load goes up with 3.0.7
jra at samba.org
Wed Oct 20 18:25:50 GMT 2004
On Tue, Oct 12, 2004 at 06:33:10PM +0200, Heinrich Mislik wrote:
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> after installing 3.0.7 the load was considerably higher then before.
> I think one reason is the use of realpath in reduce_name. realpath
> needs getwd for a relative path, which can be expensive, when it
> encounters large directories. Attached is a patch, that always passes
> absolut pathes to realpath. It does so by calling vfs_GetWd and
> prepending the result. vfs_GetWd does caching and is much faster then
> calling getwd every time.
> I did some testing and found that it works, but don't dare to put it
> into production. Can someone who has more insight comment on this?
The realpath code is only used if symlinks = no or wide links = no.
I'm kind of inclined to think a performance hit is acceptable to
ensure correctness in these cases (people who set these parameters
are more concerned about client leakage out of the share than speed, IMHO
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