On Mon 21-11-11 16:48:45, Ying Han wrote: > The two memcg stats pgpgin/pgpgout have different meaning than the ones in > vmstat, which indicates that we picked a bad naming for them. It might be late > to change the stat name, but better documentation is always helpful. > > Signed-off-by: Ying Han <yinghan@xxxxxxxxxx> If not too late Acked-by: Michal Hocko <mhocko@xxxxxxx> > --- > Documentation/cgroups/memory.txt | 7 +++++-- > 1 files changed, 5 insertions(+), 2 deletions(-) > > diff --git a/Documentation/cgroups/memory.txt b/Documentation/cgroups/memory.txt > index cc0ebc5..eb6a911 100644 > --- a/Documentation/cgroups/memory.txt > +++ b/Documentation/cgroups/memory.txt > @@ -386,8 +386,11 @@ memory.stat file includes following statistics > cache - # of bytes of page cache memory. > rss - # of bytes of anonymous and swap cache memory. > mapped_file - # of bytes of mapped file (includes tmpfs/shmem) > -pgpgin - # of pages paged in (equivalent to # of charging events). > -pgpgout - # of pages paged out (equivalent to # of uncharging events). > +pgpgin - # of charging events to the memory cgroup. The charging > + event happens each time a page is accounted as either mapped > + anon page(RSS) or cache page(Page Cache) to the cgroup. > +pgpgout - # of uncharging events to the memory cgroup. The uncharging > + event happens each time a page is unaccounted from the cgroup. > swap - # of bytes of swap usage > inactive_anon - # of bytes of anonymous memory and swap cache memory on > LRU list. > -- > 1.7.3.1 > > -- > To unsubscribe from this list: send the line "unsubscribe cgroups" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>