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the TCP settings suggested here https://wiki.netbsd.org/tutorials/tuning_netbsd_for_performance/ but this post looks out of date, and it didn't increase performance.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
