Re: lots of network interfaces

2013-03-09 Thread Lowell Gilbert
Wojciech Puchar writes: >>> very usable at that point, ifconfig aside). >> >> The interfaces are a linked list, plus there's a separate kernel dive >> for each interface. The list (as opposed to individual interfaces) is > > i don't care how fast ifconfig displays them, just for how fast things

Re: lots of network interfaces

2013-03-08 Thread Wojciech Puchar
very usable at that point, ifconfig aside). The interfaces are a linked list, plus there's a separate kernel dive for each interface. The list (as opposed to individual interfaces) is i don't care how fast ifconfig displays them, just for how fast things like routing or ipfw rule like "via t

Re: lots of network interfaces

2013-03-08 Thread Lowell Gilbert
writes: > I decided to stress-test the netgraph(4) subsystem one day and was able to > create 65530 interfaces before it produced an error, refusing to create > another. > > At that point, the system was still usable, but... > > It took over an hour for ifconfig to list all the interfaces. Simpl

Re: lots of network interfaces

2013-03-08 Thread Wojciech Puchar
You wrote 8 ? 2013 ?., 20:14:59: WP> i am not because i don't do this now, and ask BEFORE planning. I know ISP, who uses FreeBSD with mpd5 as BRAS for PPPoE. They uses exactly what i want, just with vtun. So it will go fine. thank you. ___ free

Re: lots of network interfaces

2013-03-08 Thread Lev Serebryakov
Hello, Wojciech. You wrote 8 марта 2013 г., 20:14:59: WP> i am not because i don't do this now, and ask BEFORE planning. I know ISP, who uses FreeBSD with mpd5 as BRAS for PPPoE. They uses ngX, not tunX, but as far as I understand, their systems has thousands such interfaces (~2500 per machin

Re: lots of network interfaces

2013-03-08 Thread Wojciech Puchar
i am asking for ca 800 tun(4) interfaces active but no more than 250Mbit/s over them total. Do you hit CPU limits at that point? i am not because i don't do this now, and ask BEFORE planning. Adrian ___ freebsd-hackers@freebsd.org mailing lis

RE: lots of network interfaces

2013-03-07 Thread dteske
I decided to stress-test the netgraph(4) subsystem one day and was able to create 65530 interfaces before it produced an error, refusing to create another. At that point, the system was still usable, but... It took over an hour for ifconfig to list all the interfaces. Simply typing "ifconfig" wit

Re: lots of network interfaces

2013-03-07 Thread Adrian Chadd
On 7 March 2013 03:24, Wojciech Puchar wrote: > are there any scalability limits in case of lots of network interfaces. > i am asking for ca 800 tun(4) interfaces active but no more than 250Mbit/s > over them total. Do you hit CPU limits at that point? Adrian __