On 03/22/16 19:44, Andi Kleen wrote:
(1) One is we reduce the number of lazy_max_pages (right now its around 32MB per core worth of pages).diff --git a/mm/vmalloc.c b/mm/vmalloc.c index aa3891e..2720f4f 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -564,7 +564,7 @@ static unsigned long lazy_max_pages(void) log = fls(num_online_cpus()); - return log * (32UL * 1024 * 1024 / PAGE_SIZE); + return log * (8UL * 1024 * 1024 / PAGE_SIZE); }This seems like the right fix to me. Perhaps even make it somewhat smaller. Even on larger systems it's probably fine because they have a lot more cores/threads these days, so it will be still sufficiently large.
Thanks Andi. I'll post a patch then. Regards, Joel
-Andi
