freebsd-dev/sbin/sysctl
Andrew Gallatin a18f34fe77 Don't request CTLTYPE_OPAQUE if we can't print them.
The intent is to skip expensive opaque sysctls like tcp_pcblist unless
they are explicitly requested. Sysctl nodes like this don't show up in
sysctl -a, but they do generate output that winds up being dropped,
unless the user specifically requested  binary/hex output or opaques.

This reduces the runtime of sysctl in many circumstances on a loaded
system.  It also reduces the likelihood that simply gathering
diagnostics on a sick machine (stuck lock, etc) via sysctl -a might
push it over the edge into a total lockup.

Reviewed by:	jtl
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D11461
2017-07-31 14:56:35 +00:00
..
Makefile Explicitly add more files to the 'runtime' package. 2016-02-09 20:19:31 +00:00
Makefile.depend Add META_MODE support. 2015-06-13 19:20:56 +00:00
sysctl.8 Renumber copyright clause 4 2017-02-28 23:42:47 +00:00
sysctl.c Don't request CTLTYPE_OPAQUE if we can't print them. 2017-07-31 14:56:35 +00:00