linux/Documentation/trace
Mel Gorman 7a2d19bced mm: vmscan: tracepoint: account for scanned pages similarly for both ftrace and vmstat
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@csn.ul.ie>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-12-22 19:43:33 -08:00
..
postprocess mm: vmscan: tracepoint: account for scanned pages similarly for both ftrace and vmstat 2010-12-22 19:43:33 -08:00
events-kmem.txt mm tracing: cleanup Documentation/trace/events-kmem.txt 2009-12-22 14:17:55 -08:00
events.txt Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2010-05-20 09:20:59 -07:00
ftrace-design.txt tracing/documentation: Document dynamic ftracer internals 2010-07-21 11:00:25 -04:00
ftrace.txt tracing: Add documentation for trace commands mod, traceon/traceoff 2010-04-27 16:51:49 -04:00
function-graph-fold.vim tracing: Add vim script to enable folding for function_graph traces 2009-08-26 00:32:04 -04:00
kprobetrace.txt tracing/kprobes: Support "string" type 2010-07-05 15:54:45 -03:00
mmiotrace.txt Documentation: Update mmiotrace.txt 2009-12-20 06:18:23 +01:00
ring-buffer-design.txt Documentation: update ring-buffer-design.txt 2010-01-11 09:34:07 -08:00
tracepoint-analysis.txt Documentation: Update tracepoint-analysis.txt 2009-12-20 06:18:25 +01:00
tracepoints.txt tracing: consolidate documents 2009-04-09 07:28:10 +02:00