Andrew Gabriel wrote:
> Ian Collins wrote:
>> I've just finished a small application to couple zfs_send and
>> zfs_receive through a socket to remove ssh from the equation and the
>> speed up is better than 2x.  I have a small (140K) buffer on the sending
>> side to ensure the minimum number of sent packets
>>
>> The times I get for 3.1GB of data (b101 ISO and some smaller files) to a
>> modest mirror at the receive end are:
>>
>> 1m36s for cp over NFS,
>> 2m48s for zfs send though ssh and
>> 1m14s through a socket.
>
> So the best speed is equivalent to 42MB/s.
>
> Can't tell from this what the limiting factor is (might be the disks).
>
It probably is.

> It would be interesting to try putting a buffer (5 x 42MB = 210MB
> initial stab) at the recv side and see if you get any improvement.
>

That's my next test....

-- 
Ian.

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