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Groups > linux.kernel > #1325860
| From | Steven Rostedt <rostedt@goodmis.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets |
| Date | 2016-02-03 20:00 +0100 |
| Message-ID | <qYaOL-5HS-27@gated-at.bofh.it> (permalink) |
| References | <qYaOK-5HS-21@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Wed, 3 Feb 2016 13:55:50 -0500 Steven Rostedt <rostedt@goodmis.org> wrote: > # grep dl /proc/sched_debug > dl_rq[0]: > .dl_nr_running : 0 > .dl_bw->bw : 996147 > .dl_bw->total_bw : -104857 > dl_rq[1]: > .dl_nr_running : 0 > .dl_bw->bw : 996147 > .dl_bw->total_bw : -104857 > dl_rq[2]: > .dl_nr_running : 0 > .dl_bw->bw : 996147 > .dl_bw->total_bw : -104857 > dl_rq[3]: > .dl_nr_running : 0 > .dl_bw->bw : 996147 > .dl_bw->total_bw : -104857 > dl_rq[4]: > .dl_nr_running : 0 > .dl_bw->bw : 996147 > .dl_bw->total_bw : -104857 > dl_rq[5]: > .dl_nr_running : 0 > .dl_bw->bw : 996147 > .dl_bw->total_bw : -104857 > dl_rq[6]: > .dl_nr_running : 0 > .dl_bw->bw : 996147 > .dl_bw->total_bw : -104857 > dl_rq[7]: > .dl_nr_running : 0 > .dl_bw->bw : 996147 > .dl_bw->total_bw : -104857 > > They all went negative! > > Not good, but we can recover... Even though we can recover, I'm betting we can easily overcommit deadline tasks here. It probably wouldn't be too hard to come up with a test case that does so. -- Steve
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[BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets Steven Rostedt <rostedt@goodmis.org> - 2016-02-03 20:00 +0100
Re: [BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets Steven Rostedt <rostedt@goodmis.org> - 2016-02-03 20:00 +0100
Re: [BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets Juri Lelli <juri.lelli@arm.com> - 2016-02-04 11:00 +0100
Re: [BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets Juri Lelli <juri.lelli@arm.com> - 2016-02-04 13:10 +0100
Re: [BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets Juri Lelli <juri.lelli@arm.com> - 2016-02-04 13:30 +0100
Re: [BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets Juri Lelli <juri.lelli@arm.com> - 2016-02-04 17:40 +0100
Re: [BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets Steven Rostedt <rostedt@goodmis.org> - 2016-02-04 18:40 +0100
Re: [BUG] Corrupted SCHED_DEADLINE bandwidth with cpusets Juri Lelli <juri.lelli@arm.com> - 2016-02-04 19:40 +0100
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