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Re: Mysql 5.5 High I/O Wait
Posted by: Tim Nelson
Date: May 20, 2014 05:56PM

This is ridiculous. Literally, there are at most 3 requests in the processlist and they are dispatched quite quickly. What the heck can mysqld be doing right now?

I have seen over 200k breads/s....

06:48:07 PM tps rtps wtps bread/s bwrtn/s
06:48:08 PM 6647.96 6125.51 522.45 97959.18 20791.84
06:48:09 PM 6641.41 6545.45 95.96 104630.30 1672.73
06:48:10 PM 12284.54 12277.32 7.22 196288.66 74.23
06:48:11 PM 11450.00 11264.29 185.71 180424.49 2595.92
06:48:12 PM 13558.06 13379.57 178.49 213815.05 2735.48 <--- REALLY WTF !!!!
06:48:13 PM 9258.16 9164.29 93.88 146677.55 1812.24

Remember same number of transactions generates 1000 breads normally. This is crazy.

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May 20, 2014 12:15PM
Re: Mysql 5.5 High I/O Wait
May 20, 2014 05:56PM


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