Date: Mon, 30 Jul 2001 13:59:18 -0700 From: Kris Kennaway <kris@obsecurity.org> To: John Baldwin <jhb@FreeBSD.org> Cc: Kris Kennaway <kris@obsecurity.org>, current@FreeBSD.org Subject: Re: -current lockups Message-ID: <20010730135917.C68654@xor.obsecurity.org> In-Reply-To: <XFMail.010730092806.jhb@FreeBSD.org>; from jhb@FreeBSD.org on Mon, Jul 30, 2001 at 09:28:06AM -0700 References: <20010729190011.B810@xor.obsecurity.org> <XFMail.010730092806.jhb@FreeBSD.org>
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--O3RTKUHj+75w1tg5 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Jul 30, 2001 at 09:28:06AM -0700, John Baldwin wrote: >=20 > On 30-Jul-01 Kris Kennaway wrote: > > Hi all, > >=20 > > For the past 2 or 3 weeks my -current system has been experiencing > > temporary lockups, usually under disk load. The entire system will > > hang for around 20-30 seconds, during which time absolutely no > > network/IO/keyboard/mouse activity is accepted. Usually, after 20-30 > > seconds the system will unwedge and activity will resume, but > > sometimes it hangs forever. There are no console messages logged by > > this event. I cannot break into DDB until after system activity > > resumes normally. > >=20 > > My system is a PPro 233 using IDE drives. Has anyone else seen > > something like this? >=20 > I see this on my laptop sometimes, always accompanied by heavy disk I/O > during the entire interval. Since disk interrupts are higher priority th= an TTY > interrupts right now (no disk drivers use the PI_DISKLOW priority, partia= lly > because there is no mechanism for them to do so right now) if a continual > stream of disk interrupts keeps the disk driver ithread busy, we will sta= rve > TTY ithreads such as the one for keyboard and mouse. There's no disk activity during this period. I can hear my disks when they do work, and the machine is totally silent until it unwedges and the disk I/O resumes. Kris --O3RTKUHj+75w1tg5 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE7ZcqkWry0BWjoQKURAm4hAJ9mj1At69DCi1D17fU37CO4KYLpnQCfQl8z HpeO1ZeK8xf5CSvVknqCkng= =V5bP -----END PGP SIGNATURE----- --O3RTKUHj+75w1tg5-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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