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| author | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2019-12-02 21:03:09 +0000 |
|---|---|---|
| committer | Edward Tomasz Napierala <trasz@FreeBSD.org> | 2019-12-02 21:03:09 +0000 |
| commit | 359d7273f5b665b5b6e76a1b40864a5a95c7e095 (patch) | |
| tree | 9b2f59a2e6e2ea377fbd5835e7216cfced192383 | |
| parent | adc56f5a383771f594829b7db9c263b6f0dcf1bd (diff) | |
| download | src-359d7273f5b665b5b6e76a1b40864a5a95c7e095.tar.gz src-359d7273f5b665b5b6e76a1b40864a5a95c7e095.zip | |
Expand stats(3) man page to add a caveat regarding HZ.
Suggested by: thj
Sponsored by: Klara Inc, Netflix
Notes
Notes:
svn path=/head/; revision=355307
| -rw-r--r-- | share/man/man3/stats.3 | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/share/man/man3/stats.3 b/share/man/man3/stats.3 index d1f0c3a1d240..2a63febef1d6 100644 --- a/share/man/man3/stats.3 +++ b/share/man/man3/stats.3 @@ -25,7 +25,7 @@ .\" .\" $FreeBSD$ .\" -.Dd October 7, 2019 +.Dd December 2, 2019 .Dt STATS 3 .Os .Sh NAME @@ -960,3 +960,9 @@ The framework and this manual page were written by .An Lawrence Stewart Aq lstewart@FreeBSD.org and sponsored by Netflix, Inc. +.Sh CAVEATS +Granularity of timing-dependent network statistics, in particular TCP_RTT, +depends on the +.Dv HZ +timer. +To minimize the measurement error avoid using HZ lower than 1000. |