close Warning: Can't synchronize with repository "(default)" (Unsupported version control system "svn": /usr/lib/python2.7/dist-packages/libsvn/_fs.so: failed to map segment from shared object: Cannot allocate memory). Look in the Trac log for more information.

Changes between Version 15 and Version 16 of jazz/Performance_Tuning


Ignore:
Timestamp:
May 24, 2010, 2:19:01 AM (16 years ago)
Author:
jazz
Comment:

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  • jazz/Performance_Tuning

    v15 v16  
    115115 * [wiki:jazz/10-03-31 2010-03-31] : 高 IOWait 有什麼好的解決之道呢??
    116116
     117 * [http://www.scriptbits.net/2009/07/how-to-identify-what-processes-are-generating-io-wait-load/ How to identify what processes are generating IO Wait load?]
     118{{{
     119Jun run "pidstat -d 5" and it will print the list of processes doing IO over the last 5 seconds.
     120}}}
     121
     122 * [http://ubuntuforums.org/showthread.php?t=1382161  Re: Major problems: High Iowait. Change filesystem from etx4 to xfs/ext3/jfs?]
     123{{{
     124vm.dirty_writeback_centisecs=100
     125vm.dirty_expire_centisecs=100"
     126}}}
     127
     128 * [http://ubuntuforums.org/showthread.php?t=200004 iowait problem] - 顯示了使用 vmstat , iostat , hdparm 的技巧
     129
    117130== Network Performance Tuning ==
    118131