cvs commit: src/usr.sbin/syslogd syslogd.c

[Alexander Leidinger]

Robert Watson <rwatson at FreeBSD.org> wrote:

> The cost to check for free space is the cost of a fstatfs() system 
> call on the file descriptor of the log file.  This should be handled 
> without touching the disk, so while it's not a cheap system call 
> compared to, say, getpid(), as it acquires locks and enters VFS, it's 
> a lot cheaper than any disk I/O operation. Optional is good, if only 
> because sometimes people do actually want logging to fill the disk, 
> and that's been the behavior historically :-).

Do you know if a kqueue based solution is cheaper?

Bye,
Alexander.

-- 
http://www.Leidinger.net  Alexander @ Leidinger.net: PGP ID = B0063FE7
http://www.FreeBSD.org     netchild @ FreeBSD.org  : PGP ID = 72077137
For every complex problem, there is a solution that is simple, neat,
and wrong.
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