Thanks Marcin, I applied your settings wholesale on my test server.
With your settings 10 MB/s and 7.9 MB/s Default settings 17.6 MB/s and 18.2 MB/s So, unfortunately the whole package is not helping. I did not test settings individually though. On Fri, Oct 24, 2025 at 1:56 PM Marcin Gondek <[email protected]> wrote: > > Hi Peter, > > I've using my below settings: > https://fido.e-utp.net/2025/01/22/NETBSD-SYSCTL.html > > Some of them you already used, I've compiled it from many places, they help > me to speed-up NetBSD. > > Thanks, > > -- > Marcin Gondek / Drixter > http://fido.e-utp.net/ > AS56662 > > -----Original Message----- > From: [email protected] <[email protected]> On Behalf > Of Peter Miller > Sent: Friday, October 24, 2025 8:41 PM > To: NetBSD Users <[email protected]> > Subject: Slow 'real world' network performance > > When I test my VPS server (virtualized server) with iperf3 or speedtest-cli, > I get 700 Mbit/s. (it varies of course depending on network congestion) If I > run a test server like this > > python3.12 -m http.server -b $my_ip > > and then download 100MB and 1000MB test files, I only get 80 Mbit/s. I have > seen as bad as 4 Mbit/s, when seconds later I can test 400 Mbit/s on iperf3. > > These aren't one off results. I have 3 virtual servers with different hosts > and locations, and the performance gap is similar on all of them. With Linux, > FreeBSD and OpenBSD I get download speeds inline with iperf3 test results. > > Last night I did my python server test on the same server, downloading the > 1000 MB file to my FreeBSD laptop and got: > NetBSD 160 Mbit/s > FreeBSD 640 Mbit/s > OpenBSD 528 Mbit/s (it got to 640 Mbit/s but averaged 528) I didn't test > Linux (Debian) last night, but it's usually similar to FreeBSD > > Does anyone have suggestions on where to look next or some settings that > might help. I have tried the TCP settings suggested here > https://wiki.netbsd.org/tutorials/tuning_netbsd_for_performance/ > but this post looks out of date, and it didn't increase performance. > > -- > Thanks > Peter -- Thanks Peter
