Re: [SLUG] slowdown

From: Matthew Rogers (matt@runithard.com)
Date: Tue Feb 12 2008 - 11:17:01 EST


Torrents can crash network cards/routers with ease. I had buy a new
intel hardware nic since my onboard NFORCE nick would run slow or crash
when running torrents. Also, I've had to reboot my router if I do more
than 4-5 torrents (it's crashes the router!)

Don't underestimate the torrent. There is a lot going on in a
bittorrent client.

On Tue, 2008-02-12 at 11:07 -0500, Eben King wrote:
> On Tue, 12 Feb 2008, ronan wrote:
>
> > Eben King wrote:
> >> Something's using up CPU time on my machine, but nothing shows in top nor
> >> gkrellm's strip charts, nor does any unusual network use show up in
> >> gkrellm. But bash and trn take seconds to start and exit, and the CPU speed
> >> is a constant 2.4G (normally it falls back when nothing's happening). How
> >> can I find out what it is? I can get network bandwidth from the
> >> internet-facing router for everyone combined (which is mostly me), for
> >> periods from 1m - 5h.
> >>
> > "vmstat 1" will give you details about i/o (not just network i/o), swapping,
> > etc. It will also give you the CPU usage, similar to "top", but I have often
> > seen it give good information where "top" is obviously incorrect.
> >
> > The "1" parameter is to update every one seconds. You can use whatever value
> > you like, but just like "top", the first value can't be trusted (usually
> > pretty whacky) since it will be an incomplete period.
>
> OK, I have it on 5 (that's about as fast as I can read anyhow), and it says:
>
> procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
> r b swpd free buff cache si so bi bo in cs us sy id wa
> 2 0 1248 82236 50388 1110464 0 0 0 50 1352 1029 5 2 93 0
>
> So, swap barely touched, 50 blocks per second (per 5 seconds?) out (I'm
> running a few torrents, but the total is 30-50 K/s _in_), system 93%
> idle. Otherwise seems OK. Why is it so slow then?
>

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