On 13.05.19 17:05, Gert Doering wrote: > Hi, > > On Mon, May 13, 2019 at 04:20:41PM +0200, mich...@fritscher.net wrote: >> I experienced a high system cpu usage of OpenVPN in qemu on Windows. >> Both with hax and whpx (kvm-like accelerators). Apparently, it does make >> calls to hpet_read (or acpi_pm_read if hpet is disabled) with 1 kHz. >> This makes a overhead ov over 85% regarding the "perf" program. >> Is that normal? It seems to only happen on the server, which also >> streams UDP packets with about 1 MB/sec. > > If you have rate-limiting configured on the server, it needs to > check time vs. buckets - that could be one of the reasons. > > Or if you have too much debugging configured and it needs to timestamp > (lots of) debug lines written out... > > gert >
Hi, I'm not using the shaper functionality of OpenVPN, and verb is set to 3. But we are indeed using tc-htb... Btw, on VMWare I don't see this calls albeit using exactly the same image. I've uploaded the data of the perf run on https://mifritscher.de/austausch/openvpn/ . Best regards, Michael Fritscher
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