vr.org的硬盘io真杯具 - V2EX
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vr.org的硬盘io真杯具

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  •   kingwkb 2013-05-03 11:57:04 +08:00 3549 次点击
    这是一个创建于 4546 天前的主题,其中的信息可能已经有所发展或是发生改变。
    dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 40.7537 s, 2.6 MB/s
    8 条回复    1970-01-01 08:00:00 +08:00
    tarsier
        1
    tarsier  
       2013-05-03 12:02:43 +08:00
    我的vr

    dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 0.221937 s, 472 MB/s
    iZr
        2
    iZr  
       2013-05-03 12:36:36 +08:00
    dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 0.436161 s, 240 MB/s
    xdeng
        3
    xdeng  
       2013-05-03 12:49:36 +08:00
    他这个是没有限制的 时好时慢 最怕折腾帝
    zencoding
        4
    zencoding  
       2013-05-03 12:57:43 +08:00
    root@hk:~# dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 0.438553 s, 239 MB/s
    root@hk:~# dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 1.45601 s, 72.0 MB/s
    root@hk:~# dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 0.28446 s, 369 MB/s
    root@hk:~# dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 0.25484 s, 411 MB/s
    root@hk:~# dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 0.265704 s, 395 MB/s
    helloleo
        5
    helloleo  
       2013-05-10 23:40:05 +08:00
    dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    helloleo
        6
    helloleo  
       2013-05-10 23:40:17 +08:00
    ~ dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 0.615846 s, 170 MB/s
    ericFork
        7
    ericFork  
       2013-05-11 00:29:13 +08:00
    其实用 SAN 的没见过性能好到哪去的
    thinkxen
        8
    thinkxen  
       2013-05-11 00:43:35 +08:00
    四台都是一个结果,同时测试的
    dd if=/dev/zero of=test.bin bs=1M count=100 cOnv=fdatasync
    100+0 records in
    100+0 records out
    104857600 bytes (105 MB) copied, 11.7144 seconds, 9.0 MB/s
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