diff for duplicates of <1474300762.3916.103.camel@linux.intel.com> diff --git a/a/1.txt b/N1/1.txt index f2b360f..b59ccbd 100644 --- a/a/1.txt +++ b/N1/1.txt @@ -9,8 +9,8 @@ On Mon, 2016-09-19 at 16:11 +0900, Minchan Kim wrote: > > > > - Avoid CPU time for splitting, collapsing THP across swap out/in. > > > Yes, if you want, please give us how bad it is. > > > -> > It could be pretty bad.A A In an experiment with THP turned on and we -> > enter swap, 50% of the cpu are spent in the page compaction path.A A +> > It could be pretty bad. In an experiment with THP turned on and we +> > enter swap, 50% of the cpu are spent in the page compaction path. > It's page compaction overhead, especially, pageblock_pfn_to_page. > Why is it related to overhead THP split for swapout? > I don't understand. @@ -24,9 +24,3 @@ it back in as a single large page, the splitting and re-compaction back into a large page can be avoided. Tim - --- -To unsubscribe, send a message with 'unsubscribe linux-mm' in -the body to majordomo@kvack.org. For more info on Linux MM, -see: http://www.linux-mm.org/ . -Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a> diff --git a/a/content_digest b/N1/content_digest index 892fc83..a40d9e4 100644 --- a/a/content_digest +++ b/N1/content_digest @@ -46,8 +46,8 @@ "> > > > - Avoid CPU time for splitting, collapsing THP across swap out/in.\n" "> > > Yes, if you want, please give us how bad it is.\n" "> > > \n" - "> > It could be pretty bad.A A In an experiment with THP turned on and we\n" - "> > enter swap, 50% of the cpu are spent in the page compaction path.A A \n" + "> > It could be pretty bad.\302\240\302\240In an experiment with THP turned on and we\n" + "> > enter swap, 50% of the cpu are spent in the page compaction path.\302\240\302\240\n" "> It's page compaction overhead, especially, pageblock_pfn_to_page.\n" "> Why is it related to overhead THP split for swapout?\n" "> I don't understand.\n" @@ -60,12 +60,6 @@ "it back in as a single large page, the splitting and re-compaction\n" "back into a large page can be avoided.\n" "\n" - "Tim\n" - "\n" - "--\n" - "To unsubscribe, send a message with 'unsubscribe linux-mm' in\n" - "the body to majordomo@kvack.org. For more info on Linux MM,\n" - "see: http://www.linux-mm.org/ .\n" - "Don't email: <a href=mailto:\"dont@kvack.org\"> email@kvack.org </a>" + Tim -eca2071f77f3d629efeb8256ad7292e873daa22f6194df555394da9145469fd8 +0c000cd498d234d31582eb9ffcb40a20429b3343a72b47263ef1bf71c02e78eb
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