Date: Sat, 14 Dec 2013 13:59:04 -0800 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Stefan Esser <se@freebsd.org> Cc: freebsd-current@freebsd.org, kib@freebsd.org Subject: Re: SVN commit 259045 breaks -CURRENT Message-ID: <20131214215904.GA24545@troutmask.apl.washington.edu> In-Reply-To: <52ACD12A.5020906@freebsd.org> References: <52ACD12A.5020906@freebsd.org>
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On Sat, Dec 14, 2013 at 10:44:10PM +0100, Stefan Esser wrote: > I noticed a severe slowdown and network problems on my amd64 -CURRENT > system. By bisecting SVN revisions I identified the following commit > to be responsible: > > ---------------------------------------------------------------------- > r259045 | kib | 2013-12-06 22:44:13 +0100 (Fri, 06 Dec 2013) | 9 lines > > Disallow optimizations which potentially remove boundary checks > for signed values due to a compiler authors considering integer > overflow as impossible. > > The change follows suit of other projects taking the same measure. > ---------------------------------------------------------------------- > > This commit added the following line to /sys/conf/kern.mk: > > CFLAGS+= -fno-strict-overflow > > > The most obvious symptoms of the problem on my system are: > > 1) sa-spamd needs > 140 seconds to start > (instead of a few seconds) > > 2) SSH logins are very slow, many seconds of delay between connect > and password prompt, several seconds after password entry until > a command prompt appears (normally instantaneous) > Ah, so that explains the behavior I'm see. Just updated a circa Aug 3rd i386 FreeBSD to top-of-tree. My ssh logins to my work system take 30+ seconds now. :( -- steve -- Steve
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