Re: [squid-users] Recommended Cache Settings for cache_mem

Joel Jaeggli disse na ultima mensagem:
> Jeff Pang wrote:
>> 2007/7/4, Michel Santos <michel@lucenet.com.br>:
>>>
>>> Snow Wolf disse na ultima mensagem:
>>> >>From my experience,when squid has used full of cache_dir close to
>>> > 20-30G,the OS would become very high-load due to the disk cache
>>> > swap.So I think even you have 160G disk,you may not set the cache_dir
>>> > bigger than 20G.
>>> >
>
> The real measure here is number of i/o's per second per spindle...
> you'll something on the order of 50-100 from 7200 rpm disks (read
> service time is around 20ms) given that not all activities (writes)
> require an immediate seek. In the context of squid, fast disks or lots
> of disks are more important than large disks because scaling comes from
> the number of requests that can be served....
>

I better hold my peace here ...

>>> ahem ... so I would need 8 x 160G disks in order getting 160G of
>>> cache_dir
>>> or 4 x 250 also would do it? And the rest of each disk is used by this
>>> "disk cache swap" thing?
>>>
>
> the rest of the disk is empty.
>

as long as they are new this empty disks are really cool but I, may be I
am kind of wierd, buy them to fill them up ;)

Michel
...

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Received on Wed Jul 04 2007 - 16:44:00 MDT