[OpenAFS-devel] AFS and ufs/sds logging on solaris

chas williams chas@cmf.nrl.navy.mil
Wed, 26 Sep 2001 10:49:39 -0400


>>The namei server should work but that's a guess.
>Do not know about "namei" server...

i recently tried the namei fileserver on solaris8 with ufs logging.
i didnt see any problems with the tests i was doing (which was basically
timing the 'vos move' of a volume from one partition to another -- both
were ufs logging partitions on the same machine)

i was trying to determine performance loss (if any) of going to a namei
fileserver.  i know vos dump isnt the best test, but my results were:
it was an ~1G volume with 3000 files (1000 small, 1000 medium, 1000 large)
vicep[ab] was on the same disk (it was an 18G split in half)

'afsinode' afs partitions

	% /bin/time vos move user.chas.foo nova a nova b
	Volume 536893877 moved from nova /vicepa to nova /vicepb 

	real     7:42.3
	real     7:44.6
	real     7:45.0


'namei' afs partitions w/ logging

	% /bin/time vos move user.chas.foo nova b nova a
	Volume 536893877 moved from nova /vicepb to nova /vicepa

	real    10:50.5
	real    10:43.0
	real    10:48.0

so it does seem that namei is a bit slower.  i dont know how this would
affect fileserver performance.  i would hazard a guess that it would be
basically the same drop.  i really should make the vicep seperate disks.