One of our database server is suddenly became very slow and i have no clue what to do .Please help. I m sharing the performance inforamtion regarding cpu,harddisk,ram .
Could you post the output of a
when it is currently having this issue?
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I dont have a much information on when this problem occurred but whenever i try to execute any command or take a putty session of the machine it takes too much time to execute it.
This systems is CPU bound:
I made the run-queue for kernel threads bold. According to that you can see that there is all CPU-time used up for user and system while at same time idle is zero.
The top ten of your CPU-using processes might not help since there could be loads of small processes, that use only a bit of CPU-time but all together a big amount.
You might want to check top for a longer listing when this ps aux is not running and also you might check with a ps piped into awk for example to count how many processes are using how much CPU, as a summary.
You can try something like
It is not very exact but it adds the CPU-time in % of the same commands up.
It could be that the box has so much trouble because there is something uneffectively written/configured in the software or if everything is allright, it might need more CPUs. Just a guess so far - you have to monitor and research more.
If it is only 1, then you have to do something for process performance, like increasing the processor, or restricting unwanted process in that machine and make it exclusive for your purposes.
Hi All,
can any one help me on this please.
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vmstat 2 10
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