[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Gnu-arch-users] tla library-add - high cpu
From: |
Andrew Suffield |
Subject: |
Re: [Gnu-arch-users] tla library-add - high cpu |
Date: |
Fri, 5 Sep 2003 10:43:23 +0100 |
User-agent: |
Mutt/1.5.4i |
On Fri, Sep 05, 2003 at 08:40:15AM +1000, Robert Collins wrote:
> tla library-add seems to spend most of it's time thinking, not patching
> or retrieving.
>
> For instance, in a recent tla library-add
> address@hidden/squid--HEAD--3.0 (~400 patches), into a
> clean revision library, tla took ~15 seconds to get back to the start
> and do the first patch. After that though, it spends quite some time
> doing nothing obvious, and top shows tla at 100% cpu.
>
> The archive was being accessed via sftp. It's possibly a retrieval code
> problem - or a logic problem of some sort. It's spending 30-40 seconds
> per patch, and those patches can be grabbed by sftp in about 2 seconds,
> so I suspect a bad O somewhere in tla itself.
I believe it's actually a wait-for-ack problem - library-add
repeatedly fires off a request, and sits waiting for a response,
instead of pipelining. So latency kills you.
--
.''`. ** Debian GNU/Linux ** | Andrew Suffield
: :' : http://www.debian.org/ |
`. `' |
`- -><- |
pgp6SuWm_udHs.pgp
Description: PGP signature
- [Gnu-arch-users] tla library-add - high cpu, Robert Collins, 2003/09/04
- Re: [Gnu-arch-users] tla library-add - high cpu,
Andrew Suffield <=
- [Gnu-arch-users] Re: tla library-add - high cpu, John Goerzen, 2003/09/08
- Re: [Gnu-arch-users] Re: tla library-add - high cpu, Tom Lord, 2003/09/08
- Re: [Gnu-arch-users] Re: tla library-add - high cpu, Robert Collins, 2003/09/08
- [Gnu-arch-users] Re: tla library-add - high cpu, John Goerzen, 2003/09/08
- Re: [Gnu-arch-users] Re: tla library-add - high cpu, Paul Hedderly, 2003/09/16
- [Gnu-arch-users] Re: tla library-add - high cpu, Miles Bader, 2003/09/08