On Thu, 26 Sep 2024 11:59:17 +1000
David Gibson
On Wed, Sep 25, 2024 at 12:36:43PM -0400, Jon Maloy wrote:
I made many runs with iperf3 ns->host, and the results are puzzling me. Over and over again, I see throughput practically collapse, with a two orders of magnitude decrease. Just to make sure this wasn't something introduced by me, I went back to the master branch and disabled the SO_PEEK_OFF feature. The result was the same. The below log shows typical run, but it is highly variable. Sometimes almost the whole series is in the 50-70 Gb/s range, and sometimes almost all in the 100-300 Mb/s range. When I added the kernel fix it didn't seem to make any difference.
To me this is really worrying, and should be investigated.
Those numbers are certainly worrying. Like Stefano, though, I have
...not...?
encountered this myself.
-- Stefano