The patch titled mm: vmscan: tracepoint: account for scanned pages similarly for both ftrace and vmstat has been removed from the -mm tree. Its filename was mm-vmscan-tracepoint-account-for-scanned-pages-similarly-for-both-ftrace-and-vmstat.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: mm: vmscan: tracepoint: account for scanned pages similarly for both ftrace and vmstat From: Mel Gorman <mel@xxxxxxxxx> When correlating ftrace results with /proc/vmstat, I noticed that the reporting scripts value for "pages scanned" differed significantly. Both values were "right" depending on how you look at it. The difference is due to vmstat only counting scanning of the inactive list towards pages scanned. The analysis script for the tracepoint counts active and inactive list yielding a far higher value than vmstat. The resulting scanning/reclaim ratio looks much worse. The tracepoint is ok but this patch updates the reporting script so that the report values for scanned are similar to vmstat. Signed-off-by: Mel Gorman <mel@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- Documentation/trace/postprocess/trace-vmscan-postprocess.pl | 11 +++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff -puN Documentation/trace/postprocess/trace-vmscan-postprocess.pl~mm-vmscan-tracepoint-account-for-scanned-pages-similarly-for-both-ftrace-and-vmstat Documentation/trace/postprocess/trace-vmscan-postprocess.pl --- a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl~mm-vmscan-tracepoint-account-for-scanned-pages-similarly-for-both-ftrace-and-vmstat +++ a/Documentation/trace/postprocess/trace-vmscan-postprocess.pl @@ -373,9 +373,18 @@ EVENT_PROCESS: print " $regex_lru_isolate/o\n"; next; } + my $isolate_mode = $1; my $nr_scanned = $4; my $nr_contig_dirty = $7; - $perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned; + + # To closer match vmstat scanning statistics, only count isolate_both + # and isolate_inactive as scanning. isolate_active is rotation + # isolate_inactive == 0 + # isolate_active == 1 + # isolate_both == 2 + if ($isolate_mode != 1) { + $perprocesspid{$process_pid}->{HIGH_NR_SCANNED} += $nr_scanned; + } $perprocesspid{$process_pid}->{HIGH_NR_CONTIG_DIRTY} += $nr_contig_dirty; } elsif ($tracepoint eq "mm_vmscan_lru_shrink_inactive") { $details = $5; _ Patches currently in -mm which might be from mel@xxxxxxxxx are origin.patch linux-next.patch mm-page-allocator-adjust-the-per-cpu-counter-threshold-when-memory-is-low.patch mm-vmstat-use-a-single-setter-function-and-callback-for-adjusting-percpu-thresholds.patch mm-vmstat-use-a-single-setter-function-and-callback-for-adjusting-percpu-thresholds-fix.patch mm-vmstat-use-a-single-setter-function-and-callback-for-adjusting-percpu-thresholds-update.patch mm-vmstat-use-a-single-setter-function-and-callback-for-adjusting-percpu-thresholds-fix-set_pgdat_percpu_threshold-dont-use-for_each_online_cpu.patch writeback-io-less-balance_dirty_pages.patch writeback-consolidate-variable-names-in-balance_dirty_pages.patch writeback-per-task-rate-limit-on-balance_dirty_pages.patch writeback-per-task-rate-limit-on-balance_dirty_pages-fix.patch writeback-prevent-duplicate-balance_dirty_pages_ratelimited-calls.patch writeback-account-per-bdi-accumulated-written-pages.patch writeback-bdi-write-bandwidth-estimation.patch writeback-bdi-write-bandwidth-estimation-fix.patch writeback-show-bdi-write-bandwidth-in-debugfs.patch writeback-quit-throttling-when-bdi-dirty-pages-dropped-low.patch writeback-reduce-per-bdi-dirty-threshold-ramp-up-time.patch writeback-make-reasonable-gap-between-the-dirty-background-thresholds.patch writeback-scale-down-max-throttle-bandwidth-on-concurrent-dirtiers.patch writeback-add-trace-event-for-balance_dirty_pages.patch writeback-make-nr_to_write-a-per-file-limit.patch writeback-make-nr_to_write-a-per-file-limit-fix.patch vmscan-factor-out-kswapd-sleeping-logic-from-kswapd.patch mm-compaction-add-trace-events-for-memory-compaction-activity.patch mm-vmscan-convert-lumpy_mode-into-a-bitmask.patch mm-vmscan-reclaim-order-0-and-use-compaction-instead-of-lumpy-reclaim.patch mm-vmscan-reclaim-order-0-and-use-compaction-instead-of-lumpy-reclaim-fix.patch mm-migration-allow-migration-to-operate-asynchronously-and-avoid-synchronous-compaction-in-the-faster-path.patch mm-migration-allow-migration-to-operate-asynchronously-and-avoid-synchronous-compaction-in-the-faster-path-fix.patch mm-migration-cleanup-migrate_pages-api-by-matching-types-for-offlining-and-sync.patch mm-compaction-perform-a-faster-migration-scan-when-migrating-asynchronously.patch mm-vmscan-rename-lumpy_mode-to-reclaim_mode.patch mm-vmscan-rename-lumpy_mode-to-reclaim_mode-fix.patch mm-kswapd-stop-high-order-balancing-when-any-suitable-zone-is-balanced.patch mm-kswapd-keep-kswapd-awake-for-high-order-allocations-until-a-percentage-of-the-node-is-balanced.patch mm-kswapd-use-the-order-that-kswapd-was-reclaiming-at-for-sleeping_prematurely.patch mm-kswapd-reset-kswapd_max_order-and-classzone_idx-after-reading.patch mm-kswapd-treat-zone-all_unreclaimable-in-sleeping_prematurely-similar-to-balance_pgdat.patch mm-kswapd-use-the-classzone-idx-that-kswapd-was-using-for-sleeping_prematurely.patch thp-fix-bad_page-to-show-the-real-reason-the-page-is-bad.patch thp-mm-define-madv_hugepage.patch thp-alter-compound-get_page-put_page.patch thp-update-futex-compound-knowledge.patch thp-clear-compound-mapping.patch thp-add-native_set_pmd_at.patch thp-add-pmd-paravirt-ops.patch thp-no-paravirt-version-of-pmd-ops.patch thp-export-maybe_mkwrite.patch thp-comment-reminder-in-destroy_compound_page.patch thp-config_transparent_hugepage.patch thp-config_transparent_hugepage-fix.patch thp-special-pmd_trans_-functions.patch thp-add-pmd-mangling-generic-functions.patch thp-add-pmd-mangling-generic-functions-fix-pgtableh-build-for-um.patch thp-bail-out-gup_fast-on-splitting-pmd.patch thp-pte-alloc-trans-splitting.patch thp-pte-alloc-trans-splitting-fix.patch thp-clear-page-compound.patch thp-add-pmd_huge_pte-to-mm_struct.patch thp-split_huge_page_mm-vma.patch thp-split_huge_page-paging.patch thp-clear_copy_huge_page.patch thp-_gfp_no_kswapd.patch thp-dont-alloc-harder-for-gfp-nomemalloc-even-if-nowait.patch thp-split_huge_page-anon_vma-ordering-dependency.patch thp-verify-pmd_trans_huge-isnt-leaking.patch thp-add-pagetranscompound.patch thp-skip-transhuge-pages-in-ksm-for-now.patch thp-enable-direct-defrag.patch thp-select-config_compaction-if-transparent_hugepage-enabled.patch thp-transhuge-isolate_migratepages.patch thp-disable-transparent-hugepages-by-default-on-small-systems.patch mm-migration-use-rcu_dereference_protected-when-dereferencing-the-radix-tree-slot-during-file-page-migration.patch mm-migration-use-rcu_dereference_protected-when-dereferencing-the-radix-tree-slot-during-file-page-migration-fix.patch add-debugging-aid-for-memory-initialisation-problems.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html