Messages in this thread | | | Date | Mon, 20 Apr 2015 12:03:02 +0100 | Subject | Re: [Xen-devel] "tcp: refine TSO autosizing" causes performance regression on Xen | From | George Dunlap <> |
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On Thu, Apr 16, 2015 at 1:42 PM, Eric Dumazet <eric.dumazet@gmail.com> wrote: > On Thu, 2015-04-16 at 11:01 +0100, George Dunlap wrote: > >> He suggested that after he'd been prodded by 4 more e-mails in which two >> of us guessed what he was trying to get at. That's what I was >> complaining about. > > My big complain is that I suggested to test to double the sysctl, which > gave good results. > > Then you provided a patch using a 8x factor. How does that sound ? > > Next time I ask a raise, I should try a 8x factor as well, who knows, > it might be accepted.
I see. I chose the value that Stefano had determined had completely eliminated the overhead. Doubling the value reduces the overhead to 8%, which should be fine for a short-term fix while we git a proper mid/long-term fix.
-George
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