Chinese translated version of Documentation/basic_profiling
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ç½®vmlinuzæ容æçæ¹æ³å¯è½å°±æ¯ä½¿ç¨âmake installâï¼ç¶åä¿®æ¹
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Readprofile
2.6ç³»åå æ ¸éè¦çæ¬ç¸å¯¹è¾æ°çreadprofileï¼æ¯å¦util-linux 2.12aä¸å å«çï¼å¯ä»¥ä»:
http://www.kernel.org/pub/linux/utils/util-linux/ ä¸è½½
大é¨ålinuxåè¡çå·²ç»å å«äº.
å¯ç¨readprofileéè¦å¨kernelå¯å¨å½ä»¤è¡å¢å âprofile=2â
clear readprofile -r
dump output readprofile -m /boot/System.map > captured_profile
Oprofile
ä»http://oprofile.sourceforge.net/è·åæºä»£ç ï¼è¯·åèChanges以è·åå¹é
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å¨kernelå¯å¨å½ä»¤è¡å¢å âidle=pollâ
é ç½®CONFIG_PROFILING=yåCONFIG_OPROFILE=yç¶åéå¯è¿å ¥æ°kernel
./configure –with-kernel-support
make install
æ³å¾å°å¥½çæµéç»æï¼è¯·ç¡®ä¿å¯ç¨äºæ¬å°APICç¹æ§ãå¦æopreportæ¾ç¤ºæ0Hz CPUï¼
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One time setup:
opcontrol –setup –vmlinux=/boot/vmlinux
clear opcontrol –reset
start opcontrol –start
stop opcontrol –stop
dump output opreport > output_file
å¦æåªçkernelç¸å ³çæ¥åç»æï¼è¯·è¿è¡å½ä»¤ opreport -l /boot/vmlinux > output_file
éè¿reseté项å¯ä»¥æ¸ çè¿æç»è®¡æ°æ®ï¼ç¸å½äºéå¯çææã