On Mon, 17 Jul 2006, Marcus Barczak wrote: > > I'm currently doing some performance tuning on a pretty heavily used > exim server we have here. We're running FreeBSD 6.1 and am noticing > the disk loading to be quite high. The filesystems are currently > configured as UFS however i'm contemplating using tunefs to switch > them to FFS with soft updates enabled.
UFS and FFS are the same, though in BSD "UFS" refers to a layer between the VFS and the on-disk structure, which could be FFS or (in the past) LFS. > I was wondering if anyone had any positive or negative experience > with using ffs+soft updates with exim on a FreeBSD system? I > understand the risk of losing data in the event of a power failure > (soft updates not being written to disk immediately). Note that Exim calls fsync whenever anything important happens to a message, and softupdates guarantees that fsync works properly, i.e. that the file and all its metadata will be committed to disk. Therefore if you have a crash, you'll only lose messages which you had not yet completely received - i.e. the senders will still have them. Tony. -- <[EMAIL PROTECTED]> <[EMAIL PROTECTED]> http://dotat.at/ ${sg{\N${sg{\ N\}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}\ \N}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}} -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
