> In this case, dd has to block after each disk write to wait for its > buffer to be (unnecessarily, as it happens, though it can't know that) > zeroed for the next write. This both imposes additional delay and > enforces a lack of overlap between each write and the next. But can't we safely assume reading /dev/zero taking zero time? I've checked that indeed get about 10GB/s from /dev/zero.
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- Re: raw/block device disc troughput Edgar Fuß
- Re: raw/block device disc troughput Eduardo Horvath
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- Re: raw/block device disc troughput Eduardo Horvath
- Re: raw/block device disc troughput Edgar Fuß
- Re: raw/block device disc troughput Eduardo Horvath
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- Re: raw/block device disc troughput Edgar Fuß
- Re: raw/block device disc troughput Edgar Fuß