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From: Dave Jones <davej@redhat.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: imcdnzl@gmail.com, greearb@candelatech.com,
	herbert@gondor.apana.org.au, netdev@vger.kernel.org,
	stable@kernel.org, fedora-list@list.zikzak.de,
	fedoralist@kotoulas.de
Subject: Re: latest -stable breaks Squid
Date: Thu, 4 May 2006 19:47:42 -0400	[thread overview]
Message-ID: <20060504234742.GS18962@redhat.com> (raw)
In-Reply-To: <20060504.162546.88959729.davem@davemloft.net>

On Thu, May 04, 2006 at 04:25:46PM -0700, David S. Miller wrote:

 > That being said, the first thing that should be tried is reverting
 > the above mentioned change and see if the problem goes away.  If
 > so, then we need to investigate what the bandwidth delay product is
 > for the connection, and whether the socket send buffer is set large
 > enough for that size of pipe.

It's now believed (after some detective work from Herbert) that
this round of problems wasn't caused by the -stable patch, but
by a bogus update to Xen which we carry in the Fedora kernel
that sneaked in without a changelog (which is why I didn't even suspect that thing
given it worked fine previously).

Until today I had no idea just how much that thing poked into net/

Ugh.  Apologies for the false alarm.

		Dave

-- 
http://www.codemonkey.org.uk

  parent reply	other threads:[~2006-05-04 23:48 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-05-03 21:19 latest -stable breaks Squid Dave Jones
2006-05-04  0:43 ` Dave Jones
2006-05-04  1:10 ` Herbert Xu
2006-05-04  1:22   ` Ben Greear
2006-05-04  1:59     ` Ian McDonald
2006-05-04 23:25       ` David S. Miller
2006-05-04 23:30         ` Herbert Xu
2006-05-04 23:47         ` Dave Jones [this message]
2006-05-05  8:49         ` [x86_64, NET] smp_rmb() in dst_destroy() seems very expensive, ditto in kfree_skb() Eric Dumazet
2006-05-05 10:06           ` Herbert Xu
2006-05-05 16:13           ` Very long list of struct dst_entry in dst_garbage_list Eric Dumazet
2006-05-05 17:05           ` [x86_64, NET] smp_rmb() in dst_destroy() seems very expensive, ditto in kfree_skb() Andi Kleen

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