Gregory Maxwell wrote:
Has memcached's allocator changed? I'm somewhat surprised that that widely varying size of the page text isn't causing us fragmentation problems.
As I mentioned during the hacking days, the allocator granularity and semantics have been improved (along with a pile of other things) by Facebook in what is about to become memcached 1.2.0. If we see fragmentation errors, a switch to 1.2 is in order.