src-test2/usr.bin/vmstat, branch release/8.4.0

MFC r233298:

2012-04-23T13:13:46Z

Garbage collect defunct nlist(3) symbols.

MFC r219708:

2012-02-07T03:15:12Z

Reemove uptime validity check that hasn't been necessary since r151417 switched to clock_gettime. vmstat will now not exit with an error if run on a system with 10 years of uptime.

MFC 198620:

2009-11-06T20:33:40Z

When fetching sum stats (vmstat -s) from a crash dump, fetch per-CPU counts and sum them to form the total counts.

Utilize calloc() instead of bzero'ing manually.

2009-02-21T03:43:20Z

Fix comment typo that managed to sneak in when I copy pasted some

2008-11-04T18:20:54Z

comments & code from iostat.

Repeat vmstat header after window.rows instead of a hardcoded 20.

2008-11-04T18:02:35Z

Use ioctl() to get the window size in vmstat(8), and force a new header to be prepended to the output every time the current window size changes. Change the number of lines before each header to the current lines of the terminal when the terminal is resized, so that the full terminal length can be used for output lines. Inspired by: svn change 175562 (same feature for iostat) Reviewed by: ru (who fixed some of my bugs too) MFC after: 1 week

Use kvm_getcptime(3) to fetch the global CPU time stats from a crashdump

2008-08-19T21:33:09Z

since the 'cp_time' symbol doesn't exist in recent kernels. This fixes iostat and vmstat on crash dumps. MFC after: 1 week

Add forgotten -H, -h, and -P to usage().

2008-04-10T09:56:57Z

Fix some boolean logic errors. && vs & and other sillyness. blush

2008-01-18T22:09:44Z

This would prevent it from skipping non-present cpus in -P output. Submitted by: Pieter de Goeje

Add the -H, -h and -P flags to vmstat. -P causes per-cpu output of

2007-12-13T02:36:11Z

user/system/idle stats. -h feeds the memory column through humanize_number() to reduce the amount of column overflowing. -H turns this off. -h is turned on by default if stdout is a tty.