From: Jim Cromie <jim.cromie@domain.hid>
To: xenomai@xenomai.org
Subject: [Xenomai-core] bad/slow TSC hw detected by 2.6.17-rc1-mm1
Date: Fri, 07 Apr 2006 16:04:47 -0400 [thread overview]
Message-ID: <4436C5DF.6060005@domain.hid> (raw)
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
next reply other threads:[~2006-04-07 20:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-07 20:04 Jim Cromie [this message]
2006-04-08 8:45 ` [Xenomai-core] bad/slow TSC hw detected by 2.6.17-rc1-mm1 Jan Kiszka
2006-04-11 2:50 ` Jim Cromie
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