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I am deploying a highly loaded system on a cluster of centos servers. For stable operation of the system, I need to increase the limit of the maximum number of open files and processes. I started searching the forums and saw that some people set the limit to 65355, but then I found that some people set the limit to 500000.

What are the maximum limits in centos? Or maybe there is some optimal value at which the system will work best?

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You can set using sysctl. sysctl -w fs.file-max=100000 and verify using sysctl fs.file-max

Niraj Nandane
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