On Thu, Feb 24, 2011 at 04:08:47PM +0800, Shaohua Li wrote: > On Wed, 2011-02-23 at 22:45 +0800, Andrea Arcangeli wrote: > > On Wed, Feb 23, 2011 at 01:29:14PM +0800, Shaohua Li wrote: > > > Fixing it will let more people enable THP by default. but anyway we will > > > disable it now if the issue can't be fixed. > > > > Did you try what happens with transparent_hugepage=madvise? If that > > doesn't fix it, it's min_free_kbytes issue. > with madvise, the min_free_kbytes is still high (same as the 'always' > case). This high min_free_kbytes is expected and is not considered a bug as it's related to transparent hugepages being able to allocate huge pages for a long period of time. Essentially, it's a cost of using hugepages. > The result is still we have about 50M memory is reserved. you can > try at your machine with boot option 'mem=2G' and check the zoneinfo > output. > Is the actual free memory around the 50M mark or is it far higher than it should be? -- Mel Gorman SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx 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>