zfs send/receive: is this slow?

Brandon Gooch jamesbrandongooch at gmail.com
Sat Oct 2 02:58:47 UTC 2010


On Fri, Oct 1, 2010 at 8:43 PM, Artem Belevich <fbsdlist at src.cx> wrote:
>> As soon as I opened this email I knew what it would say.
>>
>>
>> # time zfs send storage/bacula at transfer | mbuffer | zfs receive
>> storage/compressed/bacula-mbuffer
>> in @  197 MB/s, out @  205 MB/s, 1749 MB total, buffer   0% full
> ...
>> Big difference.  :)
>
> I'm glad it helped.
>
> Does anyone know why sending/receiving stuff via loopback is so much
> slower compared to pipe?

This may shed some light on that topic:

http://lists.freebsd.org/pipermail/freebsd-current/2010-September/019877.html


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