WebDAV Speed Issues.
hi, What regulates Zope's WebDAV speed? The server, CPU/RAM, or bandwith? I would also be curious if WebDAV is generaly bandwith intensive. I have a Webfolder maped w/ NT 4.0 and find it a bit slow for 1 user. The server is pretty slow, and outgoing I only get 512K DSL speed. If it's generaly slow that fine, but if I can drop in more ram and a faster CPU can I get more speed? Thanks, j. ...................... ..... Jason C. Leach ... University College of the Cariboo. ..
----- Original Message ----- From: "Jason C. Leach" <jleach@mail.ocis.net> To: <zope@zope.org> Sent: Monday, June 11, 2001 5:33 PM Subject: [Zope] WebDAV Speed Issues.
hi,
What regulates Zope's WebDAV speed? The server, CPU/RAM, or bandwith? I would also be curious if WebDAV is generaly bandwith intensive.
Everything can limit the speed of Zope - not only WebDAV.
I have a Webfolder maped w/ NT 4.0 and find it a bit slow for 1 user. The server is pretty slow, and outgoing I only get 512K DSL speed.
When you say the server is pretty slow you can't expect that WebDAV will be very fast :-) In general WebDAV is in many situations faster than Zope's FTP. Andreas
--On 11 June 2001 14:33 -0700 "Jason C. Leach" <jleach@mail.ocis.net> wrote:
hi,
What regulates Zope's WebDAV speed? The server, CPU/RAM, or bandwith? I would also be curious if WebDAV is generaly bandwith intensive.
I have a Webfolder maped w/ NT 4.0 and find it a bit slow for 1 user. The server is pretty slow, and outgoing I only get 512K DSL speed.
My own experience is that NT 4.0 < Win98 = Win2K against the same server on the same LAN. The NT 4.0 implementation seems prone to "freezing" and the file transfer box often needs to be brought the foreground on the desktop if it gets stuck mid-transfer. YMMV Paul -- The Library, Tyndall Avenue, Univ. of Bristol, Bristol, BS8 1TJ, UK E-mail: paul.browning@bristol.ac.uk URL: http://www.bris.ac.uk/
--On 11 June 2001 14:33 -0700 "Jason C. Leach" <jleach@mail.ocis.net> wrote:
hi,
What regulates Zope's WebDAV speed? The server, CPU/RAM, or bandwith? I would also be curious if WebDAV is generaly bandwith intensive.
FYI, WebDAV is an HTTP protocol, and its speed is dictated by exactly the same things as HTTP, viz. 'all the above'. Any improvements to the speed you serve up pages will have a directly proportionate effect on the speed of WebDAV, and vice versa. seb
What regulates Zope's WebDAV speed? The server, CPU/RAM, or bandwith? I would also be curious if WebDAV is generaly bandwith intensive.
FYI, WebDAV is an HTTP protocol, and its speed is dictated by exactly the same things as HTTP, viz. 'all the above'. Any improvements to the speed you serve up pages will have a directly proportionate effect on the speed of WebDAV, and vice versa.
The DAV protocol is xml-based, so there is some overhead there (as a bonus, the current DAV implementation uses the relatively slow xmllib, since the faster parsers did not have the required namespace support at the time that code was written). Certainly there are some opportunities for speed improvement there. I've also noticed that MS Web Folders often seems to "freeze up" for a second or two at a time when uploading / downloading unless you move your mouse around in the dialog. I've always thought that this looked like some sort of message pump problem with the WebFolders implementation, but it would be worthwhile for someone to watch the dialogue between the client and server to see if maybe there is something deeper there (maybe its trying to do some sort of fancier HTTP 1.1 things that we don't support well?). At a minimum it would be good to know if people ever see the freezing behavior with other DAV servers (like mod_dav). Brian Lloyd brian@digicool.com Software Engineer 540.371.6909 Digital Creations http://www.digicool.com
participants (5)
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Andreas Jung -
Brian Lloyd -
Jason C. Leach -
Paul Browning -
seb bacon