Incredibly slow file saving
OK, I've got an issue.... I'm a beta tester for a particular CAD package that runs under wine. Considering most full-featured CAD packages are incredible bloatware, it runs pretty well.
Except when you go to save a file. I've been watching this thing try to save a 5MB file for about 15 minutes. Since the directories are NFS mounted, and I have gkrellm running on both the server and my workstation, I can watch network and disk activity.
I was told that wu-ftpd is very old and has a lot of security holes...
The network is running at about 30K-sec; no problem there. The disk drives, though, are running at 2-3 MB-sec, sustained. top shows that the nfsd that's handling the connection is waiting on disk IO.
1626 root 15 0 0 0 0 S 0.7 0.0 1:31.85 nfsd 1631 root 15 0 0 0 0 D 0.7 0.0 1:30.92 nfsd
These are 4 LVD SCSI drives in a software raid, that can sustain lots and lots of IO.
There are few things out there, but you'll have to look into them on your own. Apt-proxy is good for, like, a group of machines (one downloads...
There's nothing else on the network; right now it's only me, the server, and the firewall, so no network activity, no other huge operations on the server.
How can 30K transfer rate on a network saturate a SCSI RAID pack?
WTF is wine-cad package doing?
Is there something really whacked with my nfs config?
I am mounting home directories thus:
tooth:-home-nfs home-nfs nfs rsize=8192,wsize=8192,intr,rw,auto
iozone says that's OK for my system....
The only thing I can think of is that wine is writing really, really tiny increments of data - say 1 or 2 bytes at a time and nfs is writing 8K for every byte????? I'm stumped on how to diagnose this......
Any thoughts?
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