[squid-dev] [PATCH] Rework acl/RegexData optimization to use SBufList

Alex Rousskov rousskov at measurement-factory.com
Mon Nov 14 17:02:57 UTC 2016

On 11/13/2016 11:02 PM, Amos Jeffries wrote:
> On 14/11/2016 6:36 p.m., Alex Rousskov wrote:
>> On 11/13/2016 10:15 PM, Amos Jeffries wrote:
>>> I think we should accumulate into two SBufList instead, one for -i and
>>> one for +i instead of switching back and forth with potentially lots of
>>> little patterns.
>> Would not forcing regexes into two different groups change the regex
>> evaluation order and, hence, make it more difficult for some admins to
>> optimize their regexes by placing frequently matching regexes earlier?
>> I am still not quite sure what problem we are trying to solve exactly
>> here, but allowing admins to control exact regex evaluation order seems
>> important [for some admins].
> Good point.
> AFAIK the goal is twofold;
> 1) removing wordlist usage.
>  It gets replaced with SBufList.
> 2) improved performance.
>  One of the often raised reasons for people still using re-writer
> helpers is that Squid regex take so long to reconfigure when big (MB)
> lists are used.

For the record, I do not plan on reviewing this patch further. I did
what I could, but there is just too much information missing for me to
reconstruct the exact intent and evaluate the results. IMHO, I should
not be parsing large raw dumps to figure out what the patch does or does
not do. I am sure you and Kinkie do not need me to finish this.

Thank you,


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