Some time in the recent past Paul Everlund scribbled:
> Hi list!
>
> What does this mean?
>
> # sysctl kern.msgbuf
> [snip]
> <5>/var: optimization changed from TIME to SPACE
> <118>Dec 10 11:36:12 fw /kernel: /var: optimization changed from TIME to
> SPACE [snip]

It means that your /var filesystem is nearly full.  The kernel is now
trying to maximize the amout of free full blocks on the filesystem.

>From fs(5) manpage:
===
The element fs_optim specifies whether the file system should try to min-
imize the time spent allocating blocks, or if it should attempt to mini-
mize the space fragmentation on the disk.  If the value of fs_minfree
(see above) is less than 10%, then the file system defaults to optimizing
for space to avoid running out of full sized blocks.  If the value of
minfree is greater than or equal to 10%, fragmentation is unlikely to be
problematical, and the file system defaults to optimizing for time.
===

Some other good reads would be tunefs(8), newfs(8), and the mailing list
archives.

>
> Thank you in advance!
>
> Best regards,
> Paul

--
Chris



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