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Date: Thu, 14 Jun 2007 14:09:41 -0400
From: Kris Kennaway <kris@obsecurity.org>
To: NOC Meganet <tec@mega.net.br>
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Cc: freebsd-performance@freebsd.org, performance@freebsd.org, smp@freebsd.org,
	Kris Kennaway <kris@obsecurity.org>
Subject: Re: BIND 9.4.1 performance on FreeBSD 6.2 vs. 7.0
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On Thu, Jun 14, 2007 at 09:36:55AM -0300, NOC Meganet wrote:
> On Thursday 14 June 2007 05:48:17 Kris Kennaway wrote:
> > 6.2 was used from CVS with libthr and the 4BSD scheduler (ULE 1.0 is
> > broken in 6.x).
> 
> just curious what is broken because I use ULE on several servers perfectly. it 
> seems to me that ULE is even faster on SMP when not having heavy load. 
> Also "calcru went backwards" issues I do not get with ULE but sporadically on 
> 4BSD scheduler kernels, specially on dualcore cpus.

ULE on 6.x and is known to have severe performance problems in some
workloads, as well as bugs that cause it to crash.  Use it at your own
peril :)

Kris