I would imagine that the processor load is due to indexing and updating a
mailbox, which is a single structured file. IMail IMAP does seems to use
100% processor when doing IMAP over a quick link, I take this to mean that
it's using the available processing power effectively when accepting traffic
at 100Mb, when more sessions are happening concurently it just shares the
available processing power between them.
I was surprised that it took 30mins, this seems like a long time, though I
have not explicitly tested this particular scenario. However many more
things are happening when you use IMAP to transfer the messages than if you
use the file sharing mechanism as it is appending the messages to a
structured file, probably mime encoding and decoding attachments.
What is the memory usage like on your server when you carry out the task?
Steve
Steven Moore
Internet Development Engineer
Research Machines
+44 1235 823522
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Hermann
Strassner
Sent: 18 October 2000 12:24
To: IMail_Forum
Subject: [IMail Forum] IMAP and processor
I use IMAP with a 100 Mb LAN connection. I want to copy a directory with 22
MB in 50 emails from my local storage to the IMAP storage on the mail
server. This takes about 30 minutes, and the mail server (PII/300, 128 MB
RAM, fast SCSI HD) shows 100% Prozessortime to the IMAP Process. I am the
only user (testserver). If i copy the same set of mails from the IMAP
structure to my local storage this takes only a few seconds and does not use
more than 30% processor time.
I did the same on an other server and it looks the same. Is this normal
behaviour, and what the hell is the mail server doing with that much
processor time?
Hermann
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