NFS reads vs. writes

Karli Sjöberg karli.sjoberg at slu.se
Sun Jan 3 08:57:15 UTC 2016


Den 3 jan. 2016 8:54 fm skrev "Mikhail T." <mi+thun at aldan.algebra.com>:
>
> On 03.01.2016 02:16, Karli Sjöberg wrote:
>>
>> The difference between "mount" and "mount -o async" should tell you if you'd benefit from a separate log device in the pool.
>
> This is not a ZFS problem. The same filesystem is being read in both cases. The same data is being read from and written to the same filesystems. For some reason, it is much faster to read via NFS than to write to it, however.
>
> And finally, just to put the matter to rest, both ZFS-pools already have a separate zil-device (on an SSD).
>>
>> -mi

Ok, so what about the local performance? Have you run e.g. Bonnie++ in the same directory?

/K


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