Date: Fri, 03 Apr 2009 09:35:45 +0200 From: Jedrzej Kalinowski <kalinoj1@iem.pw.edu.pl> To: <freebsd-emulation@freebsd.org> Subject: Recent qemu and timers issue Message-ID: <c948bb4de85d1b2a340ac63a7c46f6d9@iem.pw.edu.pl>
next in thread | raw e-mail | index | archive | help
Hi all, When running FreeBSD 8-CURRENT system inside a qemu machine (from the latest port by nox@freebsd.org) I have strange timer problems in the virtual machine. My logs and console are full of messages like this: calcru: runtime went backwards from 11248014678717988 usec to 119242 usec for pid 60 (ps) calcru: runtime went backwards from 11248014678921829 usec to 2516605 usec for pid 60 (ps) calcru: runtime went backwards from 7014844 usec to 6270851 usec for pid 0 (kernel) It even happens for some processes to die inside qemu guest. I tried to use all possible timers using sysctl, where I have: TSC(800) HPET(900) ACPI-safe(850) i8254(0) dummy(-1000000) None of these helped. What's more I cannot corelate this with kern.hz value set for the system. I tried to set it to the same value as host machine, bigger and smaller one. It's not a kqemu issue, happens also with -no-kqemu switch. I've already posted this issue on freebsd-current some time ago, but unfortunately noone showed interest in it.. (http://docs.freebsd.org/cgi/mid.cgi?3cd67c0d967b2464a4b40bd85582bf88) I would greatly appreciate any help or a hint - where should I look for help on this issue. Cheers, Jędrzej Kalinowski
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?c948bb4de85d1b2a340ac63a7c46f6d9>