Date: Thu, 21 Dec 2017 22:03:32 +0100 From: "Kristof Provost" <kristof@sigsegv.be> To: "Michael Grimm" <trashcan@ellael.org> Cc: freebsd-net@freebsd.org, freebsd-jail@FreeBSD.org Subject: Re: performance issue within VNET jail Message-ID: <DB5DE737-7171-4953-AF98-45F1BE7AF09E@sigsegv.be> In-Reply-To: <8102F5FD-DCFC-4EF8-A443-9E6C9EB1F467@ellael.org> References: <4F5EE3F6-0163-4435-8726-56B0D4AE9FAF@ellael.org> <B6446660-9FD2-4C28-A3A2-8AC99624C7FF@sigsegv.be> <8102F5FD-DCFC-4EF8-A443-9E6C9EB1F467@ellael.org>
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On 21 Dec 2017, at 21:50, Michael Grimm wrote: > Kristof Provost <kristof@sigsegv.be> wrote: >> >> On 21 Dec 2017, at 21:24, Michael Grimm wrote: > >>> I do have to admit that I am lost here, and that I cannot think >>> about what is going wrong. The last download I did try at my old >>> severs has been some weeks ago. Ever since I did upgrade FreeBSD >>> 11.1-STABLE, and I did move my infrastructure from bare metal to >>> cloud, thus I cannot test anymore if my old servers would have shown >>> that performance issue in the meantime. >>> >>> Thus any feedback is highly recommended! > >> Can you try turning off TSO? (`ifconfig $ifname -tso`) >> >> There have been issues with pf and TSO checksums, which looked a lot >> like this (i.e. bad TCP performance). Those problems should be fixed, >> but this is easy to test. >> > > I did try it, but without success. > Hmm. I’ve got no ideas at the moment. I run a very similar setup (although on CURRENT), and see no performance issues from my jails. Can you test a performance test without pf? Perhaps from the local LAN for example? That should help narrow it down a bit, at least. Regards, Kristof
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