Add caveat to kinfo_getvmmap(3) explaining high CPU utilisation

[sevan]

Summary

Based on kib's reply on https://lists.freebsd.org/pipermail/freebsd-hackers/2016-July/049710.html
Bug 210904
Yuri Victorovich <[e-mail]>

[jilles]

This seems a useful hint.

lib/libutil/kinfo_getvmmap.3

65 ↗

(On Diff #31980)

Perhaps this sentence can be improved a bit, like ".Fn kinfo_getvmmap calls can cause significant CPU consumption because calculating the residency counts requires iterating over all memory pages of the process.

[bcr]

Found a simple thing to fix first.

lib/libutil/kinfo_getvmmap.3

65 ↗

(On Diff #31980)

Right and there needs to be a line break after the sentence stop. How did I miss that in my first pass?

[sevan]

Reword & add line break.

[sevan]

Done

[bcr]

Excellent, now it's ready to go.