So as for the system losing all network connectivity, do you have any
suggestions?
regards,
Dave
Kris Kennaway writes:
On Wed, Aug 03, 2005 at 01:49:32PM +1000, Dave+Seddon wrote:
Greetings,
I'm trying to do some performance testing of a content filtering system, so
I'm trying to get very high HTTP throughput. I've got 4 * HP DL380s with
3.4G Xeon processors (hyper threading) and 1 G RAM, 2 onboard BGEs, and 2 *
2 port EM. Using FreeBSD5.4-stable (as of 2005/08/02) and device polling,
I've configured a large number (246) VLAN interfaces on two machines, and
have apache on one box and siege on the other. Using 'siege -f
/home/my_big_list_of_urls -c 50 --internet' one host does a large number of
request from the other machine. I've been trying to tune for maximum
performance and have been using lots of examples for /etc/sysctl.conf and so
on from the web. Adjusting these settings and running the siege, I've found
the apache server completely loses network connectivity when device polling
is enabled. I've adjusted the HZ lots and found the system survives the
longest set a 15000 (yes it seems very large doesn't it). The problem now
seems to be that I'm running out of mbufs:
--------------------------------------
4294264419 mbufs in use
4294866740/2147483647 mbuf clusters in use (current/max)
This is a FAQ..see the release errata. The short answer is that it's
not a real leak, only a leak in the stats. This is fixed in 7.0 and
might be fixed in 6.0-RELEASE.
Kris
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