llvm/unittests
Vedant Kumar 94471e314e [llvm-profdata] Speed up merging by using a thread pool
Add a "-j" option to llvm-profdata to control the number of threads
used. Auto-detect NumThreads when it isn't specified, and avoid spawning
threads when they wouldn't be beneficial.

I tested this patch using a raw profile produced by clang (147MB). Here is the
time taken to merge 4 copies together on my laptop:

  No thread pool: 112.87s user 5.92s system 97% cpu 2:01.08 total
  With 2 threads: 134.99s user 26.54s system 164% cpu 1:33.31 total

Differential Revision: https://reviews.llvm.org/D22438

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@275921 91177308-0d34-0410-b5e6-96231b3b80d8
2016-07-18 22:02:39 +00:00
..
2016-07-13 18:17:46 +00:00
2016-01-26 21:29:08 +00:00
2016-03-01 19:15:06 +00:00
2016-07-17 18:19:28 +00:00