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Diffstat (limited to 'libraries/qt5/README.benchmarks')
| -rw-r--r-- | libraries/qt5/README.benchmarks | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/libraries/qt5/README.benchmarks b/libraries/qt5/README.benchmarks new file mode 100644 index 0000000000..466d6b924d --- /dev/null +++ b/libraries/qt5/README.benchmarks @@ -0,0 +1,114 @@ +ENVIRONMENT + + Linux 4.4.157 SMP x86_64 (stock 14.2 -huge.) + Using /usr/bin/time rather than shell built-in. + Jobs: 2. + Qt version: 5.9.7 + +DMI Info: + + Board: Lenovo Mahobay motherboard. + CPU: Version: Intel(R) Pentium(R) CPU G640 @ 2.80GHz + Family: Core i7 Core Count: 2 + Core Enabled: 2 + Thread Count: 2 + Max Speed: 2800 MHz + Current Speed: 2800 MHz + External Clock: 100 MHz + + CPUFREQ: Performance mode. + + RAM: 12G (1333 MHz) DDR3. + + An 8 GB tmpfs in /mnt/memory is used as a ramdisk for /tmp + while the package was output on the real HDD. i.e. + $TMP=/mnt/memory/SBo + $OUTPUT=/tmp + +System ccache setup: + + cache size: 18.3 GB + max_cache: 20.0 GB + cache_dir: /root/.ccache + CCACHE_TEMPDIR=/mnt/memory/ccache + +No special settings were used for Qt's -ccache. +All builds with either ccache option were performed a few +times to build up enough cache. + +BENCHMARKS + +BUILDS WITH WEBENGINE + +Normal build: + +45970.94 user +2408.58 system +9:55:02 elapsed +135% CPU (0 avgtext + 0 avgdata 7378176 maxresident) k +80232 inputs + 522800 outputs (263 major + 950621123 minor) pagefaults +0 swaps + +Using Qt's -ccache option: + +36223.82 user +1872.14 system +6:58:03 elapsed +151% CPU (0 avgtext + 0 avgdata 7375136 maxresident) k +274848 inputs + 578712 outputs (730 major + 724828690 minor) pagefaults +0 swaps + +Using system ccache: + +4008.03 user +289.34 system +1:17:11 elapsed +92% CPU (0 avgtext + 0 avgdata 7377248 maxresident) k +4396232 inputs + 391856 outputs (97 major + 59094442 minor) pagefaults +0 swaps + + +BUILDS WITHOUT WEBENGINE + +Normal build: + +10408.66 user +687.60 system +3:18:22 elapsed +93% CPU (0 avgtext + 0 avgdata 3850048 maxresident) k +48176 inputs + 414056 outputs (26 major + 265106108 minor) pagefaults +0 swaps + +Using Qt's -ccache option: + +1055.75 user +167.14 system +22:17.13 elapsed +91% CPU (0 avgtext + 0 avgdata 1188432 maxresident) k +936 inputs + 468464 outputs (8 major + 42575851 minor) pagefaults +0 swaps + +Using system ccache: + +922.05 user +159.25 system +19:42.82 elapsed +91% CPU (0 avgtext + 0 avgdata 504048 maxresident) k +5672 inputs + 158016 outputs (5 major + 38449127 minor) pagefaults +0 swaps + + +Average Packages Sizes: + +Normal: 102 MB +Without webengine: 50 MB + + +As is seen by the elapsed time in the results, using ccache +system-wide has a huge benefit. Qt's -ccache option showed +little gain when building the full package, but was good +when building without webengine. + +See README.ccache for information on setting up ccache. + +Last updated Mon 10 Dec 03:46:29 UTC 2018 |