[Dovecot] new configure-option --disable-index

[Marten Lehmann]

Hello,

> can we have some numbers?

between 09:00 and 09:59 there were 24586 logins, between 10:00 and 10:59 
there were 26296.

> how many concurrent connections?

Its to laborious to check in detail, but with 7.3 logins per seconds and 
an average download time of at least 20-30 seconds (usually faster, but 
the system slowed down) there are a lot and all of them are waiting for 
NFS-calls to finish.

> how did you compile dovecot?

I compiled with:

./configure \
         --prefix=/pop3/dovecot-%{version} \
         --with-rundir=/pop3/dovecot-%{version}/var \
         --disable-ipv6 \
         --without-bsdauth \
         --without-checkpassword \
         --without-ldap \
         --without-pam \
         --without-passwd \
         --without-prefetch-userdb \
         --without-shadow \
         --without-static-userdb \
         --without-vpopmail \
         --with-ssl=openssl \
         --with-storages=maildir

> do you use epoll/inotify?

I guess now (unless its default), but I have never heard of.

> for me the index even helps for just opening the folder via imap.

Yes, for IMAP it may be fine. But I'm talking about a plain POP3-dovecot 
where an index is not required.

> having
> an up2date index speeds up reading the folder via imap drastically.

I'm not sure about this using NFS.

> did you try to store the indexes locally on the disk? you can configure
> that at runtime.

Why do I have to store indexes at all? I don't want a second folder for 
all the indices. And after all, they wouldn't make sense, because more 
than one pop3 server could be accessing the NFS-mailboxes at the same 
time (thats what the outsourcing of the mailboxes to an NFS-share was 
ment for).

Regards
Marten