Re: [DNG] strange mutt pauses
In article <20210414224738.inwlh5i3ho3iu...@topoi.pooq.com>, Hendrik Boom wrote: >On Thu, Apr 15, 2021 at 05:40:25AM +1000, onefang wrote: >> On 2021-04-14 17:49:45, d...@d404.nl wrote: >> > On 14-04-2021 16:19, Hendrik Boom wrote: >> I use fetchmail to gather emails from my various email providers, that >> dumps them into my local IMAP server. >> >> I suspect the difference was the computers, not the version of neomutt. >> Or it could just be if the check of IMAP stumbles across the fetchmail >> process updating the IMAP folders. Or perhaps this later version mostly >> fixed that pause. Maybe some combination of the three. > >I do not use IMAP. postfix just puts everything in to my mbox of incoming >email. > >Anyone know how synchronisation between mutt and postfix works? I presume >it's only needed when exiting mutt and it rewrites the file... or is the >mechanism something different? Usually and with maildir there is not much synchronization: postfix drops the mail into the filesystem, and mutt sooner or later finds out that there is new mail. Everything else is just Unix (or the more modern variations of it), these days I would suppose mutt is using dnotify to find out that the directory has changed instead of just polling. In case of mbox file locking is used so that not two programs write to the mbox file at the same time or read it while it is written - file locking is a bit of black magic under Unix (flock/lockf/dotlock - and the interworkings in case of remote filesystems). If you need to know more an can not just move to Maildir ask me, I might elaborate. cu AW -- [...] If you don't want to be restricted, don't agree to it. If you are coerced, comply as much as you must to protect yourself, just don't support it. Noone can free you but yourself. (crag, on Debian Planet) Arne Wichmann (a...@saar.de) ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] strange mutt pauses
On Thu, Apr 15, 2021 at 05:40:25AM +1000, onefang wrote: > On 2021-04-14 17:49:45, d...@d404.nl wrote: > > On 14-04-2021 16:19, Hendrik Boom wrote: > > > I have an unreliable connection between my server and the rest of the > > > world. > > > Yes, I'm going to have to deal with that; it's not what I'm asking about. > > > > > > I have a reliable wired connection from my laptop to my server. > > > And I run mutt on my server, connecting to it by ssh. > > > > > > What puzzles me is that every now and then, communication from my laptop > > > to > > > mutt mysteriously pauses. After a while, it resumes. > > > > > > Using a separate ssh connection to root on the server (which I use to > > > monitor my unreliable connectino to the rest of the world), I've noticed: > > > > > > That separate ssh connection stays up when mutt blocks. But using > > > ifconfig on that separate ssh connection tells me that pppoe connection > > > to > > > the rest of the world is off when mutt blocks. > > > > > > Why does mutt block, not even letting me type into the editor for an > > > email > > > I plan to send, when the ppp connection is down? What does mutt have to > > > do > > > with an internet connection? Isn't that postfix/s job? > > > > > > -- hendrik > > > > Most likely it does do a domain name lookup which times out by lack of a > > ppp connection. > > I've been using neomutt. On ASCII it was renamed to mutt, on Beowulf > they named it back to neomutt, and the mutt package is actual mutt. I > dunno which one you are using. I'm running ascii, and the package mutt is installed, so I suspect based on what you say it must be neomutt. > > ASCII was on my old desktop, and Beowulf is on my new super desktop. I > use a local IMAP server running on the same computer in each case. The > ASCII version on the old computer would do that sort of mysterious pause > where all you can do is wait for it to unpause. The Beowulf version on > the new computer does that rarely. It was very annoying under ASCII, not > so much under Beowulf. That sounds like the pause I'm experiencing. > > I use fetchmail to gather emails from my various email providers, that > dumps them into my local IMAP server. > > I suspect the difference was the computers, not the version of neomutt. > Or it could just be if the check of IMAP stumbles across the fetchmail > process updating the IMAP folders. Or perhaps this later version mostly > fixed that pause. Maybe some combination of the three. I do not use IMAP. postfix just puts everything in to my mbox of incoming email. Anyone know how synchronisation between mutt and postfix works? I presume it's only needed when exiting mutt and it rewrites the file... or is the mechanism something different? > > The Beowulf version does have a problem with showing the O old email > marker as N new email (a known bug). Which is even more annoying. I'm > considering installing ASCII in a VM on this new super desktop, and > running the ASCII version in it. If I do that, I might find out if the > pause gets worse. > > (For reference, old computer was an 11 year old AMD system with 8 GB of > RAM, new super desktop is an AMD Threadripper with 256 GB of RAM.) Mine is about as old; but only 2GB of RAM. -- hendrik ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] strange mutt pauses
On 2021-04-14 17:49:45, d...@d404.nl wrote: > On 14-04-2021 16:19, Hendrik Boom wrote: > > I have an unreliable connection between my server and the rest of the > > world. > > Yes, I'm going to have to deal with that; it's not what I'm asking about. > > > > I have a reliable wired connection from my laptop to my server. > > And I run mutt on my server, connecting to it by ssh. > > > > What puzzles me is that every now and then, communication from my laptop to > > mutt mysteriously pauses. After a while, it resumes. > > > > Using a separate ssh connection to root on the server (which I use to > > monitor my unreliable connectino to the rest of the world), I've noticed: > > > > That separate ssh connection stays up when mutt blocks. But using > > ifconfig on that separate ssh connection tells me that pppoe connection to > > the rest of the world is off when mutt blocks. > > > > Why does mutt block, not even letting me type into the editor for an email > > I plan to send, when the ppp connection is down? What does mutt have to do > > with an internet connection? Isn't that postfix/s job? > > > > -- hendrik > > Most likely it does do a domain name lookup which times out by lack of a > ppp connection. I've been using neomutt. On ASCII it was renamed to mutt, on Beowulf they named it back to neomutt, and the mutt package is actual mutt. I dunno which one you are using. ASCII was on my old desktop, and Beowulf is on my new super desktop. I use a local IMAP server running on the same computer in each case. The ASCII version on the old computer would do that sort of mysterious pause where all you can do is wait for it to unpause. The Beowulf version on the new computer does that rarely. It was very annoying under ASCII, not so much under Beowulf. I use fetchmail to gather emails from my various email providers, that dumps them into my local IMAP server. I suspect the difference was the computers, not the version of neomutt. Or it could just be if the check of IMAP stumbles across the fetchmail process updating the IMAP folders. Or perhaps this later version mostly fixed that pause. Maybe some combination of the three. The Beowulf version does have a problem with showing the O old email marker as N new email (a known bug). Which is even more annoying. I'm considering installing ASCII in a VM on this new super desktop, and running the ASCII version in it. If I do that, I might find out if the pause gets worse. (For reference, old computer was an 11 year old AMD system with 8 GB of RAM, new super desktop is an AMD Threadripper with 256 GB of RAM.) -- A big old stinking pile of genius that no one wants coz there are too many silver coated monkeys in the world. ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
Re: [DNG] strange mutt pauses
On 14-04-2021 16:19, Hendrik Boom wrote: > I have an unreliable connection between my server and the rest of the > world. > Yes, I'm going to have to deal with that; it's not what I'm asking about. > > I have a reliable wired connection from my laptop to my server. > And I run mutt on my server, connecting to it by ssh. > > What puzzles me is that every now and then, communication from my laptop to > mutt mysteriously pauses. After a while, it resumes. > > Using a separate ssh connection to root on the server (which I use to > monitor my unreliable connectino to the rest of the world), I've noticed: > > That separate ssh connection stays up when mutt blocks. But using > ifconfig on that separate ssh connection tells me that pppoe connection to > the rest of the world is off when mutt blocks. > > Why does mutt block, not even letting me type into the editor for an email > I plan to send, when the ppp connection is down? What does mutt have to do > with an internet connection? Isn't that postfix/s job? > > -- hendrik > ___ > Dng mailing list > Dng@lists.dyne.org > https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng Most likely it does do a domain name lookup which times out by lack of a ppp connection. Grtz Nick signature.asc Description: OpenPGP digital signature ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
[DNG] strange mutt pauses
I have an unreliable connection between my server and the rest of the world. Yes, I'm going to have to deal with that; it's not what I'm asking about. I have a reliable wired connection from my laptop to my server. And I run mutt on my server, connecting to it by ssh. What puzzles me is that every now and then, communication from my laptop to mutt mysteriously pauses. After a while, it resumes. Using a separate ssh connection to root on the server (which I use to monitor my unreliable connectino to the rest of the world), I've noticed: That separate ssh connection stays up when mutt blocks. But using ifconfig on that separate ssh connection tells me that pppoe connection to the rest of the world is off when mutt blocks. Why does mutt block, not even letting me type into the editor for an email I plan to send, when the ppp connection is down? What does mutt have to do with an internet connection? Isn't that postfix/s job? -- hendrik ___ Dng mailing list Dng@lists.dyne.org https://mailinglists.dyne.org/cgi-bin/mailman/listinfo/dng
