From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4436C5DF.6060005@domain.hid> Date: Fri, 07 Apr 2006 16:04:47 -0400 From: Jim Cromie MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: [Xenomai-core] bad/slow TSC hw detected by 2.6.17-rc1-mm1 List-Id: "Xenomai life and development \(bug reports, patches, discussions\)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: xenomai@xenomai.org FYI, Ive just built 17-rc1-mm1, and noted that the new time-keeping-system http://lwn.net/Articles/176837/ can now detect the buggy TSC on my GEODE-sc1100 cpu, and also that its apparently fixable by adding 'idle=poll' to kernel-boot-line. Apr 7 11:42:01 truck kernel: [ 19.160016] Kernel command line: console=ttyS0,115200n81 root=/dev/nfs nfsroot=192.168.42.1:/nfshost/truck nfsaddrs=192.168.42.100:192.168.42.1:192.168.42.1:255.255.255.0:soekris:eth0 panic=5 initrd=initrd-2.6.17-rc1-mm1-sk.img BOOT_IMAGE=vmlinuz-2.6.17-rc1-mm1-sk Apr 7 11:42:01 truck kernel: [ 24.314851] Time: tsc clocksource has been installed. Apr 7 11:42:01 truck kernel: [ 29.977802] TSC appears to be running slowly. Marking it as unstable Apr 7 11:42:01 truck kernel: [ 20.460000] Time: pit clocksource has been installed. Apr 7 12:35:56 truck kernel: [ 21.562573] Kernel command line: console=ttyS0,115200n81 root=/dev/nfs nfsroot=192.168.42.1:/nfshost/truck nfsaddrs=192.168.42.100:192.168.42.1:192.168.42.1:255.255.255.0:soekris:eth0 panic=5 initrd=initrd-2.6.17-rc1-mm1-sk.img idle=poll BOOT_IMAGE=vmlinuz-2.6.17-rc1-mm1-sk Apr 7 12:35:56 truck kernel: [ 21.563049] using polling idle threads. Apr 7 12:35:56 truck kernel: [ 28.393469] Time: tsc clocksource has been installed. hope this is useful, jimc