Re: SVN commit 259045 breaks -CURRENT

From: Don Lewis <truckman_at_FreeBSD.org>
Date: Sun, 15 Dec 2013 10:44:41 -0800 (PST)
On 15 Dec, Konstantin Belousov wrote:
> On Sun, Dec 15, 2013 at 05:28:14PM +0100, Marc UBM wrote:
>> On Sun, 15 Dec 2013 08:43:22 +0200
>> Konstantin Belousov <kostikbel_at_gmail.com> wrote:
>> 
>> > On Sat, Dec 14, 2013 at 09:56:04PM -0800, Steve Kargl wrote:
>> > > On Sun, Dec 15, 2013 at 07:47:22AM +0200, Konstantin Belousov wrote:
>> > > > On Sat, Dec 14, 2013 at 02:16:27PM -0800, Steve Kargl wrote:
>> > > > > On Sat, Dec 14, 2013 at 11:11:15PM +0100, Stefan Esser wrote:
>> > > > > > Am 14.12.2013 22:59, schrieb Steve Kargl:
>> > > > > > > On Sat, Dec 14, 2013 at 10:44:10PM +0100, Stefan Esser wrote:
>> > > > > > >>
>> > > > > > >> 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. :(
>> > > > > > 
>> > > > > > You may want to test the attached patch, which reverts the above
>> > > > > > mentioned commit.
>> > > > > > 
>> > > > > 
>> > > > > I probably won't get to it until tomorrow, because I had started
>> > > > > a dog-food system purge including re-installing all ports.  The
>> > > > > laptop takes a bit a time to recompile everything.
>> > > > > 
>> > > > 
>> > > > Are you all running i386, compiled with gcc ?
>> > > 
>> > > The Aug 3rd system was built with gcc.  The system upgrade I
>> > > did this morning is using clang.  I rebuilt everything and
>> > > delete old things with delete-old and delete-old-libs.
>> 
>> A kernel built with the commit reverted has not exhibited any similar
>> behavior during the whole day. I'll recompile again with the overflow
>> option enabled to see if the issue returns.
> 
> I am interested in a different experiment.  Compile the same version
> of the kernel with gcc with -fno-strict-overflow enabled.  Report if
> the same problem persist.
> 
> I am going to revert the option in several minutes, but do want see
> the result of the above test.

I have not seen the problem here:

FreeBSD scratch.catspoiler.org 11.0-CURRENT FreeBSD 11.0-CURRENT #65 r259394M: Sat Dec 14 16:16:30 PST 2013     dl_at_scratch.catspoiler.org:/usr/obj/usr/src/sys/GENERICSMB  i386

compiled with clang.
Received on Sun Dec 15 2013 - 17:57:19 UTC

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