Re: [Evolution] IMAP speed

[Scott Otterson <scotto u washington edu>]

Yup, that's right.  1.0.8 v.s. 1.2.0.  So that we can compare results,
how did you do your tests and what were your numbers?

Scott

On Tue, 2002-11-19 at 13:28, Jeffrey Stedfast wrote:
> I don't have time for this right now as I'm working on the GNOME2 port.
> In the meantime, you can profile Evolution 1.0.x and 1.2.0 with regards
> to loading an imap folder. Afterall, that is what you said was slower,
> correct?
>
> however, I suspect the problem is not evolution at all. probably your
> server is just slower to respond or something.
>
> Jeff
>
> On Tue, 2002-11-19 at 15:43, Scott Otterson wrote:
> > OK, sure.  I'll be glad to repeat any PPP IMAP speed tests you've done. 
> > What were they? 
> >
> > On Tue, 2002-11-19 at 10:31, Jeffrey Stedfast wrote:
> > > On Tue, 2002-11-19 at 13:25, Scott Otterson wrote:
> > > > Oh, and also, what about the IMAP connections being -- not faster -- but
> > > > slower?  
> > >
> > > I don't know, it's faster for me. Maybe stop wasting my time and doing a
> > > little profiling?
> > >
> > > Jeff
> > >
> > > > On Tue, 2002-11-19 at 10:22, Scott Otterson wrote:
> > > > > Um, Jeff, you missed the point:  the mozilla IMAP connection does not
> > > > > hang when PPP is lost.
> > > > >
> > > > > On Tue, 2002-11-19 at 10:12, Jeffrey Stedfast wrote:
> > > > > > On Tue, 2002-11-19 at 13:01, Scott Otterson wrote:
> > > > > > > Well, first, although the IMAP on 1.2 is supposed to be faster than
> > > > > > > 1.08, several of us have said that IMAP is actually slower.  Seems like
> > > > > > > this information would interest Ximian but on this list, anyway, it
> > > > > > > doesn't seem to be making much of an impression.
> > > > > > >
> > > > > > > Second, if a persistent tcp connection causes evolution to hang, then
> > > > > > > maybe evolution shouldn't be using one.
> > > > > >
> > > > > > this is why there's POP :-)
> > > > > >
> > > > > > IMAP, by definition, uses a persistent tcp connection.
> > > > > >
> > > > > > > On reading your response, my first thought was, "Boy, linux must be
> > > > > > > lame," because on Windows, nothing hangs when you lose your PPP -- not
> > > > > > > outlook, not mozilla, not anything as far as I know.
> > > > > >
> > > > > > wonderful about those win32 apis for finding out when the connection
> > > > > > goes down. Not available on linux.
> > > > > >
> > > > > > >   But then I fired
> > > > > > > up mozilla on linux and found that it too survives having the modem
> > > > > > > unplugged: Read IMAP mail, unplug the modem, plug it back in again,
> > > > > > > reconnect, and mozilla is fine; for the same sequence, evolution hangs.
> > > > > > >
> > > > > > > So what does mozilla use that works better than a persistent tcp
> > > > > > > connection and should evolution be using that instead?
> > > > > >
> > > > > > HTTP != persistent tcp stream. IMAP == persistent tcp stream.
> > > > > >
> > > > > > HTTP connects, does a fetch, and then closes the connection. (well, HTTP
> > > > > > 1.1 can have persistent streams to avoid
> > > > > > connect/disconnect/connect/disconnect but that's another issue).
> > > > > >
> > > > > > IMAP connects and stays connected until the user explicitly logs off.
> > > > > > This is why I also mentioned that ssh (which also uses a persistent tcp
> > > > > > connection) also hangs for like 10 minutes.
> > > > > >
> > > > > > If you don't like the wait, you are free to modify your kernel or submit
> > > > > > a patch to evolution.
> > > > > >
> > > > > > Jeff
> > > > > >
> > > > > > > Scott
> > > > > > >
> > > > > > > On Mon, 2002-11-18 at 12:45, Jeffrey Stedfast wrote:
> > > > > > > > On Mon, 2002-11-18 at 13:50, Scott Otterson wrote:
> > > > > > > > > Yeah, I'd have to agree.  IMAP is _much_ slower -- takes way longer to
> > > > > > > > > start up for the first time and if you disconnect, it's way slower to
> > > > > > > > > reconnect.
> > > > > > > > >
> > > > > > > > > The connection also hangs if my PPP dialup goes down -- I have to run
> > > > > > > > > killev before it can see email again.  This is the only network app I
> > > > > > > > > have that hangs when I loose PPP.
> > > > > > > >
> > > > > > > > I'm guessing you don't run any other apps that use a persistent tcp
> > > > > > > > connection then :-)
> > > > > > > >
> > > > > > > > fyi I am almost always connected to remote sites with ssh and irc, etc
> > > > > > > > and so when my internet connection drops, all those apps hang just as
> > > > > > > > long as Evolution does.
> > > > > > > >
> > > > > > > > Jeff
> > > > > > > >
> > > > > > > > PS: No, netscape/mozilla do not hold persistent tcp connections.
> > > -- 
> > > Jeffrey Stedfast
> > > Evolution Hacker - Ximian, Inc.
> > > fejj ximian com  - www.ximian.com
> >
> >
> >
> > _______________________________________________
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> -- 
> Jeffrey Stedfast
> Evolution Hacker - Ximian, Inc.
> fejj ximian com  - www.ximian.com