On 08/18/2015 06:10 PM, Sam Varshavchik wrote: > Grant writes: > >> I'm using courier-imap with roundcube. Browsing email is fast with >> just 1 or 2 users but becomes extremely slow with 5 users. How should >> I look into improving performance for multiple users? > > By determining exactly where the performance problem is. There could be > several reasons: insufficient bandwidth, insufficient memory, > insufficient CPU; or a few other things. "Improving performance" is not > just some button that one only need to push, and make it happen. > > Use standard system administration tools, like top, iostat, netstat, and > others, to analyze and profile your server. Once you are confident that > you know exactly where the bottleneck is, only then you can plan what > needs to be done. >
Sorry for replying to wrong message in the thread - missed the original one. From what i remember running courier-imap / maildir / webmail, 2 things are usually improve performance if slowing down starts with single-digit users: 1. imap-proxy 2. filesystem of NFS server that can do fast listing of directories containing thousands of files (we used NetApp filers). Just my experience though - a lot changed since i'm sure. > > > ------------------------------------------------------------------------------ > > > > _______________________________________________ > Courier-imap mailing list > Courier-imap@lists.sourceforge.net > Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-imap > ------------------------------------------------------------------------------ _______________________________________________ Courier-imap mailing list Courier-imap@lists.sourceforge.net Unsubscribe: https://lists.sourceforge.net/lists/listinfo/courier-imap
