What is the listserver at hub.org doing?
When I got a new message from Tom Lane at 7:30am in England, I wondered
if he was working on PostgreSQL all night as well as all day, so I looked
at the mail headers and found he had posted in mid-evening his time but
the message had taken 6 hours to be forwarded.
I got curious about the delays in mail forwarding through the mailing
lists and looked at the headers of some messages (see below). It seems
that a message arrives at hub.org and then gets sat on for a few hours
before it is sent out again. Sometimes it does an internal loop and
gets sat on twice! (By comparison, the Debian listserver resends messages
within a minute.)
The result is that messages take a long time to get out on the mailing
list and so are answered unnecessarily by several people.
Why does this happen?
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--
Oliver Elphick Oliver.Elphick@lfix.co.uk
Isle of Wight http://www.lfix.co.uk/oliver
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========================================
"If a man abide not in me, he is cast forth as a
branch, and is withered; and men gather them, and cast
them into the fire, and they are burned."
John 15:6
"Oliver Elphick" <olly@lfix.co.uk> writes:
When I got a new message from Tom Lane at 7:30am in England, I wondered
if he was working on PostgreSQL all night as well as all day, so I looked
at the mail headers and found he had posted in mid-evening his time but
the message had taken 6 hours to be forwarded.
hub.org's mail forwarding has been seriously ill since about Monday...
the delays are not only much larger than normal, but wildly erratic
(anywhere from 1 to 6 hours, for messages posted at the same time!).
Dunno what Marc is doing about this, but I hope he gets it fixed soon.
It's a real PITA if you're trying to follow a discussion.
regards, tom lane
Date: Fri, 27 Oct 2000 08:08:09 +0100
From: "Oliver Elphick" <olly@lfix.co.uk>
I got curious about the delays in mail forwarding through the mailing
lists and looked at the headers of some messages (see below). It seems
that a message arrives at hub.org and then gets sat on for a few hours
before it is sent out again. Sometimes it does an internal loop and
gets sat on twice! (By comparison, the Debian listserver resends messages
within a minute.)
The result is that messages take a long time to get out on the mailing
list and so are answered unnecessarily by several people.
Why does this happen?
We had these problems on sourceware.cygnus.com (now
sources.redhat.com), which was (and is) running a number of large
mailing lists. The problem was, in a word, sendmail. We fixed it by
switching to qmail (http://www.qmail.org/). Mail delivery on the
mailing lists dropped from hours to seconds.
Ian
uOn 27 Oct 2000, Ian Lance Taylor wrote:
Date: Fri, 27 Oct 2000 08:08:09 +0100
From: "Oliver Elphick" <olly@lfix.co.uk>I got curious about the delays in mail forwarding through the mailing
lists and looked at the headers of some messages (see below). It seems
that a message arrives at hub.org and then gets sat on for a few hours
before it is sent out again. Sometimes it does an internal loop and
gets sat on twice! (By comparison, the Debian listserver resends messages
within a minute.)The result is that messages take a long time to get out on the mailing
list and so are answered unnecessarily by several people.Why does this happen?
We had these problems on sourceware.cygnus.com (now
sources.redhat.com), which was (and is) running a number of large
mailing lists. The problem was, in a word, sendmail. We fixed it by
switching to qmail (http://www.qmail.org/). Mail delivery on the
mailing lists dropped from hours to seconds.
the problem here, in two words, is "slashdot effect" ... one of our
clients sites became very popular the beginning of this week, and altho he
expected it, he didnt' forwarn us.
We have a new machien coming in to which we are moving all our mail
services, including the mailing lists, so that they are unaffected by web
traffic.