Re: [PATCH] mm: compaction: Avoid 100% CPU usage during compaction when a task is killed

2019-07-25 Thread Vlastimil Babka
On 7/18/19 10:57 AM, Mel Gorman wrote: > "howaboutsynergy" reported via kernel buzilla number 204165 that > compact_zone_order was consuming 100% CPU during a stress test for > prolonged periods of time. Specifically the following command, which > should exit in 10 seconds, was taking an excessive

Re: [PATCH] mm: compaction: Avoid 100% CPU usage during compaction when a task is killed

2019-07-18 Thread Andrew Morton
On Thu, 18 Jul 2019 11:48:10 + howaboutsyne...@protonmail.com wrote: > > "howaboutsynergy" reported via kernel buzilla number 204165 that > > > > I haven't included a Reported-and-tested-by as the reporters real name > > is unknown but this was caught and repaired due to their testing and >

Re: [PATCH] mm: compaction: Avoid 100% CPU usage during compaction when a task is killed

2019-07-18 Thread howaboutsynergy
‐‐‐ Original Message ‐‐‐ On Thursday, July 18, 2019 10:57 AM, Mel Gorman wrote: > "howaboutsynergy" reported via kernel buzilla number 204165 that > I haven't included a Reported-and-tested-by as the reporters real name > is unknown but this was caught and repaired due to their

[PATCH] mm: compaction: Avoid 100% CPU usage during compaction when a task is killed

2019-07-18 Thread Mel Gorman
"howaboutsynergy" reported via kernel buzilla number 204165 that compact_zone_order was consuming 100% CPU during a stress test for prolonged periods of time. Specifically the following command, which should exit in 10 seconds, was taking an excessive time to finish while the CPU was pegged at