Zenja-
For your first run through on a by the book network stack, it seems you are doing great. Further optimizations may reveal themselves over time; creating more user space drivers is surely moving the ball forward for Haiku. You will likely discover implementations in the current kernel that could be improved upon in the process! Keep on hacking! Regards, Brian From: Zenja Solaja Sent: Sat 3/17/2007 4:02 AM To: openbeos@xxxxxxxxxxxxx Subject: [openbeos] Re: Quick query about network benchmarks Sorry for responding to my own post, but when I remove all debug output from the code, I get a much more reasonable ping response time of 0.18ms (matches Zeta stack, which runs in kernel space). Running TOP shows a CPU user space code at 4.6 %, with a Zeta reference of 3.0, so I guess that that is penalty of running a stack from user space. Now to chapter 12 - UDP.On 3/16/07, Zenja Solaja <solaja@xxxxxxxxx> wrote: Hi everyone.
More for experimental purposes than anything else, I've picked up Douglas Comers books on networking last week, and I'm playing with a from scratch net-stack, running in user space under Zeta. I'm trying to create a single-memcpy stack (from driver to application buffer in user space), even for fragmented IP packets. So in a week since I've started, I've got to chapter 9 which explains ICMP. For a user-land stack, I get a ping of 0.54ms. Just for reference, the Zeta stack in kernel space gives me 0.18ms for the same connection.Out of curiosity, does anyone remember the ping speed to a machine on the local network using user space networking. Sadly I still cannot get my USB keyboard working under Haiku so I cannot perform the experiment myself.
Cheers everyone.
