5 ms·

Is OpenBSD still largely single-threaded or have there been SMP improvements in the network stack over the years? The feature set OpenBSD has is impressive, but

by candl 5y ago

Is OpenBSD still largely single-threaded or have there been SMP improvements in the network stack over the years? The feature set OpenBSD has is impressive, but is there a large gap in networking perf compared to Linux/FreeBSD?

eu 5y ago
From my $work computer: $ uname -a OpenBSD XXXXX 6.9 GENERIC.MP#3 amd64 $top load averages: 0.83, 0.62, 0.44 94 processes: 93 idle, 1 on processor CPU00 states: 0.5% user, 0.0% nice, 0.2% sys, 0.3% spin, 0.6% intr, 98.4% idle CPU02 states: 6.5% user, 0.0% nice, 1.9% sys, 0.4% spin, 0.0% intr, 91.1% idle CPU04 states: 4.9% user, 0.0% nice, 1.6% sys, 0.3% spin, 0.0% intr, 93.1% idle CPU06 states: 4.0% user, 0.0% nice, 1.1% sys, 0.3% spin, 0.0% intr, 94.6% idle CPU08 states: 1.4% user, 0.0% nice, 0.6% sys, 0.2% spin, 0.0% intr, 97.8% idle CPU10 states: 1.4% user, 0.0% nice, 0.5% sys, 0.2% spin, 0.0% intr, 98.0% idle CPU12 states: 0.6% user, 0.0% nice, 0.3% sys, 0.1% spin, 0.0% intr, 99.0% idle CPU14 states: 0.7% user, 0.0% nice, 0.3% sys, 0.1% spin, 0.0% intr, 98.8% idle Memory: Real: 3292M/5988M act/tot Free: 9109M Cache: 1692M Swap: 0K/15G
- tadbit 5y ago
  The person you're responding to was asking about network performance. I imagine specifically regarding pf (packet filter, the firewall component). To the grandparent: PF is still single threaded. If you had performance issues with that before you may still have them, but CPU improvements over time may have negated that impact. It's worth trying it out again.

by candl 5y ago

eu 5y ago

From my $work computer: $ uname -a OpenBSD XXXXX 6.9 GENERIC.MP#3 amd64 $top load averages: 0.83, 0.62, 0.44 94 processes: 93 idle, 1 on processor CPU00 states: 0.5% user, 0.0% nice, 0.2% sys, 0.3% spin, 0.6% intr, 98.4% idle CPU02 states: 6.5% user, 0.0% nice, 1.9% sys, 0.4% spin, 0.0% intr, 91.1% idle CPU04 states: 4.9% user, 0.0% nice, 1.6% sys, 0.3% spin, 0.0% intr, 93.1% idle CPU06 states: 4.0% user, 0.0% nice, 1.1% sys, 0.3% spin, 0.0% intr, 94.6% idle CPU08 states: 1.4% user, 0.0% nice, 0.6% sys, 0.2% spin, 0.0% intr, 97.8% idle CPU10 states: 1.4% user, 0.0% nice, 0.5% sys, 0.2% spin, 0.0% intr, 98.0% idle CPU12 states: 0.6% user, 0.0% nice, 0.3% sys, 0.1% spin, 0.0% intr, 99.0% idle CPU14 states: 0.7% user, 0.0% nice, 0.3% sys, 0.1% spin, 0.0% intr, 98.8% idle Memory: Real: 3292M/5988M act/tot Free: 9109M Cache: 1692M Swap: 0K/15G

tadbit 5y ago
The person you're responding to was asking about network performance. I imagine specifically regarding pf (packet filter, the firewall component). To the grandparent: PF is still single threaded. If you had performance issues with that before you may still have them, but CPU improvements over time may have negated that impact. It's worth trying it out again.