系統管理 中的主題 What is context switching? https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251010#M1388 1. timeslice 是可由 kernal parameter 設定嗎?<BR /><BR />2. 我們是否可得知系統實際每秒做了多少次 context switch (avg)? Wed, 24 Nov 2004 04:53:56 GMT watermelonyu 2004-11-24T04:53:56Z What is context switching? https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251008#M1386 什麼時候會有context switching? Wed, 24 Nov 2004 00:45:24 GMT https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251008#M1386 watermelonyu 2004-11-24T00:45:24Z What is context switching? https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251009#M1387 Hi :<BR /><BR /><BR /><BR /> Context switch 的時機有二:<BR /><BR /> 1. force context switch<BR /><BR /> Process run out of time slot, timeslice/Hz ( 100 ms by default) and higher priority process is waiting for CPU.<BR /><BR /> 2. voluntary context switch<BR /><BR /> Process went to sleep, such as wait for I/O.<BR /><BR /><BR /><BR />.<BR /><BR />. Wed, 24 Nov 2004 01:39:06 GMT https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251009#M1387 watermelonyu 2004-11-24T01:39:06Z What is context switching? https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251010#M1388 1. timeslice 是可由 kernal parameter 設定嗎?<BR /><BR />2. 我們是否可得知系統實際每秒做了多少次 context switch (avg)? Wed, 24 Nov 2004 04:53:56 GMT https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251010#M1388 watermelonyu 2004-11-24T04:53:56Z What is context switching? https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251011#M1389 1. Kernal parameter : timeslice<BR /><BR />2. glance or gpm(xmode) --&gt; C for cpu report and then you can see the "ContextSwitch" by "Current Average High Time Cum Time"<BR /><BR /><BR /><BR /> Thu, 06 Jan 2005 08:46:32 GMT https://community.hpe.com/t5/%E7%B3%BB%E7%B5%B1%E7%AE%A1%E7%90%86/what-is-context-switching/m-p/2251011#M1389 watermelonyu 2005-01-06T08:46:32Z