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Groups > linux.kernel > #1313293
| From | Christoph Lameter <cl@linux.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue |
| Date | 2016-01-20 16:20 +0100 |
| Message-ID | <qT2Ib-8li-47@gated-at.bofh.it> (permalink) |
| References | (2 earlier) <qSEmt-8o1-1@gated-at.bofh.it> <qSHX4-2s1-19@gated-at.bofh.it> <qSX5M-4m2-25@gated-at.bofh.it> <qT2oO-7Xe-21@gated-at.bofh.it> <qT2Ia-8li-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, 20 Jan 2016, Thomas Gleixner wrote: > > If the user makes use of full dynticks for soft isolation (for performance, > > can live with a few interrupts...), there can be short moments of > > multitasking. "Soft" isolation? Like soft realtime ... Argh... Please stay away from corrupting the intents of the nohz full mode. > Again, you are trying to make the second step after the first one is > completed. We do not even have proper accounting when we have the ONE task > 100% case and still you try to solve problems beyond that. Please lets only deal with the one task issue. I can have "soft" isolation today by moving daemons etc off certain processors. We want definitely to run nothing else on the processor and will want to even go further with the cache allocation techniques in recent processor to limit the cache disturbances from other processors etc etc.
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Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Peter Zijlstra <peterz@infradead.org> - 2016-01-19 14:20 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Frederic Weisbecker <fweisbec@gmail.com> - 2016-01-19 18:10 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Peter Zijlstra <peterz@infradead.org> - 2016-01-20 10:20 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Frederic Weisbecker <fweisbec@gmail.com> - 2016-01-20 16:00 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Thomas Gleixner <tglx@linutronix.de> - 2016-01-20 16:20 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Christoph Lameter <cl@linux.com> - 2016-01-20 16:20 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Frederic Weisbecker <fweisbec@gmail.com> - 2016-01-20 18:00 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Frederic Weisbecker <fweisbec@gmail.com> - 2016-01-20 17:50 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Peter Zijlstra <peterz@infradead.org> - 2016-01-20 18:00 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Frederic Weisbecker <fweisbec@gmail.com> - 2016-01-20 18:30 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Peter Zijlstra <peterz@infradead.org> - 2016-01-20 19:30 +0100
Re: [RFC PATCH 4/4] sched: Upload nohz full CPU load on task enqueue/dequeue Frederic Weisbecker <fweisbec@gmail.com> - 2016-01-21 14:30 +0100
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