ruby/ruby — pull request #179 by funny-falcon (2012-09-11 07:32:39+00:00)
Title: * st.c: set packed size same as second table size

It seems that tcmalloc and jemalloc suffers from difference from
ST_DEFAULT_PACKET_TABLE_SIZE and ST_DEFAULT_SECOND_TABLE_SIZE on 64bit
platform, cause 18*8 and 19*8 fall into the different allocation buckets.
It is not an issue on 32bit platform though.

Difference in web application could reach 8% (tested with backported patch on ruby 1.9.3 using Redmine)