Sorry, I forgot to add a subject to my initial sendbug. Hopefully this
updates the thread to give some insight as to what the bug report is
about.
Cheers,
-C
On 12 Apr 2023, at 18:00, Chris Jones wrote:
Synopsis: Experiencing frequent but intermittent network delays for
host bound and transit traffic on my OpenBSD router/firewall after
upgrading from 7.2 to 7.3
Category: system kernel amd64 Environment:
System : OpenBSD 7.3
Details : OpenBSD 7.3 (GENERIC.MP) #1125: Sat Mar 25 10:36:29
MDT 2023
dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
Architecture: OpenBSD.amd64
Machine : amd64
Description:
I noticed that after upgrading from 7.2 to 7.3, frequent but
intermittent network delays. These delays are very brief but when they
happen they typically last from 500 - 900 ms. If I ping my gateway, I
generally get sub millisecond pings (0.400 - 0.700 ms) but
intermittently I'll get an echo replies (typically 1 echo reply) that
can range from 200 - 900ms. Then it returns to the sub millisecond
echo responses for a period of time (no pattern). Because these
"delays" are noticable for both host bound traffic (eg. SSH to the
OpenBSD router) and transit traffic, it affects persistent connections
destined to the router or passing through it.
It's noticible for things like SSH sessions to the OpenBSD router,
video and voice calls, or any other persistent connection. I've looked
at the system processes to see if there are any noticable spikes in
CPU usage, but I'm not seeing anything that stands out.
I'm not noticing these same symptoms for other layer2 traffic. I
can ping other hosts on my LAN and my switch and do not notice this
behaviour, so it's only for connections to or transiting through the
router.
