LARGE single-system Cyrus installs?

[Andrew McNamara]

>>> Would'nt it be nice to have a configuration option to completely  
>>> turn off fsync() in Cyrus? If you want, with a BIG WARNING in the  
>>> doc stating NOT TO USE IT unless you know what you doing. :)
>>
>> Its already in imapd.conf(8):
>>
>> skiplist_unsafe
>
>Well shiver me timbers!  Ya'll rock.

Note, however, that fsync() still serves a purpose with data journalling - 
without it, your application writes may be sitting in buffer cache,
and may be arbitrarily re-ordered before hitting the disk. The fsync()
should not return until the blocks have reached the disk (or journal),
and thus forms a syncronisation point (which is critical for maintaining
sanity of on-disk data structures like skiplists).

-- 
Andrew McNamara, Senior Developer, Object Craft
http://www.object-craft.com.au/