https://bugs.kde.org/show_bug.cgi?id=381553
--- Comment #29 from Ivo Raisr <[email protected]> --- I tried to do performance comparison of reg_alloc v3 implementation as it progresses in terms of patches. However the performance tests are not reliable - I could not get consistent results out of them on my amd64/Linux Ubuntu. Variations of up to +- 2% were observed on the same code in different runs. No other CPU intensive process was running in parallel. Patches description: 005: the initial register allocator v3 implementation which was able to run the complete regression test suite 005-J: 005 + Julian's enhancement to prefer callee saved registers 006: 005 + ranking of real registers based on their live ranges 007: 006 + groups of real registers in RRegUniverse [vanilla]: baseline Valgrind Therefore the only conclusions I can draw from these are: - patches 005 () produce worse behaviour than existing v3; - patches 005-J, 006 and 007 perform roughly equivalent or slightly better than existing register allocator v2 - it cannot be deduced on this level if there any performance improvements among 005-J, 006, and 007 (there should be!) Here are the results. Only speedups are printed with a new command line option "--terse". $ perl ./perf/vg_perf --tools=none,memcheck,callgrind,helgrind,cachegrind,drd,massif \ --terse --reps=10 --vg=./vanilla --vg=./ra3-005 --vg=./ra3-005-J --vg=./ra3-006 \ --vg=./ra3-007 vanilla/perf -- Running tests in vanilla/perf -------------------------------------- -- bigcode1 -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: 0.0% me: -4.7% ca: 0.2% he: -1.1% ca: -1.5% dr: -0.6% ma: 0.0% ra3-005-J : no: 0.0% me: 0.4% ca: 0.3% he: -0.5% ca: -0.9% dr: 0.0% ma: 0.6% ra3-006 : no: 0.0% me: 0.4% ca: 0.2% he: -0.0% ca: -1.2% dr: 0.0% ma: 0.0% ra3-007 : no: 0.0% me: 0.7% ca: 0.5% he: -0.5% ca: -0.6% dr: 0.0% ma: 1.2% -- bigcode2 -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: -0.7% me: -2.1% ca: -0.0% he: -0.5% ca: -1.3% dr: -1.1% ma: 0.9% ra3-005-J : no: -0.3% me: 1.0% ca: 0.1% he: -1.6% ca: -0.2% dr: -0.3% ma: -0.3% ra3-006 : no: -0.7% me: 0.8% ca: -0.2% he: -0.5% ca: -0.2% dr: -0.5% ma: 0.3% ra3-007 : no: -0.3% me: 0.2% ca: 0.1% he: -0.5% ca: 0.0% dr: 0.0% ma: 0.9% -- bz2 -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: 0.5% me:-13.2% ca: 0.0% he: -6.0% ca: -4.3% dr: -5.4% ma: 1.1% ra3-005-J : no: 1.1% me: -0.2% ca: 0.4% he: 0.2% ca: -2.0% dr: -0.2% ma: 2.1% ra3-006 : no: 0.5% me: 0.0% ca: 0.2% he: 0.5% ca: -0.8% dr: 0.5% ma: 1.6% ra3-007 : no: 0.5% me: 0.0% ca: 0.2% he: 0.3% ca: -1.0% dr: 0.6% ma: 1.1% -- fbench -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: 0.0% me: -4.0% ca: -0.4% he: -1.9% ca: -1.6% dr: -3.5% ma: 0.9% ra3-005-J : no: 0.9% me: 0.0% ca: -1.2% he: 1.1% ca: -0.3% dr: -0.8% ma: 0.9% ra3-006 : no: 0.0% me: 0.3% ca: -0.2% he: 1.1% ca: 0.3% dr: 0.0% ma: 1.8% ra3-007 : no: 0.0% me: -0.3% ca: -1.0% he: 1.1% ca: -0.3% dr: -1.9% ma: 0.9% -- ffbench -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: -0.9% me: -2.1% ca: 0.5% he: -3.2% ca: -5.0% dr: -2.2% ma: 0.0% ra3-005-J : no: 0.0% me: -0.6% ca: 0.5% he: 0.2% ca: 0.3% dr: -0.9% ma: 1.9% ra3-006 : no: -0.9% me: 0.0% ca: 0.0% he: -0.4% ca: 0.8% dr: 0.0% ma: 0.0% ra3-007 : no: -0.9% me: 0.3% ca: 0.0% he: 0.4% ca: 0.3% dr: -0.6% ma: 0.0% -- heap -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: 0.0% me: -2.2% ca: 0.9% he: -1.9% ca: -2.2% dr: -2.4% ma: -0.8% ra3-005-J : no: -2.6% me: -0.2% ca: 1.4% he: -0.6% ca: 0.0% dr: -0.5% ma: -1.2% ra3-006 : no: -2.6% me: -0.6% ca: 0.9% he: -0.6% ca: 0.0% dr: 0.0% ma: 0.4% ra3-007 : no: -1.3% me: -0.6% ca: 0.2% he: 1.0% ca: 0.0% dr: -2.9% ma: 2.9% -- heap_pdb4 -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: 1.2% me: -2.4% ca: 0.6% he: -1.5% ca: -3.0% dr: -3.5% ma: -0.4% ra3-005-J : no: 1.2% me: -0.7% ca: 0.0% he: -2.1% ca: 0.0% dr: -0.2% ma: -0.8% ra3-006 : no: 1.2% me: -0.5% ca: 0.0% he: -2.5% ca: -0.5% dr: -0.2% ma: 0.0% ra3-007 : no: 1.2% me: -0.4% ca: 0.3% he: -0.4% ca: 0.0% dr: -3.3% ma: 3.1% -- many-loss-records -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: -3.6% me: -1.6% ca: -1.0% he: -0.9% ca: -1.4% dr: -1.9% ma: 0.0% ra3-005-J : no: -7.1% me: -0.8% ca: -1.0% he: 1.8% ca: 0.0% dr: -1.0% ma: 1.5% ra3-006 : no: -3.6% me: 0.8% ca: -1.0% he: 0.0% ca: 0.0% dr: -1.0% ma: 0.0% ra3-007 : no: -7.1% me: 0.8% ca: -1.0% he: -0.9% ca: 0.0% dr: -1.0% ma: -1.5% -- many-xpts -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: 0.0% me: -4.7% ca: 0.4% he: -3.6% ca: -4.2% dr: -0.7% ma: 0.0% ra3-005-J : no: 0.0% me: 0.0% ca: 0.0% he: -0.5% ca: 0.0% dr: 1.5% ma: 0.7% ra3-006 : no: 0.0% me: 0.7% ca: 0.4% he: 0.5% ca: 1.0% dr: 2.2% ma: 0.0% ra3-007 : no: -2.6% me: 0.0% ca: 0.0% he: -0.5% ca: 2.1% dr: 2.9% ma: 0.7% -- memrw -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: 0.0% me: -7.6% ca: 0.8% he: -1.2% ca: -1.6% dr: -5.0% ma: -1.9% ra3-005-J : no: 0.0% me: 1.7% ca: 0.8% he: 0.5% ca: 0.0% dr: -1.7% ma: -3.8% ra3-006 : no: 0.0% me: 3.4% ca: 1.3% he: 0.0% ca: 1.0% dr: 0.0% ma: -1.9% ra3-007 : no: 0.0% me: 0.8% ca: 0.8% he: 0.2% ca: 0.5% dr: -2.5% ma: 0.0% -- sarp -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: 0.0% me: -2.8% ca: -0.6% he: -0.9% ca: 0.0% dr: -6.4% ma: 0.0% ra3-005-J : no: -3.0% me: -0.5% ca: -1.1% he: 0.4% ca: -1.1% dr: 0.0% ma: 0.0% ra3-006 : no: 3.0% me: -0.5% ca: 0.0% he: 0.6% ca: 2.2% dr: 1.1% ma: -2.9% ra3-007 : no: 0.0% me: 6.4% ca: 2.3% he: 1.3% ca: 1.1% dr: 0.0% ma: -2.9% -- tinycc -- vanilla : no: ----- me: ----- ca: ----- he: ----- ca: ----- dr: ----- ma: ----- ra3-005 : no: -0.9% me: -4.1% ca: 0.3% he: -5.3% ca: -2.1% dr: -5.6% ma: 0.0% ra3-005-J : no: 0.9% me: 0.7% ca: 0.5% he: -0.3% ca: -0.8% dr: -0.2% ma: 0.7% ra3-006 : no: 0.9% me: 0.8% ca: 0.6% he: -0.4% ca: -1.0% dr: -0.5% ma: 0.0% ra3-007 : no: -0.9% me: 0.6% ca: 0.5% he: -0.2% ca: -0.3% dr: 0.2% ma: 0.7% -- Finished tests in vanilla/perf -------------------------------------- == 12 programs, 420 timings ================= -- You are receiving this mail because: You are watching all bug changes.
