Re: sdirno/sfileno sizes

From: Henrik Nordstrom <hno@dont-contact.us>
Date: Sun, 25 Mar 2001 15:15:55 +0200

On i386 the size of the StoreEntry structure in 2.4 is aligned to malloc
granularity (at least on Linux), so increasing it by only 1 byte more
will cause malloc to grow it by 16 bytes.

You are most welcome to correct me if I am wrong here..

/Henrik

Adrian Chadd wrote:
>
> Hi,
>
> I'd like to bring my COSS fixes into HEAD and SQUID_2_4. A large
> chunk of the changes involve fixing COSS, but there are a few
> changes to the actual squid source tree which fix some bugs.
>
> Do people mind if I "bloat" the StoreEntry struct again? It won't
> be as bad as I've made sdirno an int8_t and sdirno an int32_t
> which bloats the struct by 1 byte over what it is now. AFter
> working with the code a little more I'm rather annoyed at
> chasing an apparent bug all day which turned out to be me
> overflowing the 25-bit swap_filen in the SToreEntry, vs
> the 32-bit swap_filen used everywhere else.. :)
>
> I think the ultimate solution to the memory usage problem
> lies elsewhere, both in abusing the "rough LRU" concept
> and a block allocator.
>
> Adrian
>
> --
> Adrian Chadd "The fact you can download a 100 megabyte file
> <adrian@creative.net.au> from half way around the world should be viewed
> as an accident and not a right."
> -- Adrian Chadd and Bill Fumerola
Received on Sun Mar 25 2001 - 06:23:11 MST

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