[OpenAFS] strange upload with win 1.6.pre3

Lars Schimmer l.schimmer@cgv.tugraz.at
Mon, 28 Mar 2011 10:50:33 +0200


I just recognize some strange behaviour:
server is openafs on debian.
Start options: parm /usr/lib/openafs/fileserver -L -udpsize 131071=20
-sendsize 131071 -rxpck 700 -p 128 -b 600 -nojumbo -cb 1500000

Client is OpenAFS 1.6pre3 on windows7 64bit. no encryption, SSD drive.

Fetching a 5GB file from the fileserver is in the 50-60 MB/sec area. No=20
Writing the same file back into a subdir of the directory it was fetched=20
from is in the 5 MB/sec area.
Thats not fine.
Some simple stats fetched with top and task manager showing me CPUs are=20
mostly idle and the storage of fileserver while writing, to.

I guess writing speed should be higher, or?
Any tips on howto improve checks for problems with this upload speed?

 From a linux64bit 1.6.pre3 (debian) I can push another 5 GB file within=20
the 20MB/sec area into the same directory/fileserver (usual SATA drive=20
for OpenAFS cache).

Lars Schimmer
TU Graz, Institut f=FCr ComputerGraphik & WissensVisualisierung
Tel: +43 316 873-5405       E-Mail: l.schimmer@cgv.tugraz.at
Fax: +43 316 873-5402       PGP-Key-ID: 0x4A9B1723