For those of you worried about CF's CPU scalability problem on Linux 2.2
there is apparently a kernel that Andrea Arcangeli patched that fixes this.
-Matt
> -----Original Message-----
> From: Andrea Arcangeli [mailto:[EMAIL PROTECTED]]
> Sent: Friday, December 29, 2000 11:44 AM
> To: Matt Liotta
> Cc: 'Andi Kleen'; Alan Cox; Petru Paler; Jure Pecar;
> [EMAIL PROTECTED]; [EMAIL PROTECTED]
> Subject: Re: linux 2.2.19pre and thttpd (VM-global problem?)
>
>
> On Fri, Dec 29, 2000 at 11:29:12AM -0800, Matt Liotta wrote:
> > as such doesn't scale well with Linux 2.2 on a dual CPU
> machine. Our
> > benchmarks show that we can handle more load on a single
> CPU machine then a
> > dual CPU one with Linux 2.2. However, it is encouraging to
> see that the
>
> If for whatever reason you can't use 2.4.x on it right now,
> in 2.2.19pre3aa4
> there's an hack to do tcp_sendmsg checksum and all the
> copy_user (copies
> between pagecache and userspace) with the big kernel lock
> released (so that it
> can scale better in SMP). That's ugly but people on this list
> asked for this
> feature and since it was very fast to implement it I added
> it. But don't expect
> anything like 2.4.x SMP scalability!
>
> Andrea
> -
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>
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