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4
votes
2answers
3k views

Modifying kernel shared memory settings on a lion install

What's the location of the sysctl.conf file on lion? In Snow Leopard it was in /etc/sysctl.conf but now that folder doesn't contain it anymore. Searching for the file in spotlight yields no results. ...
1
vote
1answer
623 views

Is there a location of the sysctl kernel parameters for osX?

I would like to read up on os X kernel parameters. I can find them listed, but where can I find the meaning of them? things like net.alf.loglevel: 55 ( which are not in the man pages , for either ...
0
votes
1answer
2k views

error: “net.netfilter.nf_conntrack_acct” is an unknown key

i have the next error when i run 'sysctl -p' error: "net.netfilter.nf_conntrack_acct" is an unknown key net.netfilter.nf_conntrack_acct = 1 net.ipv4.netfilter.ip_conntrack_max = 9527600 ...
1
vote
1answer
5k views

Sysctl config for high performance, large activity

We have some server with a huge amount of visitors (every minute, every day). Basically we had a nice fine-tuned sysctl config for this purpose. (If you don't modify it, it starts to behave ...
3
votes
1answer
1k views

Increasing FreeBSD threads

For network apps that create one thread per connection (like Pound), threadcount can become a bottleneck on the number of concurrent connections you can server. I'm running FreeBSD 8 x64: $ sysctl ...
1
vote
1answer
2k views

File-descriptors setting on /etc/sysctl.conf

I have recently learnt that to be able to increase the amount of virtualhosts that we can serve via apache depends on file-descriptors. they say the value should be added to /etc/sysctl.conf as ...
1
vote
1answer
679 views

net.inet.tcp.blackhole option on Fedora

This link: http://www.freebsdblog.org/51/reduce-server-visibility/ suggests a configuration option for FreeBSD that tells the system to drop all packages arriving from the network to a closed port ...
90
votes
4answers
122k views

FreeBSD performance tuning. Sysctls, loader.conf, kernel

I wanted to share knowledge of tuning FreeBSD via sysctl.conf / loader.conf / KENCONF / etc. It was initially based on Igor Sysoev's (author of nginx) presentation about FreeBSD tuning up to ...