zfs send/receive: is this slow?
dan at langille.org
Thu Sep 30 01:20:50 UTC 2010
On 9/29/2010 3:57 PM, Artem Belevich wrote:
> On Wed, Sep 29, 2010 at 11:04 AM, Dan Langille<dan at langille.org> wrote:
>> It's taken about 15 hours to copy 800GB. I'm sure there's some tuning I
>> can do.
>> The system is now running:
>> # zfs send storage/bacula at transfer | zfs receive storage/compressed/bacula
> Try piping zfs data through mbuffer (misc/mbuffer in ports). I've
> found that it does help a lot to smooth out data flow and increase
> send/receive throughput even when send/receive happens on the same
> host. Run it with a buffer large enough to accommodate few seconds
> worth of write throughput for your target disks.
Thanks. I just installed it. I'll use it next time. I don't want to
interrupt this one. I'd like to see how long it takes. Then compare.
> Here's an example:
That looks really good. Thank you.
Dan Langille - http://langille.org/
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