[squid-users] Tune Squid proxy to handle 90k connection

[Andre Bolinhas]

Hi

No, no cache is used.

Alex can you reply this please

>  Hi
> Well, the performance and NTLM issues that I had with persistent 
> connections goes back to squid 3.5 😳, so I never re-enabled it again 
> on new version, I'm using Squid 5.9 and 6.8 now.
>
> If you tell me that now that persistent connections are more stable 
> and inclusive is recommended to be enabled by default to gain 
> performance and also speed up NTLM/Kerberos authentication, I will 
> re-enable again on my production servers. 


On 17/05/2024 14:42, Alex Rousskov wrote:
> On 2024-05-16 19:12, Jonathan Lee wrote:
>> What about using COSS file system?
>
> Squid does not support COSS cache_dirs since v3.5. If Squid in 
> question does disk caching, then rock cache_dirs may be the best bet.
>
> Alex.
>
>
>>> On May 16, 2024, at 15:10, Andre Bolinhas wrote:
>>>
>>>  Hi
>>> Well, the performance and NTLM issues that I had with persistent 
>>> connections goes back to squid 3.5 😳, so I never re-enabled it 
>>> again on new version, I'm using Squid 5.9 and 6.8 now.
>>>
>>> If you tell me that now that persistent connections are more stable 
>>> and inclusive is recommended to be enabled by default to gain 
>>> performance and also speed up NTLM/Kerberos authentication, I will 
>>> re-enable again on my production servers.
>>>
>>> Best Regards
>>>
>>> On 16/05/2024 21:34, Alex Rousskov wrote:
>>>> On 17/05/24 02:23, Bolinhas André wrote:
>>>>
>>>>> Has I explain, by default I set those directives to off to avoid 
>>>>> high cpu consumption.
>>>>
>>>> Just FYI: In this context, when you say "default", folks will tend 
>>>> to think that you are talking about default Squid configuration 
>>>> setting (i.e. something hard-coded in Squid code) rather than the 
>>>> actual thing you are talking about (i.e. your custom Squid 
>>>> configuration).
>>>>
>>>> I do not know whether disabling persistent connections reduces CPU 
>>>> consumption in your environment. There are too many variables. In 
>>>> most cases, including NTLM authentication cases detailed by Amos, 
>>>> disabling persistent connections hurts performance, but there are 
>>>> always exceptions (and bugs).
>>>>
>>>> It is not clear (to me) whether you disable persistent connections 
>>>> because they hurt performance in your environment OR you disable 
>>>> persistent connections because _you assume_ (without evidence) that 
>>>> they hurt performance in your environment.
>>>>
>>>> If you do not know that disabling persistent connections reduces 
>>>> CPU consumption in your environment, then you should not disable 
>>>> them until you discover strong evidence that they hurt performance. 
>>>> At that point, you can share that evidence and ask for 
>>>> configuration advice based on that evidence.
>>>>
>>>>
>>>> HTH,
>>>>
>>>> Alex.
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>
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