Re: [squid-users] Intermittent slow response from Squid

molybtek wrote:
> I've been able to do a little more monitoring on squid - the DNS Lookups are
> still below 1 seconds for the 5 minute averages during the times when there
> is a slowdown in squid response. And the connections averages around 5 per
> seconds, just like the time when there isn't a slow down...
>
> Just wondering are there anything else that might be causing it?

For the short list (ordered by commonality I've seen):
  * Disk I/O wait
  * DNS lag
  * RAM swapping (causing disk I/O wait)
  * CPU overload.

Amos

>
>
> Daniel Kühl wrote:
>> I can bet on DNS Server...
>>
>>
>> On Feb 4, 2009, at 9:43 AM, Moses Truong wrote:
>>
>>> We have squid running on a server with delay pools enabled. The
>>> squidclient usually responds very quickly - in less than 0.03
>>> seconds most of the time. However, there are times when this rises
>>> to over 39 seconds.
>>>
>>> There are 2 Gb of RAM, and there's about 900mb used.
>>> There's 1024 file descriptors, and the largest opened hovers around
>>> 370.
>>>
>>> Could anyone suggest what I should be looking for to track down why
>>> squid sometimes take so long to respond? Thanks.
>>>
>>
>>
>

-- 
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