Document new kern.tty_info_kstacks tunable.
Reviewed by: manpages (imp), 0mp Differential Revision: https://reviews.freebsd.org/D25488
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2020-12-20 02:59:44 +00:00
svn path=/head/; revision=362700
@ -28,7 +28,7 @@
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.\" @(#)termios.4 8.4 (Berkeley) 4/19/94
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.\" $FreeBSD$
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.\"
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.Dd December 26, 2009
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.Dd June 27, 2020
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.Dt TERMIOS 4
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.Os
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.Sh NAME
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@ -761,6 +761,13 @@ command in the foreground, its process ID, the symbolic
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wait channel, the number of user and system seconds used,
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the percentage of cpu the process is getting, and the resident
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set size of the process.
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.Pp
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In case the
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.Xr sysctl 8
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variable
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.Va kern.tty_info_kstacks
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is set to a non-zero value, the running thread's stack is
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written to the terminal (e.g., for debugging purposes).
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.El
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.Pp
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The
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@ -1586,4 +1593,5 @@ the values in the header
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.Xr tcsendbreak 3 ,
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.Xr tcsetattr 3 ,
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.Xr tcsetsid 3 ,
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.Xr tty 4
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.Xr tty 4 ,
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.Xr stack 9
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