tree 7f2dc067ae55b651189631f8ab5a2118fd11315c
parent eb624f3d31930435e6ac934df4ef0f88739345e6
author Jake Ehrlich <jakehehrlich@google.com> 1534385643 -0700
committer Jake Ehrlich <jakehehrlich@google.com> 1534390703 -0700

[symbolize] Check modtime on ids.txt

This change checks the mod time on the ids.txt file
prior to reading the file and thus prior to performing
verificiation of the ids.txt. Coupled with caching this
reduces the primary cost of the symbolize to be parsing (30-40%, 30% regex alone),
lock contention (15%). This represents something like a 1000x
speed up. Further optimization seems much harder. Increasing
go channel buffer sizes should give a 25%-50% improvement.

Change-Id: I0da1a05c7e31afc68d8ddc2eecd0acf42ae59961