Date: Wed, 22 Jun 2005 01:22:21 +0200 From: Emanuel Strobl <Emanuel.strobl@gmx.net> To: freebsd-current@freebsd.org Cc: John Baldwin <jhb@FreeBSD.org> Subject: Re: lapic@2k interrukts eating CPU cycles Message-ID: <200506220122.24315@harrymail> In-Reply-To: <200506211539.26772.jhb@FreeBSD.org> References: <200506091423.39940@harrymail> <200506211539.26772.jhb@FreeBSD.org>
next in thread | previous in thread | raw e-mail | index | archive | help
--nextPart1284742.Bg3I3n372W Content-Type: text/plain; charset="iso-8859-6" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Am Dienstag, 21. Juni 2005 21:39 schrieb John Baldwin: > On Thursday 09 June 2005 08:23 am, Emanuel Strobl wrote: > > Hello, > > > > I recognized that doing a "make clean" in a simple ports takes minutes > > to finish, so I saw that "systat -vm" shows me about 80% system usage > > during that. But even if it's finished lapic keeps generating 2000 > > interrupts/sec and consuming 25% CPU usage when the machine is doning > > nothing. Any hints what I could do? I have never seen lapic before, I > > just did a fresh 6-snapshot (june) install and upgraded to yesterdays > > -current. Please find attached my kernel conf, although this time I > > use ULE the sluggish "make clean" behaviour was also with 4.2BSD (but > > I haven't looked after the CPU usage) > > > > Thanks, > > > > -Harry > > I haven't seen the clock interrupts eat up 25% CPU on my systems. Can > you capture the output of 'top -S' when your system is idle? It's not exactly reproducable since I have multiple oddities with ULE and=20 KDE. I also saw 2k lapic irqs/s with 98% idle, so it's probably not a=20 lapic problem. Is there any information about lapic available? I don't=20 know what lapic stands for (the l, if apic means=20 AdvancedProgrammableInterruptController) and what it does to generate=20 2kirq/s. Thanks, =2DHarry --nextPart1284742.Bg3I3n372W Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQBCuKEwBylq0S4AzzwRAplzAJ4nvCnwUkT6NDXMw6QsSVnqXVH9KACeJrk1 h0+FmpTfSA1TzF3rMPZLQR4= =HIyW -----END PGP SIGNATURE----- --nextPart1284742.Bg3I3n372W--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200506220122.24315>