Speed problem

uwp at dicke-aersche.de uwp at dicke-aersche.de
Tue Nov 12 06:28:00 EST 2002

On Mon, 11 Nov 2002, jw schultz wrote:

> What is the CPU load of rsync on the receiver?  That is
> important.

I'll check that.

>> The disks have an upper limit of 52 MB/s (ext2) respectively
>> 45 MB/s (ext3). It's an IDE RAID with 12 WD disks.
> You are giving us dribs and drabs.  Now you mention ext2
> and ext3 filesystems.  Since i'm not aware of any other OS
> that uses them i'll assume you are running some form of
> Linux.

Yes, I'm running Linux. I just wanted to show you that the system
is in fact almost sleeping by doing the rsync operation. It's
reacting fast during the transfer. The machine still stays fast
only the rsync drops.

> need to know what kernel(s) and patches you are running,
> what network cards, how much memory, and things from vmstat,
> iostat, netstat.

I'll check that too. The kernel is a standard-kernel from debian.

> Frankly, the fact that it starts out running with near
> expected performance but proceedes to decay sounds less
> like a rsync problem and more like something interesting
> happening in the kernel.

But why does it only happen with rsync ?

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