usr.bin/netstat: don't call kresolve_list() if using live kernel
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Authored by nikita_elyzion.net on Aug 29 2017, 1:42 PM.

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bapt
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rS323666: MFC r323016:
rS323016: Don't call kresolv_list() if using netstat on live kernel

Summary

kresolve_list() is doing 372 kldsym() calls in my tests for a simple netstat.
Calling it only for non-live image improves the running time and CPU usage when collecting stats for the running kernel.

Note: I tested it only on stable/11

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rS FreeBSD src repository - subversion

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nikita_elyzion.net created this revision.Aug 29 2017, 1:42 PM

Herald added a subscriber: imp. · View Herald TranscriptAug 29 2017, 1:42 PM

cem accepted this revision.Aug 29 2017, 3:04 PM

This revision is now accepted and ready to land.Aug 29 2017, 3:04 PM

Closed by commit rS323016: Don't call kresolv_list() if using netstat on live kernel (authored by bapt). · Explain WhyAug 30 2017, 7:58 AM

This revision was automatically updated to reflect the committed changes.

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head/

usr.bin/

netstat/

main.c

5 lines

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head/usr.bin/netstat/main.c

usr.bin/netstat: don't call kresolve_list() if using live kernelClosedPublicActions