| Summary: | performance degradation | ||
|---|---|---|---|
| Product: | Ghostscript | Reporter: | Henry Stiles <henry.stiles> |
| Component: | General | Assignee: | Chris Liddell (chrisl) <chris.liddell> |
| Status: | NOTIFIED FIXED | ||
| Severity: | normal | ||
| Priority: | P2 | ||
| Version: | master | ||
| Hardware: | PC | ||
| OS: | All | ||
| Customer: | 711 | Word Size: | --- |
A significant slowdown with this commit: git show commit 3b3261eca08cd73ca355b28fe5125c98d411820d Author: Chris Liddell <chris.liddell@artifex.com> Date: Wed Jun 22 20:05:15 2011 +0100 Bug 692297: reinstate the proper way to release FT glyphs. FT_Glyph_Done is the correct method for freeing both bitmap and outline glyphs from Freetype. No cluster differences expected. profiling indicates heavier memory usage after this commit, didn't look very closely at it though. Fixed in: http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=89de03 For old code, on my machine: time ./gs -sDEVICE=bmpmono -o /dev/null -c '100 {(/home/cliddell/Downloads/gs_timing.ps) run} repeat' > /dev/null gives: real 1m1.167s user 1m0.240s sys 0m0.880s And for the new code: real 0m48.838s user 0m48.170s sys 0m0.630s |
Created attachment 7662 [details] performance problem file The customer reports the attached file is much slower in 9.02 vs 8.71. I confirm. HEAD: time ./gs -sDEVICE=bmpmono -o /dev/null -c '100 {(/Users/henrys/gs_timing.ps) run} repeat' > /dev/null real 0m49.024s user 0m47.347s sys 0m1.667s 8.71: time ./gs -sDEVICE=bmpmono -o /dev/null -c '100 {(/Users/henrys/gs_timing.ps) run} repeat' > /dev/null real 0m32.915s user 0m30.948s sys 0m1.666s profiles forthcoming