On 2007/11/15 23:50, Thomas Althoff wrote:
quoted text
> > Depends which routes you take. You probably want 1GB if you receive 
> > full routes. Given there's no cisco tax on RAM here, this is quite 
> > viable. :-)
> 
> Here's my view with two providers with full routes also running 4.2.

The stats at the end of 'bgpctl reload' are more interesting
if you want to size memory. Especially if you're running on
a secondary storage device you'd rather not swap to.

This is from a peering router (70 sessions, full table split across
a couple of it's neighbours plus about 3500 peer routes) - 1G ram,
amd64 (anyone else who experienced the pae pmap bug will understand;
I would probably choose i386 now...)

This is slightly old code as the box has been up for 6 months (yes,
bgpd is pretty reliable :)

slacking ->

load averages:  0.09,  0.11,  0.11                                               23:07:27
48 processes:  47 idle, 1 on processor
CPU states:  0.0% user,  0.0% nice,  1.0% system,  1.0% interrupt, 98.0% idle
Memory: Real: 249M/489M act/tot  Free: 500M  Swap: 0K/0K used/tot

  PID USERNAME PRI NICE  SIZE   RES STATE    WAIT      TIME    CPU COMMAND
15157 _bgpd      2    0 5844K 6740K sleep    poll    786:34  0.20% bgpd: session engine
27390 _bgpd      2    0   92M   93M sleep    poll    541:17  0.00% bgpd: route decision e
30126 root       2    0   17M   18M sleep    poll     80:31  0.00% bgpd: parent

just finishing up a reload ->

load averages:  0.97,  0.40,  0.22                                               23:09:12
48 processes:  1 running, 46 idle, 1 on processor
CPU states: 95.8% user,  0.0% nice,  1.4% system,  2.8% interrupt,  0.0% idle
Memory: Real: 444M/684M act/tot  Free: 305M  Swap: 0K/0K used/tot

  PID USERNAME PRI NICE  SIZE   RES STATE    WAIT      TIME    CPU COMMAND
27390 _bgpd     56    0  286M  287M run      -       542:56 98.39% bgpd: route decision e
30126 root       2    0   17M   18M sleep    poll     80:31  0.05% bgpd: parent
15157 _bgpd      2    0 5840K 6736K sleep    poll    786:34  0.00% bgpd: session engine

I wouldn't choose to run full tables with <1G.