072.00, stdev=3167.84, samples=2
    iops : min=16708, max=17828, avg=17268.00, stdev=791.96, samples=2
    lat (usec) : 50=1.61%, 100=14.44%, 250=14.48%, 500=21.45%, 750=41.43%
    lat (usec) : 1000=6.18%
    lat (msec) : 2=0.39%, 20=0.01%
    fsync/fdatasync/sync_file_range:
    sync (nsec): min=119, max=7884, avg=236.95, stdev=234.61
    sync percentiles (nsec):
    | 1.00th=[ 131], 5.00th=[ 139], 10.00th=[ 141], 20.00th=[ 147],
    | 30.00th=[ 153], 40.00th=[ 159], 50.00th=[ 165], 60.00th=[ 173],
    | 70.00th=[ 185], 80.00th=[ 237], 90.00th=[ 478], 95.00th=[ 700],
    | 99.00th=[ 852], 99.50th=[ 956], 99.90th=[ 1976], 99.95th=[ 2896],
    | 99.99th=[ 7904]
    cpu : usr=0.00%, sys=0.00%, ctx=0, majf=0, minf=0
    IO depths : 1=0.1%, 2=0.7%, 4=18.7%, 8=80.6%, 16=10.6%, 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=91.6%, 8=2.8%, 16=5.6%, 32=0.0%, 64=0.0%, >=64=0.0%
    issued rwts: total=0,25600,0,2706 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):
    WRITE: bw=68.1MiB/s (71.4MB/s), 68.1MiB/s-68.1MiB/s (71.4MB/s-71.4MB/s), io=100MiB (105MB), run=1468-1468msec

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