key_buffer issue

[yaniv33]

I m running a mysql server version 5.1.41 on my ubuntu machine (1 G RAM , 1 CPU)
Lately I am having some issues this server. Some queries are not getting executed, and I cannot seem to find an error massage
I have looked in the admin under health and I saw an alarming view on the key_buffer graph
I tried to increase the key buffer argument from 64 to 128 on the my.cnf file, but I do not see any change

i m using both myism and innodb on my databases

Can you please tell me if there is an issue with the following graph and if so how should I deal with it ..
Pic :

http://tinypic.com/view.php?pic=xdge8&s=6

 

[barryna]

After changing the value in my.cnf, did you restart mysql and verify that the setting is changed?

How long do these queries take to run?


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