Created
July 21, 2011 14:00
-
-
Save jonforums/1097249 to your computer and use it in GitHub Desktop.
Investigating MRI 1.9.x file reading performance regressions
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| ## microbenchmark for binary reading of file with CRLF endings | |
| C:\projects\measurements-git>pik run rci bench core_brd_filelines_crlf | |
| jruby 1.6.3 (ruby-1.8.7-p330) (2011-07-07 965162f) (Java HotSpot(TM) Client VM 1.6.0_26) [Windows 7-x86-java] | |
| Rehearsal ----------------------------------------------------------- | |
| core_brd_filelines_crlf 2.139000 0.000000 2.139000 ( 2.109000) | |
| -------------------------------------------------- total: 2.139000sec | |
| user system total real | |
| core_brd_filelines_crlf 2.057000 0.000000 2.057000 ( 2.057000) | |
| ruby 1.8.7 (2011-06-30 patchlevel 352) [i386-mingw32] | |
| Rehearsal ----------------------------------------------------------- | |
| core_brd_filelines_crlf 1.560000 0.265000 1.825000 ( 1.982113) | |
| -------------------------------------------------- total: 1.825000sec | |
| user system total real | |
| core_brd_filelines_crlf 1.497000 0.265000 1.762000 ( 1.959112) | |
| ruby 1.9.2p290 (2011-07-09 revision 32478) [i386-mingw32] | |
| Rehearsal ----------------------------------------------------------- | |
| core_brd_filelines_crlf 0.998000 0.125000 1.123000 ( 1.176067) | |
| -------------------------------------------------- total: 1.123000sec | |
| user system total real | |
| core_brd_filelines_crlf 0.998000 0.187000 1.185000 ( 1.192068) | |
| ruby 1.9.4dev (2011-07-21 trunk 32590) [i386-mingw32] | |
| Rehearsal ----------------------------------------------------------- | |
| core_brd_filelines_crlf 0.967000 0.187000 1.154000 ( 1.214069) | |
| -------------------------------------------------- total: 1.154000sec | |
| user system total real | |
| core_brd_filelines_crlf 0.998000 0.140000 1.138000 ( 1.165066) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| ## microbenchmark for binary reading of file with LF endings | |
| C:\projects\measurements-git>pik run rci bench core_brd_filelines_lf | |
| jruby 1.6.3 (ruby-1.8.7-p330) (2011-07-07 965162f) (Java HotSpot(TM) Client VM 1.6.0_26) [Windows 7-x86-java] | |
| Rehearsal --------------------------------------------------------- | |
| core_brd_filelines_lf 2.126000 0.000000 2.126000 ( 2.100000) | |
| ------------------------------------------------ total: 2.126000sec | |
| user system total real | |
| core_brd_filelines_lf 2.025000 0.000000 2.025000 ( 2.025000) | |
| ruby 1.8.7 (2011-06-30 patchlevel 352) [i386-mingw32] | |
| Rehearsal --------------------------------------------------------- | |
| core_brd_filelines_lf 1.544000 0.328000 1.872000 ( 1.972113) | |
| ------------------------------------------------ total: 1.872000sec | |
| user system total real | |
| core_brd_filelines_lf 1.669000 0.156000 1.825000 ( 1.890108) | |
| ruby 1.9.2p290 (2011-07-09 revision 32478) [i386-mingw32] | |
| Rehearsal --------------------------------------------------------- | |
| core_brd_filelines_lf 0.967000 0.140000 1.107000 ( 1.155066) | |
| ------------------------------------------------ total: 1.107000sec | |
| user system total real | |
| core_brd_filelines_lf 0.952000 0.187000 1.139000 ( 1.162066) | |
| ruby 1.9.4dev (2011-07-21 trunk 32590) [i386-mingw32] | |
| Rehearsal --------------------------------------------------------- | |
| core_brd_filelines_lf 0.952000 0.203000 1.155000 ( 1.195069) | |
| ------------------------------------------------ total: 1.155000sec | |
| user system total real | |
| core_brd_filelines_lf 0.983000 0.187000 1.170000 ( 1.200068) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| ## microbenchmark for normal reading of file with CRLF endings | |
| C:\projects\measurements-git>pik run rci bench core_rd_filelines_crlf | |
| jruby 1.6.3 (ruby-1.8.7-p330) (2011-07-07 965162f) (Java HotSpot(TM) Client VM 1.6.0_26) [Windows 7-x86-java] | |
| Rehearsal ---------------------------------------------------------- | |
| core_rd_filelines_crlf 3.853000 0.000000 3.853000 ( 3.826000) | |
| ------------------------------------------------- total: 3.853000sec | |
| user system total real | |
| core_rd_filelines_crlf 3.629000 0.000000 3.629000 ( 3.628000) | |
| ruby 1.8.7 (2011-06-30 patchlevel 352) [i386-mingw32] | |
| Rehearsal ---------------------------------------------------------- | |
| core_rd_filelines_crlf 1.856000 0.156000 2.012000 ( 2.146123) | |
| ------------------------------------------------- total: 2.012000sec | |
| user system total real | |
| core_rd_filelines_crlf 1.779000 0.281000 2.060000 ( 2.560147) | |
| ruby 1.9.2p290 (2011-07-09 revision 32478) [i386-mingw32] | |
| Rehearsal ---------------------------------------------------------- | |
| core_rd_filelines_crlf 19.781000 0.187000 19.968000 ( 20.216156) | |
| ------------------------------------------------ total: 19.968000sec | |
| user system total real | |
| core_rd_filelines_crlf 19.672000 0.156000 19.828000 ( 20.153152) | |
| ruby 1.9.4dev (2011-07-21 trunk 32590) [i386-mingw32] | |
| Rehearsal ---------------------------------------------------------- | |
| core_rd_filelines_crlf 18.236000 0.094000 18.330000 ( 18.392052) | |
| ------------------------------------------------ total: 18.330000sec | |
| user system total real | |
| core_rd_filelines_crlf 17.675000 0.078000 17.753000 ( 17.846020) |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| ## microbenchmark for normal reading of file with LF endings | |
| C:\projects\measurements-git>pik run rci bench core_rd_filelines_lf | |
| jruby 1.6.3 (ruby-1.8.7-p330) (2011-07-07 965162f) (Java HotSpot(TM) Client VM 1.6.0_26) [Windows 7-x86-java] | |
| Rehearsal -------------------------------------------------------- | |
| core_rd_filelines_lf 3.174000 0.000000 3.174000 ( 3.145000) | |
| ----------------------------------------------- total: 3.174000sec | |
| user system total real | |
| core_rd_filelines_lf 3.102000 0.000000 3.102000 ( 3.103000) | |
| ruby 1.8.7 (2011-06-30 patchlevel 352) [i386-mingw32] | |
| Rehearsal -------------------------------------------------------- | |
| core_rd_filelines_lf 1.560000 0.234000 1.794000 ( 1.795103) | |
| ----------------------------------------------- total: 1.794000sec | |
| user system total real | |
| core_rd_filelines_lf 1.607000 0.172000 1.779000 ( 1.776102) | |
| ruby 1.9.2p290 (2011-07-09 revision 32478) [i386-mingw32] | |
| Rehearsal -------------------------------------------------------- | |
| core_rd_filelines_lf 17.628000 0.063000 17.691000 ( 17.672011) | |
| ---------------------------------------------- total: 17.691000sec | |
| user system total real | |
| core_rd_filelines_lf 17.363000 0.078000 17.441000 ( 17.438998) | |
| ruby 1.9.4dev (2011-07-21 trunk 32590) [i386-mingw32] | |
| Rehearsal -------------------------------------------------------- | |
| core_rd_filelines_lf 17.269000 0.109000 17.378000 ( 17.434997) | |
| ---------------------------------------------- total: 17.378000sec | |
| user system total real | |
| core_rd_filelines_lf 17.597000 0.078000 17.675000 ( 17.667010) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment