26 Oct
1999
26 Oct
'99
2:28 a.m.
On Mon, 25 Oct 1999, Luke Gain wrote:
we went from dir to mailbox format a few months ago.
You mean the other way around?
We have a 740, and the filer went from a sustaned 2k nfs-ops down to ~200 ops and from 1.7mb/sec down to about 70k/sec.
Yep, and now that big investment in the F740 doesn't hurt as much now. :)
evidentally, the netapp only caches names that are <12 characters long. so if the name is >12 characters it takes a disk-op to read the directory.
Is this based on trial-and-error, or has Netapp documented this somewhere?
also, if you use one of the dir permission bits to set flags on the messages it keeps the entry un-modded for snapshots.
Man, talk about abusing the filesystem... ;-)
--
Brian Tao (BT300, taob@risc.org)
"Though this be madness, yet there is method in't"