Linux进程性能管理.doc

Linux??3ì/D??ü1üàí ′òó??ùóDμ?·t??áD±í×′ì? 2???′e°?: chkconfig --list ??atd·t???úinit3,init5μ???DD??±e??éè?a?a 2???′e°?: chkconfig --level 35 atd on ???ˉatd·t??,2￠ó?atéè?¨?ú5·??ó??oó,??passwd???tê?3?μ?/tmp/hacker???t 2???′e°?: service atd restart at now +5 minutes more /etc/passwd/tmp/hacker ó?at?ú2007?ê8??26è??′DD?üá?,??shadow???tê?3?μ?/tmp/kkk???t 2???′e°?: at 10:00 2007-08-26 more /etc/shadow/tmp/kkk 2é?ˉ?μí3ê?·?óDatàyDDè???,2éμ?oóé?3y??è??? 2???′e°?: atq atrm 3 atq ??ê??ùó?μ?killD?o?,2￠ó?man2é?ˉsignalμ??ê??D??￠ 2???′e°?: kill -l man 7 signal ′òó?μ±?°??3ì￡?°üà¨CPU￡??ú′?μèD??￠ 2???′e°?: ps aux ′òó?μ±?°??3ì￡?ò?à??1??ê???ê?ê?3? 2???′e°?: ps -ef ′òó?μ±?°??3ì￡?ò?ê÷×′??ê???ê?ê?3? 2???′e°?: ps axjf ′òó?μ±?°??3ì￡?2￠??ê??ùóD?üá?2?êyD??￠ 2???′e°?: ps auxeww ó?top?üá???ê?μ±?°?μí3??3ì×′ì?,????2???üD?ò?′? 2???′e°?: top -d 2 ó?top?üá?????ê?á?′?μ??á1?ê?3?μ?top.txt???tà? 2???′e°?: top -b -n 2 top.txt ó?top?üá??à??sshd??3ì,2￠ó?top?üá???????3ìμ?ó??è???ü???a10 2???′e°?: top -d 2 -p `pgrep sshd|sed -n 1p` r ê?è???3ìo? 10 ó?killall?üá?,????syslogd??3ì,????é±?àhttpd??3ì 2???′e°?: ps -ef|grep syslogd killall -1 syslogd ps -ef|grep syslogd killall -9 httpd ??ê?μ±?°í????Dtcp/udpD-òéμ?á??óIPoí???úo??°??ó3μ?PID 2???′e°?: netstat -tulnp ó?sar??ê?μ±?°CPUμ?à?ó??ê￡?12??ê?èy′?￡?ò????üD?ò?′? 2???′e°?: sar -u 1 3 ó?sar??ê?μ±?°?ú′?μ?à?ó??ê,12??ê?èy′?￡?ò????üD?ò?′? 2???′e°?: sar -r 1 3 ó?sar??ê???àí′??ìμ?à?ó??ê,12??ê?èy′?,ò????üD?ò?′? 2???′e°?: sar -d 1 3 ó?sar??ê??μí3??3ì×ê?′μ?à?ó??ê,12??ê?1íò′?,ò????üD?ò?′? 2???′e°?: sar -v 1 1000 ?úprocà?2é?′sshd??3ìμ??ê??D??￠￡?±èè?maps,statusμè 2???′e°?: cd /proc/ ps aux|grep sshd cd 1700 more maps ??è?/root????,ó?fuser2é3?/root/μ???3ì,2￠é±μ?/root??3ì 2???′e°?: cd fuser -v /root fuser -k /root ó?lsof2é3??μí3?Dó?μ?/lib/tls/libc-2.3.2.so???tμ???3ì 2???′e°?: lsof /lib/tls/libc-2.3.2.so ó?lsofáD3?1?