[OpenAFS] File systems on Linux, again.

chas williams - CONTRACTOR chas@cmf.nrl.navy.mil
Fri, 30 Nov 2007 11:42:14 -0500

In message <E2E34866B20B824DA894CA53D1CF0DE204C9E912@ehost005-3.exch005intermed
ia.net>,"Jerry Normandin" writes:
>write performance is actually impressive.  file creation and deletion
>are very slow on afs.

because writing is easier than reading.  the afs cache manager can
group the outgoing writes together and send them in a single message.
while the cache manager has readahead it doesnt work because the afs
global locks blocks any progress the readahead thread might make.