Re: [Evolution] IMAP speed

[Ronald Kuetemeier <ronald kuetemeier com>]

On Wed, 2002-11-20 at 10:32, Scott Otterson wrote:
> On Tue, 2002-11-19 at 17:23, Not Zed wrote: 
> > I've dont plenty of testing with disconnecting, and it works fine.  It
> > takes a while and eventually times out.  If i reconnect the network, it
> > just keeps going again.
>
> NoZed, we must be doing something different.  Here's the first thing I
> tried:  
>
> - connect modem (click modemlights applet)
> - start evolution
> - wait for the INBOX to show up
> - disconnect modem (click the modemlights applet)
> - in evolution, click the connect button (evolution lower left button)  
> - click cancel in the evolution popup window 
> - connect modem (click the modemlights applet)
>
> At this point, evolution hangs, meaning that at the bottom, it displays
> "Scanning folders in "IMAP..."  and messages do not show up in the
> preview window when I click on them.  I left it undisturbed for 10

strace -f evolution
Look for SIGPIPE, lots of libs evolution links to turn it off. Evolution
never sets a proper signal handler for it. So you have to wait for
~20min up to 2H depending on the last network segment.

Ronald

> minutes and it remained frozen in that state.  I don't know, maybe it's
> a thread contention but the bottom line is that I can't read email until
> evolution is killev'ed and restarted.  As far as I know, this is
> reasonably close to what happens when my modem connection goes down on
> its own.  There are a lot of other ways I can get to this state.
>
> Could you try this experiment?  Jeff Stedfast (fejj ximian com) says
> that UW IMAP is bad juju.  If you don't get the same hang that I do, do
> you think it's because of the type of IMAP server UW has?
>
> Scott
>
> > > Just to make sure we're talking about the same thing, what's the number
> > > for the open bug on PPP disconnects causing an IMAP hang?
> >
> >  ??
> >
> > IMAP and POP are separate.
> >
> > There might be some threading contention where a thread is 'busy'
> > waiting for a timeout, but it isn't hanging.
> >
> >
> > > Scott
> > >
> > > On Tue, 2002-11-19 at 14:22, Jeffrey Stedfast wrote:
> > > > they are 1) unrelated and 2) already reported.
> > > >
> > > > Jeff
> > > >
> > > > On Tue, 2002-11-19 at 17:16, Scott Otterson wrote:
> > > > > Why not?  It's clear that there's a bug in evolution and that it's not a
> > > > > fundamental flaw with Linux.
> > > > >
> > > > > Now, if the stop button bug and the PPP-disconnect-hang bug are
> > > > > manifestations of the same problem, then I agree that it doesn't make
> > > > > sense to file a new one -- that is, if there is a non-closed stop button
> > > > > bug and if it is known that these are really the same problem.  
> > > > >
> > > > > Are both these things true?
> > > > >
> > > > > Scott
> > > > >
> > > > > On Tue, 2002-11-19 at 13:33, Jeffrey Stedfast wrote:
> > > > > > please do not submit new bug reports, thanks.
> > > > > >
> > > > > > Jeff
> > > > > >
> > > > > > On Tue, 2002-11-19 at 16:15, Scott Otterson wrote:
> > > > > > > Yes, Ettore, you're right about the stop button not working -- and
> > > > > > > there's at least one bug on it but it was closed as fixed even though it
> > > > > > > wasn't.
> > > > > > >
> > > > > > > Is the stop button problem also causing the PPP-disconnect-induced
> > > > > > > hangs?  Or should I file a separate bug?  Anyway, you're right that this
> > > > > > > isn't a problem with Linux: Mozilla on Linux handles PPP disconnects
> > > > > > > just fine.
> > > > > > >
> > > > > > > Scott
> > > > > > >
> > > > > > > On Tue, 2002-11-19 at 11:38, Ettore Perazzoli wrote:
> > > > > > > > On Tue, 2002-11-19 at 13:12, Jeffrey Stedfast wrote:
> > > > > > > > > > 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.
> > > > > > > >
> > > > > > > > Having the Stop button working properly in all cases in the mailer would
> > > > > > > > be a good starting point though.  ;-)
> > > > > > > >
> > > > > > > > It is true that we have a bug there, and it can be fixed, and there is
> > > > > > > > no reason to blame Linux for it.
> > > > > > > >
> > > > > > > > -- 
> > > > > > > > Ettore Perazzoli <ettore ximian com>
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > _______________________________________________
> > > > > > > evolution maillist  -  evolution ximian com
> > > > > > > http://lists.ximian.com/mailman/listinfo/evolution
> > > > > > -- 
> > > > > > Jeffrey Stedfast
> > > > > > Evolution Hacker - Ximian, Inc.
> > > > > > fejj ximian com  - www.ximian.com
> > > > >
> > > > >
> > > > >
> > > > > _______________________________________________
> > > > > evolution maillist  -  evolution ximian com
> > > > > http://lists.ximian.com/mailman/listinfo/evolution
> > > > -- 
> > > > Jeffrey Stedfast
> > > > Evolution Hacker - Ximian, Inc.
> > > > fejj ximian com  - www.ximian.com
> > >
> > >
> > >
> > > _______________________________________________
> > > evolution maillist  -  evolution ximian com
> > > http://lists.ximian.com/mailman/listinfo/evolution