On 16 Aug 1998, Linus Torvalds wrote:
> In article <m0z88bh-000aNFC@the-village.bc.nu>,
> Alan Cox <alan@lxorguk.ukuu.org.uk> wrote:
> >
> >Squid on 2.1.115 (with or without ac1) lasts 60 seconds on my soak test
> >before it explodes. Ditto a lot of other high load tests that touch I/O
> >or VM hard. (Note Im guessing where it dies here). Some of 2.1.x is rock
> >solid, and some bits of it are solid in non extreme use, but 2.1.x is
> >not remotely stable for real world hard use yet. Its getting there bit
> >by bit
>
> Does squid use threads? That's one of the things I've found so far and
> is fixed in pre-116-2 (which is very rough btw, but it was meant to be a
> debug release rather than anything else)
>
> Can you send me your squid setup, btw? I've been trying to get something
> to explode for the last week or so, and I don't have anything that is
> even remotely reproducible. I fixed a few bad user ID leaks in fork(),
> but they "only" resulted in one user not being able to fork ever again,
> and weren't the problem I am chasing.
>
> The other thing I fixed was some really bad stuff with threads exiting
> at the same time and screwing over badly in some cases (freeing the fs
> struct twice or not freeing it at all). That requires some really bad
> luck though (I've certainly never seen it happen, but looking at the
> sources it was obvious that it could happen), but it's also fixed in
> 2.1.116-2. Which is why I wonder whether squid might be using threads..
>
> Linus
>
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