Good morning, folks.
I've seen discussion in earlier threads on this list indicating that
there is some performance penalty for UIDPLUS support in unix-style
mailboxes. However, I'm seeing significantly more than "some" penalty in
my limited testing.
When moving messages to mailboxes of moderate-to-large size (the worst
offender is ~940MB w/ ~3600 messages), the operation can take anywhere
from 1 to 2 minutes using imap-2006c1, where imap-2004g on the same server
completes in imperceptible time.
My configuration is:
Server: Solaris 9, imap-2004g vs imap-2006c1, both compiled with
"make gso SSLDIR=/usr/local SSLTYPE=unix \
EXTRALDFLAGS=-R/usr/local/lib"
Client: Pine 4.64 compiled with default c-client.
MIX-format mailboxes perform much better, as I'm sure is expected.
So.. is there anything I can do to lessen the pain here short of
converting to another mailbox format? Can I disable UIDPLUS for certain
mailboxes, or perhaps for the unix format globally? Is there a performance
gain to be had by re-compiling pine with the 2006c1 c-client? If so,
should I expect similar slowness from other imap clients when I deploy
this server version?
Thanks for any input.
Chris Miller
Princeton CS Department
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