TCP failed connection attempts

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Hi all,
I recently noticed our OSD servers have a very large number of TCP failed connection attempts. This is typical (output from netstat -s):

    50329019 active connections openings
    15218590 passive connection openings
    44167087 failed connection attempts

I’m not a TCP expert at all — but this doesn’t look good. Do others have similar numbers? Does anyone know if some ipv4 sysctl tuning can clear this up?
Cheers, Dan


-- Dan van der Ster || Data & Storage Services || CERN IT Department --
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