On Tue, 16 Nov 2010, Dave McMurtrie wrote: > I didn't realize that I only responded to Rob here. Perhaps my > additional information will shed some light on the kind of information > I'm looking for. > > -------- Original Message -------- > Subject: Re: Does anyone allow unlimited or extremely large quotas? > Date: Tue, 16 Nov 2010 07:06:53 -0500 > From: Dave McMurtrie <dave64@xxxxxxxxxxxxxx> > To: Rob Mueller <robm@xxxxxxxxxxx> > > On 11/16/2010 06:45 AM, Rob Mueller wrote: >> >>> This may be slightly off-topic, so apologies in advance. Is there >>> anyone out there who allows unlimited quota for their users or provides >>> extremely large quotas when asked for? >> >> What do you consider extremely large? And what sort of problems are you >> referring to? > > I don't actually know what sort of problems I'm referring to, hence the > question. The big problem I can imagine would be opendir() and > readdir() with a huge number of files in a directory, but the cyrus code > doesn't appear to do that in a lot of places that would matter to a user > (deleting an entire folder, delete sieve scripts, etc) in the course of > normal operations. this depends on what filesystem you are useing, I have mailboxes with hundreds of thousands of messages in them on XFS and have no problems, but on ext3 I start seeing slowdowns with a bit over ten thousand messages. >> The usual issue is just the huge number of emails and thus files that >> accumulate. Creating a fresh replica, body searching, reconstructing, >> etc all take quite a bit of time because of the large amount of random >> IOs. Apart from that, everything does actually work ok... > > The only issue we ever had was with a bboard that our network group > sends automated system messages to. Something in their environment went > haywire and we ended up with ~1.5 million messages in that bboard. They > were unable to find a client that was willing to deal with the folder to > be able to clean it up. I was able to connect using imtest and SELECT > and FETCH messages without any problems, though. I also recall that > replication was broken by this folder, but I don't remember exactly why. alpine and mulberry have no problem with huge numbers of messages. David Lang ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/
