On Thu, Jun 14, 2012 at 11:31:32AM -0500, Tristin Davis wrote:
> Hardware Type: Intel
> Version: OpenBSD 4.3
> Kernel: MP
I'm sorry, we do not support old releases like that. Your best bet is
to upgrade. Things have improved in various areas, inclusing bufcache
and network memory management. To name an example, bufcachepercent is
now runtime changeable.
-Otto
>
>
> I am currently researching some tweaks to increase our network throughput
> on a production server. I have found 3 parameters that I may be interested
> in changing our systems. I have researched and searched google for
> information and impact for the parameters to with little success. What I
> am looking for is an idea of what long term impact of changing these
> parameters and an explicit description of what the modification of each
> kernel parameter will do. These are production sftp servers with a large
> number of connections that are rarely rebooted so it is very important that
> changing these values not cause the system to run out of memory. Can
> anyone help with the descriptions and possible reprecussions of each of
> these parameters?
>
>
> kern.bufcachepercent=90 # Allow the kernel to use up to 90% of the
> RAM for cache (default 10%) <-- Suposally not changable via sysctl
> kern.maxclusters=128000 # Cluster allocation limit
> net.bpf.bufsize=1048576 # Internal kernel buffer for storing packet
> captured packets received from the network
>
> Thank you in advance,
>
> Tristin
