Slow test result on wait4 syscall in Red Hat Enterprise Linux
Issue
- RHEL 6.6
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
99.89 331.677056 5257 63095 21035 wait4
0.02 0.067277 0 3048327 rt_sigaction
0.01 0.048489 0 1698666 read
- RHEL 7.9
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
92.35 596.241344 9449 63099 21039 wait4
1.50 9.678854 3 3048331 rt_sigaction
0.01 0.048489 0 1698666 read
Environment
- Red Hat Enterprise Linux 7
- Intel Xeon Gold 5220 @2.20GHz
- Red Hat Enterprise Linux 6
- Intel Xeon E7-8890 v3@3.30GHz
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