2014年10月11日(土) 旧暦 [n年日記] [更新:"2014/10/11 22:58:13"]
#1 [pkgsrc] ccache helps if I/O is on disk, but doesn't on tmpfs (memory)
I've played with ccache.
| A | B | |
|---|---|---|
| hostname | t-106 | z87 |
| cpu | AMD Opteron | Core i7 |
| core | x 4 | x 4 |
| cpu type | 1352 | 4770 |
| clock | 2.1GHz | 3.40GHz |
| Phy.Mem | 8GB | 8GB |
| NetBSD | i386 | amd64 |
| Release | 7.99.1 | 6.1_STABLE |
| WRKOBJDIR | hard disk | tmpfs |
- B with no ccache
average total 383 sec 6'23 140'35 - B with ccache on hard disk
about twice elapse time Overhead of R/W on ccache costs too much. - B with ccache on tmpfs
about the same as (1) Probably other than file I/O is bottle neck. - A without ccache See below
- A with ccache on tmpfs. See below
ccache size for gnuradio is 200-300MB.
(4) A without ccache
package sec -> m s ( size) gunzip
gnuradio-3.7.5.tgz 588 9'48 ( 1431) 10240
gnuradio-fec-3.7.5.tgz 1629 27'09 ( 531528) 3348480
gnuradio-noaa-3.7.5.tgz 1904 31'44 ( 143435) 778240
gnuradio-doxygen-3.7.5.tgz 2041 34'01 ( 165460182) 367390720
gnuradio-channels-3.7.5.tgz 2048 34'08 ( 283080) 1689600
gnuradio-wxgui-3.7.5.tgz 2089 34'49 ( 426312) 2140160
gnuradio-pager-3.7.5.tgz 2207 36'47 ( 166597) 839680
gnuradio-uhd-3.7.5.tgz 2589 43'09 ( 692416) 3348480
gnuradio-qtgui-3.7.5.tgz 2677 44'37 ( 1035591) 5908480
gnuradio-utils-3.7.5.tgz 2824 47'04 ( 210593) 1443840
gnuradio-wavelet-3.7.5.tgz 2925 48'45 ( 135809) 634880
gnuradio-fcd-3.7.5.tgz 2961 49'21 ( 149196) 552960
gnuradio-video-sdl-3.7.5.tgz 2993 49'53 ( 117356) 512000
gnuradio-digital-3.7.5.tgz 3023 50'23 ( 1937120) 13527040
gnuradio-core-3.7.5.tgz 3106 51'46 ( 9178054) 60876800
gnuradio-dtv-3.7.5.tgz 3118 51'58 ( 278592) 1566720
gnuradio-atsc-3.7.5.tgz 3146 52'26 ( 426333) 2754560
gnuradio-companion-3.7.5.tgz 3306 55'06 ( 234340) 1536000
gnuradio-zeromq-3.7.5.tgz 3415 56'55 ( 195177) 1136640
gnuradio-vocoder-3.7.5.tgz 3495 58'15 ( 560207) 2928640
gnuradio-ctrlport-3.7.5.tgz 3898 64'58 ( 24891) 143360
gnuradio-trellis-3.7.5.tgz 4011 66'51 ( 1417666) 11386880
Total 59993 999'53 ( 183605906) 484454400 22 files
gnuradio-default-3.7.5.tgz 3458 57'38 ( 203129175) 529397760
------------------------------------
(5) A with ccache on tmpfs.
package sec -> m s ( size) gunzip
gnuradio-3.7.5.tgz 584 9'44 ( 1432) 10240
gnuradio-core-3.7.5.tgz 1377 22'57 ( 9178123) 60876800
gnuradio-dtv-3.7.5.tgz 1442 24'02 ( 278601) 1566720
gnuradio-channels-3.7.5.tgz 1453 24'13 ( 283090) 1689600
gnuradio-pager-3.7.5.tgz 1456 24'16 ( 166597) 839680
gnuradio-noaa-3.7.5.tgz 1464 24'24 ( 143436) 778240
gnuradio-wavelet-3.7.5.tgz 1475 24'35 ( 135819) 634880
gnuradio-zeromq-3.7.5.tgz 1501 25'01 ( 195183) 1136640
gnuradio-fec-3.7.5.tgz 1519 25'19 ( 531548) 3348480
gnuradio-atsc-3.7.5.tgz 1535 25'35 ( 426344) 2754560
gnuradio-utils-3.7.5.tgz 1537 25'37 ( 210638) 1443840
gnuradio-qtgui-3.7.5.tgz 1546 25'46 ( 1035550) 5908480
gnuradio-wxgui-3.7.5.tgz 1560 26'00 ( 426223) 2140160
gnuradio-video-sdl-3.7.5.tgz 1564 26'04 ( 117360) 512000
gnuradio-ctrlport-3.7.5.tgz 1591 26'31 ( 24898) 143360
gnuradio-uhd-3.7.5.tgz 1600 26'40 ( 692420) 3348480
gnuradio-vocoder-3.7.5.tgz 1616 26'56 ( 560223) 2928640
gnuradio-fcd-3.7.5.tgz 1619 26'59 ( 149201) 552960
gnuradio-digital-3.7.5.tgz 1699 28'19 ( 1937131) 13527040
gnuradio-doxygen-3.7.5.tgz 1831 30'31 ( 165464005) 367400960
gnuradio-trellis-3.7.5.tgz 1991 33'11 ( 1417653) 11386880
gnuradio-companion-3.7.5.tgz 2509 41'49 ( 234497) 1536000
Total 34469 574'29 ( 183609972) 484464640 22 files
gnuradio-default-3.7.5.tgz 3227 53'47 ( 203135025) 529397760
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