Re: [RFC PATCH] cmdline: Hide "debug" from /proc/cmdline

2014-04-06 Thread David Timothy Strauss
On Fri, Apr 4, 2014 at 11:57 AM, Linus Torvalds wrote: > Since I haven't even heard a "my bad" from the systemd people, I'd be > inclined to say that a bit of protection for future issues would be a > good idea. Just coming back to this thread now, I'll say something. I'm a systemd maintainer, an

NUMA, migrate/N, and tuned-adm

2013-12-17 Thread David Timothy Strauss
Our system gets storms of migrate/N (and sometimes kswapd) tasks from the kernel, based on what we've seen in top [1]. This issue is unique to our hardware application servers; we run hundreds of application servers on Xen virtual hardware without this issue and the same kernel. We also have no iss

Re: NUMA, migrate/N, and tuned-adm

2013-12-17 Thread David Timothy Strauss
On Tue, Dec 17, 2013 at 10:10 AM, David Timothy Strauss wrote: > * Splitting the system with cpuset into management tasks (6 virtual > cores) and workload tasks (18 virtual cores) with > sched_relax_domain_level=2. This is based on recommendations for NUMA > systems in the cpuset