how can i fix this: I have a 4 disk raid array which should be able to saturate my 1G-ethernet lan. I transferred a 4GB+ file from my server to a windows vista rc2 client and saw that i'm only using 15% of the available bandwidth. so i looked at my server and i saw that there is just as much disk activity on hda1 as there is on md0. so logically i assume it is copying it to hda1(OS) before it is sending it. So it is reading it off the fast md0 array, writing the file and then reading off a slow hard disk it as it is sending it over the lan!!!! Bloody genius.

how can i stop this? is there as switch to stop cacheing??

FC6 is the distro....

any ideas???

any ideas two????

Bumping your post is counter-productive:
http://www.linuxquestions.org/questi...67#post2516367

Since you are getting no responses, maybe you should re-cast your Q, this might help: How To Ask a Question, also the Raymond & Moen article referenced therein.

If you haven't read it already, this might also be helpful: http://www.linuxquestions.org/linux/...xQuestions_org

Speaking for myself only, I find your style borderline unreadable: Needs better paragraphing & better attention to traditional & well as computer capitalization. ("i", "how", "lan", ...)
If you think I'm being too picky, read what Raymond & Moen have to say about the perceived thinking of the author of a sloppily written Q, as well as their opinion of his/her respect for the kind & generous folk it is being asked of.

HTH, rather than seems like a flame. I am interested in seeing the solution to your problem.

Can you verify that you are using the correct settings on the nic? For example you may be set up using 100mb half duplex.

Also, verify there are no packet filters running on either machine, like firewalls etc...

thanks for the reply. i can ftp files to my raid array and i get more then 110MB/sec, where as i only get about 12MB/sec thru samba. samba seems to copy to from my raid array to hda before sending the file over the net. almost like there is some sort of caching option which is on by default.

i will have to check for packet filters. i have firestarter, and have opened up the IP addresses of my internal network.

is there somewhere i can find all the undocumented switches in samba???

I've had luck googling samba. It could be a windows problem. Is it faster using samba between two linux machines?