Messages in this thread | | | Date | Tue, 4 Aug 2009 11:22:46 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 4/4] tracing, page-allocator: Add a postprocessing script for page-allocator-related ftrace events |
| |
On Tue, 4 Aug 2009 19:12:26 +0100 Mel Gorman <mel@csn.ul.ie> wrote:
> This patch adds a simple post-processing script for the page-allocator-related > trace events. It can be used to give an indication of who the most > allocator-intensive processes are and how often the zone lock was taken > during the tracing period. Example output looks like > > find-2840 > o pages allocd = 1877 > o pages allocd under lock = 1817 > o pages freed directly = 9 > o pcpu refills = 1078 > o migrate fallbacks = 48 > - fragmentation causing = 48 > - severe = 46 > - moderate = 2 > - changed migratetype = 7
The usual way of accumulating and presenting such measurements is via /proc/vmstat. How do we justify adding a completely new and different way of doing something which we already do?
| |