On Thu, 14 Feb 2013 01:19:20 -0300, Ciro Iriarte <cyruspy@gmail.com>
wrote:
> 2013/2/14 christopher barry <cbarry@rjmetrics.com>Why the SSD cache? Why not just use the SSD.
>
>>
>> Why not RAM? Build a box w/256G or more, and keep them all in tmpfs
>> during operation. (ditch Solaris. It was cool once, but...)
>>
>> Copy them up into tmpfs on boot, then cron an rsync to disk between
>> polling or even occasionally, depending on pain tolerance.
>>
>> -C
>>
>>
> Hmm, well, I could only steal a machine with 64GB of RAM this time, but
ZFS
> + SSD cache + regular spindles sounds cleaner that rsync of 150GB every
2
> hours..
Having the filesystem layer dealing with the caching is likely to add even
more overhead, you're also relying on the cache to actually cache the
things you are accessing.
I would first ditch Solaris and see if the performance changes.
How long does it take to run /one/ instance of the poller?
adam.
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