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Re: [Question #268156]: Graphite Server High IO Wait Time

 

Question #268156 on Graphite changed:
https://answers.launchpad.net/graphite/+question/268156

Description changed to:
Hello!

Our Graphite server is facing CPU and disk bottlenecks. The main problem
is that the %IO Wait time is always in the range of 40%. We run it on a
2-core CPU on a RHEL server with 7.5 GiB RAM. (Agreed, our CPU
configuration is primitive, but we'd like to understand why the
following happens before upgrading it.)

Our Graphite server is processing over 160,000 data points per minute.
But the Disk IO stats show that 40% time is spent in IO wait. Our disk
CISS can write 160 MiB per second but Graphite is only able to utilise
2MiB per second.

Has anyone experienced this issue? What were your findings? Do you have
any suggestions for the above questions?

Thank you very much!

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