AW: [squid-users] squid on 64 bit server: memory calculation diff erences with the FAQ?

How do I force compiling squid for 32 bits?

Maybe the 64-bit compilation (for an ALPHA comuter) causes the problems
described in bug 518.

Mit freundlichem Gruß / regards
 
Werner Rost
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> -----Ursprüngliche Nachricht-----
> Von: Henrik Nordstrom [mailto:hno@squid-cache.org]
> Gesendet: Dienstag, 6. Mai 2003 21:43
> An: Adam; squid-users@squid-cache.org
> Betreff: Re: [squid-users] squid on 64 bit server: memory
> calculation differences with the FAQ?
>
>
> On Tuesday 06 May 2003 19.17, Adam wrote:
>
> > However the FAQ comment "more [RAM] on 64 bit servers such
> as Alpha"
> > makes me wonder by what amount of "more" I should be calculating.
>
> This is not known as no comparable measurements have been done on 64
> bit platforms, but an estimate is that the memory requirements in
> 64bits is somewhere between 1.3 and 1.8 times the requirements for 32
> bits.
>
> > That is if 64 bit machines like the Solaris 8 Ultra 60 box I am
> > running Squid on needed (hypothetically) 15 * total GB
>
> I would probably recommend compiling Squid as a 32 bit application.
>
> But at the same time there is a few gotchas in the Solaris 32 bit
> environment which makes me doubt.. This doubt is not actually related
> to the 64 bit question but Sun took the opportunity to get rid of a
> lot of old legacy braindamage of their old 32bit API when they
> designed the 64 bit API of Solaris, making Solaris a quite nicer and
> cleaer operating system for applications running in 64 bits than
> applications running in 32 bits. However, Squid is designed and
> tested on 32 bits, and probably does not like 64 bits very well
> (well.. that said I did run Squid fine on Alpha some years back with
> only some small amount of patching required..) so in the end you
> probably get new more problems than the problems fixed by using
> 64bits, in addition to the substantial increase in memory usage.
>
> > Secondly, are there any advantages to running Squid in 64bit mode?
>
> Probably none, and quite likely more problems as very few people have
> used Squid in 64bit mode..
>
> There is some small benefits in compiling Squid with support for 64
> bit file I/O, but this should be considered highly experimental at
> this time and not recommended for production use..
>
> One notable benefit of compiling Suqid 64 bits would be if
> you need to
> make a really big Squid. A Squid compiled for 64 bits should have no
> problem with upper limit on memory usage if you can afford the
> memory.
>
> 64bits is generally a waste except for applications needing more than
> 2GB of memory or certain specific applications who benefit from the
> 64 bit integer math improvements (most applications are quite happy
> with 32 bit integer math).
>
> Regards
> Henrik
>
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Received on Wed May 07 2003 - 00:36:39 MDT