> No need to patch the code for that - it's an option! Just put: > > berkeley_cachesize: 4096 > > in your /etc/imapd.conf > > We use skiplist for our mailboxes.db and we haven't seen any issues that > were caused by leaving that at its default value. > I need to compile cyrus with skiplist right ? What are the pros and cons of skiplist ? > That said: > > % cat $confdir/db/DB_CONFIG > set_cachesize 0 2097152 1 > set_lg_regionmax 2097152 > set_lg_bsize 2097152 > set_lg_max 16777216 > set_tx_max 200 > set_tas_spins 1 > % > I dont have this file in my db directory ( /var/lib/imap/db ) Do I have to create this file ? > (and no, I didn't set that up, so I'm not sure why all those values. It > works for us though) > > Sounds like your hardware should cope OK with 600 connections: > > [root@imap2 root]$ netstat -n -a | grep :2143 | wc -l > 2232 > > And that's at one of our least busy times. I expect it goes up to 2 or > 3 times that during the U.S. day. > > NOTE: we're using reiserfs for our drives, and that machine has 42 > partitions split over 8 different raidsets via two separate SCSI > controllers, and a split meta configuration that puts the meta data > on RAID1 for speed. Still, it's possible to get an order of magnitude > more connections out of that sort of spec. That's 8Gb of memory in > that machine, and dual hyperthreading Xeons: > Why do you have so many partitions ? And do you run the MTA on the same machine ? Thanks Ram > model name : Intel(R) Xeon(TM) CPU 2.40GHz > stepping : 7 > cpu MHz : 2394.878 > > (there's some headroom left with the memory still too...) > -/+ buffers/cache: 6118564 2193000 > > Bron. ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
