Re: [squid-users] squid3 SMP aufs storage/process

It's not like they made it difficult. I haven't successfully gotten
SMP up and running,
but being able to use configuration like this sure makes it easier:

# Uncomment and adjust the following to add a disk cache directory.
cache_dir aufs /usr/local/squid/var/cache${process_number}/squid 1024 16 256

On Sat, Mar 9, 2013 at 1:48 AM, jiluspo <jiluspo_at_smartbro.net> wrote:
> Therefore squid SMP is not stable. if we need to store more than 32KB the
> best way is to use multi-instance and peering...I wish I could use multicast
> in localhost.
>
> When would probably finish the rock for large content?
>
> I've tried in production squid3head SMP rock storage only and crashed with
> BUG 3279: HTTP reply without Date:
>
> @1kreq/sec squid3(storied worker2) vs squid2(storeurl) coss..... squid2 gets
> higher hit.
> And to be honest. Squid2head runs more stable than squid3 stable.
>
>> -----Original Message-----
>> From: Alex Rousskov [mailto:rousskov_at_measurement-factory.com]
>> Sent: Saturday, March 09, 2013 3:03 PM
>> To: squid-users_at_squid-cache.org
>> Subject: Re: [squid-users] squid3 SMP aufs storage/process
>>
>> On 03/08/2013 11:21 PM, jiluspo wrote:
>>
>> > If squid3 configured with cache_dir aufs per process would they
>> > share to other process?
>>
>> No. Ufs-based store modules, including aufs, are currently not
>> SMP-aware. If you use them in SMP Squid (without protecting them with
>> SMP conditionals), your cache will get corrupted.
>>
>> SMP conditionals in squid.conf can be used to prevent corruption, but
>> they also prevent sharing of cache_dirs among workers.
>>
>> Rock store and memory cache are SMP-aware, share cache among workers,
>> and do not need SMP macros, but they have their own limitations (we are
>> actively working on addressing most of them).
>>
>>
>> Pick your poison,
>>
>> Alex.
>>
>> Email secured by Check Point
>

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