and, more importantly, how can I adjust this threshold for Ubuntu 14.04 server installations?
I have standard Ubuntu 14.04 server VMs crashing due to CPU softlocks and VMWare recommends adjusting this threshold.
1 Answer
With new(er) kernel, you tune /proc/sys/kernel/watchdog_thresh instead.
(Older kernels use /proc/sys/kernel/softlockup_thresh, I think).
I add the following line to end of /etc/sysctl.conf to have it applied at boot:
kernel.watchdog_thresh=nn
where nn is a number 0 or higher.
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It'd be interesting up to which kernel version
/proc/sys/kernel/softlockup_threshis used. Mar 31, 2015 at 17:21 -
Not sure, but it's been gone for at least 2 years now: groups.google.com/forum/#!topic/linux.kernel/0TENQU5rF1U– imHemoMar 31, 2015 at 17:27