From owner-freebsd-current@FreeBSD.ORG  Sat May 10 06:48:51 2003
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To: Paul Richards <paul@freebsd-services.com>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "10 May 2003 13:37:27 BST."
             <1052570246.27195.6.camel@cf.freebsd-services.com> 
Date: Sat, 10 May 2003 15:48:39 +0200
Message-ID: <22333.1052574519@critter.freebsd.dk>
cc: current@freebsd.org
Subject: Re: Interrupt latency problems 
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In message <1052570246.27195.6.camel@cf.freebsd-services.com>, Paul Richards wr
ites:
>I'm having real problems with current with heavy disk activity.
>
>When working in X and updating ports which causes a lot of disk activity
>I get *very* poor interactive responses. Keypresses can not appear for
>seconds and mouse movement is very jerky and unresponsive.
>
>I'm wondering if something is holding locks a long time in interrupt
>handlers and causing mouse/keyboard interrupts to be lost?

We have this lock called "Giant" which we're trying to get rid off...

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.