QUERY_PATH_INFO what? what? what? what? what? what?

Christopher R. Hertel crh at ubiqx.mn.org
Fri Feb 22 17:22:41 GMT 2008

Amin Azez wrote:
> After double clicking on the shortcut to open the file I get the most
> amazing display of seeming client forgetfulness:
> 7 times the windows XP client will do QUERY_PATH_INFO on the same parent
> folder. (Along with 7 sets of WAN latency).
> 4 times it will do QUERY_PATH_INFO on the file being opened.
> That's 8 seconds gone before it even opens the file
> I wonder why it keeps repeating the QUERY_PATH_INFO.
> Anyone know anything about this?

Yes.  You're doing quite well.  I've seen as many as 19 repeats of the same

You've already noticed that it is Explorer that is generating the repeat
queries.  Try 'dir' from a DOS shell and you'll notice how much cleaner it
is (well... to be fair it's not trying to read icons and such-like).

Chris -)-----

> Attached is a vfs_cifs backend trace of opening a remote file from
> clicking a desktop shortcut (which is a nice way to avoid all
> explorer.exe's inquisitive calls)
> The XP client is
> The single VFS CIFS proxy is
> The KDC and share server is
> the subnets are WAN VPN'd with a latency between the two subnets is 53ms
> It's and 19 seconds (at the close response) before the file displayed,
> but some of the intervening operations VFS PROXY will do up-front when a
> file is opened and cache the result, so thats no problem I hope.
> Sam

"Implementing CIFS - the Common Internet FileSystem" ISBN: 013047116X
Samba Team -- http://www.samba.org/     -)-----   Christopher R. Hertel
jCIFS Team -- http://jcifs.samba.org/   -)-----   ubiqx development, uninq.
ubiqx Team -- http://www.ubiqx.org/     -)-----   crh at ubiqx.mn.org
OnLineBook -- http://ubiqx.org/cifs/    -)-----   crh at ubiqx.org

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