On Thursday 16 June 2005 02:27, Dan Lund wrote:
> I'm having a problem that I need a little advice on.
> I'm running a guest kernel 2.4.31 on a 2.6.11 host with the skas3v8
> patch installed.
> The host is a IBM xSeries 335 with a 2.8 Ghz dual processor, 4Gb of RAM
> installed.
>
> I'm running a tmpfs of 256mb, and a memlimit of 256mb on the instance.
> Here's the situation, when I scp across to the machine a large number of
> files "scp -r /root/* [EMAIL PROTECTED]:/root" it seems to hang for a little
> bit... the console is totally unresponsive for 10 or so seconds at a
> time. (sometimes 1 - 2 mins)  and the scp transfer is stalled.

> The thing that bothers me is that the bridge I've created has 397
> overruns out of 157585 RX and 692311 TX packets.
I.e.? You mean the net is under-used?
Using synchronous UBD (CONFIG_BLK_DEV_UBD_SYNC)? That would generate the 
slowdown.

Turning it off and replacing ubd0= with ubd0s= gives the same safety without 
this big artificial slowdown (search for "bonnie++" in the archives to find a 
deep discussion of this issue).

On my homepage, the recent -bs2 prereleases contain the backport of the fix I 
included in 2.6.
-- 
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade

        

        
                
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