On 2013-09-16 15:18:50 +0200, Andres Freund wrote: > > So even a tiny allocation, much smaller than any page size, succeeds, and it > > reserves a huge page. I tried the same with larger values; the kernel always > > uses huge pages, and rounds up the allocation to a multiple of the huge page > > size. > > When developing the prototype I am pretty sure I had to add the rounding > up - but I am not sure why now, because after chatting with Heikki about > it, I've looked around and the initial MAP_HUGETLB support in the kernel > (commit 4e52780d41a741fb4861ae1df2413dd816ec11b1) has support for > rounding up.
Ok, the reason for that seems to have been the following bug https://bugzilla.kernel.org/show_bug.cgi?id=56881 Greetings, Andres Freund -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
