Re: squid die (malloc error) on AIX 4.2.1

> At 09:33 11.09.97 -0400, you wrote:
> >On Thu, 11 Sep 1997, Mike Shoyher wrote:
> >> Try NOVM flavor. I use NOVM with 16 Gb cache and it is working fine.
> >Is there a performance degradation involved by not letting Squid use all
> >the memory it needs?
>
> In 'classic' flavor you simply cannot limit amount of used memory.
> Squid will use all memory it need plus some memory for URL index and for
> cache_mem.
>
> I see no difference in perfomance between NOVM and 'classic' versions. Look
> at the test on http://squid.nlanr.net.
>
Every object takes about 64-Byte in core memory.. The main objective is to
have no paging and/or swapping activity.. It's easy to calculate the needed
memory when you know the size of the disk..
If you have a cache disk of 16-GByte, and assuming the average object-size is
4-KByte, and the HOT-Cache is "0-bytes" (the NOVM uses no Hot-cache) and the
RAM usage of the AIX system is about 64-MByte, the total RAM needed in the
system is: 64M+ (16*1024 * 64/(1024*4)) = 320-MByte

I always use a simple formula to calculatie the average disk-size:
   DS = 60 * (M - H - S)
DS = Disk size in MByte
 M = RAM size in MByte
 H = Size in MByte of Hot-cache
 S = size of needed RAM by OS etc..

 DS = 60 * (320 - 0 -64) = 15360-MByte

Cheers, Henny

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