From: Finley, Brian E. [mailto:[EMAIL PROTECTED]
Sent: Sun 09/04/2006 14:49
To: [EMAIL PROTECTED]; Bernard Li
Cc: sisuite-devel@lists.sourceforge.net
Subject: Re: [Sisuite-devel] RE: e100 slowness with trunk
Heh, slob.
--------------------------
Brian
Elliott Finley
Linux Strategist, CIS
Desk: 630.252.4742
Mobile:
630.631.6621
-----Original Message-----
From: Andrea Righi
To:
Bernard Li
CC: sisuite-devel@lists.sourceforge.net; Finley, Brian E.
Sent:
Sun Apr 09 16:47:13 2006
Subject: Re: [Sisuite-devel] RE: e100 slowness with
trunk
Bernard,
stop it! I found the problem! :-)
It was the
SLOB allocator (http://lwn.net/Articles/157944/);
it's more
memory efficient than the default SLAB, but it seems that with
this
allocator rsync becomes very very slow... so better to use SLAB (in
fact
in the x86_64 config it is correctly enabled).
Moreover I checked
in the trunk the 2.6.16.2 kernel (for i386 only).. it
has some fixes and I
already did the work to properly configure it
during the tests of
today...
Cheers,
-Andrea
PS I've also added a comment about
SLOB/SLAB issue on wiki
(http://wiki.sisuite.org/BOELupdate)!
http://lwn.net/Articles/157944/
Bernard
Li wrote:
> I'd rather not downgrade the kernel at this point - hopefully
newer
> releases will fix this problem.
>
> rsync is currently
at 2.6.7 (we're using 2.6.6), so after the svn
> server is back up I will
try to see if that helps at all...
>
> Cheers,
>
>
Bernard
>
> P.S. Incidentally, I tested trunk with x86_64 with e1000
(I think)
> and it works perfectly fine, so I'm not really sure what's
going
> on...
>
