Handler_read_rnd is too high (more than 2GB)

Posted by pnm123 on Server Fault See other posts from Server Fault or by pnm123
Published on 2010-06-16T08:51:57Z Indexed on 2010/06/16 8:53 UTC
Read the original article Hit count: 272

Filed under:

mysql

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phpmyadmin

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slow

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query

Hello,

I am running an advertising program and there are some SELECT, UPDATE and DELETE queries when showing ads. Sometimes, displaying ads is fast but sometimes it is too slow. At this time, it is slow and Handler_read_rnd and Handler_read_rnd_next is as mentioned below.

Handler_read_rnd 2,844.68 M Handler_read_rnd_next 2,945.63 M

How can I speed-up displaying ads (decreasing Handler_read_rnd and Handler_read_rnd_next)

Thank you, pnm123

PS: Currently there are 7,068,528 rows on the advertising program's database.

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