Yup. That's why the tuning. WAN performance here is very important.
> latency. From my quick guess math, which sucks, it appears that you can fit 1.2
> to 1.5 megabytes on the wire (100mbit machine<-> machine) times 100-120ms wire
Hmm. 100/8 is about 12, no?
> time. This is a rather large number, so you may want to see what hosts really
> support, perhaps starting with 64k or 128k and work up. Make sure that you have
> window scaling turned on if you go with very large windows.
Yes, we have that enabled too.
> Also, have you upped your socket buffers to match your window sizes?
We are using straight ftp for the testing.
> Last, solaris tends to have poorly tuned tcp values out of the box, look at
> this link and tune the solaris stack to better reflect reality.
> http://www.google.com/search?q=cache:www.rvs.uni-hannover.de/people/voeckler/tune/EN/tune.html+%2Bwan+%2Bwindow+%2Bscale+%2Bsize+%2Bnetwork&hl=en
>
> linux tuning has a decent amount of data in the docs section of the kernel
> sources.
I'll take a look. THanks.
Tim
-- Tim Sailer <sailer@bnl.gov> Cyber Security Operations Brookhaven National Laboratory (631) 344-3001 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/