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Date:      Mon, 31 Dec 2007 13:30:10 +0200
From:      Kostik Belousov <kostikbel@gmail.com>
To:        "David E. Thiel" <lx@redundancy.redundancy.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: RELENG_7 jerky mouse and skipping sound (still a problem -BETA3)
Message-ID:  <20071231113010.GM57756@deviant.kiev.zoral.com.ua>
In-Reply-To: <20071230233017.GM73834@redundancy.redundancy.org>
References:  <200710171228.39123.mistry.7@osu.edu> <472ED12B.7040200@gmx.de> <200711070953.22154.mistry.7@osu.edu> <200711191254.08134.mistry.7@osu.edu> <b1fa29170711191022k2e3ea2afocdcd32ca0279c41a@mail.gmail.com> <4777942D.9010209@FreeBSD.org> <20071230205519.GL73834@redundancy.redundancy.org> <477817E1.7010409@FreeBSD.org> <20071230233017.GM73834@redundancy.redundancy.org>

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[-- Attachment #1 --]
On Sun, Dec 30, 2007 at 03:30:40PM -0800, David E. Thiel wrote:
> On Sun, Dec 30, 2007 at 11:12:26PM +0100, Kris Kennaway wrote:
> >> FWIW, the problem remains for me. Still terrible performance
> >> during compiles.
> > 
> > OK.  Instead of going over all of the usual questions again, can you point 
> > me to a previous mail in which you explain your observations and test 
> > results in detail?
> 
> The most recent is http://marc.info/?l=freebsd-stable&m=119428719505129&w=2, but
> it started way back at http://marc.info/?l=freebsd-current&m=118998090512027&w=2.
> 
> I've tried a lot of stuff in between, and all I've been able to narrow
> it down to is that it's not a display driver issue, and that none of
> my swap partition is getting used, so that's not the problem. During
> compiles, my UP system with ULE still gets very unresponsive when
> compiling, sometimes taking up to 10 seconds just to draw a new terminal
> window. Even changing focus with the window manager can take several
> seconds. I'd like to provide more info, but I'm not sure what stats
> are useful for this particular issue. Please let me know. 
> 
> dmesg is at http://redundancy.redundancy.org/dmesg.txt, and kernel
> config is at http://redundancy.redundancy.org/DEEPTHOUGHT. Even though
> I'm still getting reported 80-95% memory utilization and no paging,
> I'm going to get an extra gig of RAM on order to see if that improves
> things. 2G of ram for a desktop, what's the world coming to? ;)

BTW, mine similar problem completely disappeared after I switched to
SMP kernel and turned on hyperthreading on my workstation Pentium IV 3GHz.
I am able to run FPS games while doing 1 (and, most of the time, even 2)
compilations/configure run) in parallel. The scheduler used is ULE,
RELENG_7.

I believe there is something wrong with UP; I did not investigated what.

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