Date: Mon, 24 Oct 2011 21:59:11 -0400 From: Arnaud Lacombe <lacombar@gmail.com> To: Ryan Stone <rysto32@gmail.com> Cc: freebsd-net@freebsd.org, Sergey Saley <sergeysaley@gmail.com> Subject: Re: Too much interrupts on ixgbe Message-ID: <CACqU3MXMXQf8CP9trpBo81B9Zxo89SVw8GXsmAA_jw-CWYQyaw@mail.gmail.com> In-Reply-To: <CAFMmRNwOieMM83wHwqukDQy=D5y43ULZOiazVQV0Af5Ad1Tzrw@mail.gmail.com> References: <1319449307149-4931883.post@n5.nabble.com> <CAFOYbc=vM6_UMXCTOUz_mTyTVpCxp61Np68ERH8tx4KE9aT8gA@mail.gmail.com> <1319478384269-4933498.post@n5.nabble.com> <CAFOYbcnF8Q-E0Jocja6LQ8HuwTwkL5ghuo_KWM0uku0mxpNHDw@mail.gmail.com> <1319483324861-4933765.post@n5.nabble.com> <CAFMmRNzYiJz_FigTMLr4iNTr4dhVy%2BbiCgUJ%2BT5uuCvYw6vEPA@mail.gmail.com> <1319485884830-4933934.post@n5.nabble.com> <CAFMmRNwOieMM83wHwqukDQy=D5y43ULZOiazVQV0Af5Ad1Tzrw@mail.gmail.com>
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Hi, On Mon, Oct 24, 2011 at 4:32 PM, Ryan Stone <rysto32@gmail.com> wrote: > On Mon, Oct 24, 2011 at 3:51 PM, Sergey Saley <sergeysaley@gmail.com> wro= te: >> MPD5, netgraph, pppoe.Types of traffic - any (customer traffic). >> Bying this card I counted on a 3-4G traffic at 3-4K pppoe sessions. >> It turned to 600-700Mbit/s, about 50K pps at 700-800 pppoe sessions. > > PPPoE is your problem. =A0The Intel cards can't load-balance PPPoE > traffic, so everything goes to one queue. =A0It may be possible to write > a netgraph module to load-balance the traffic across your CPUs. > NetGraph already runs a thread per CPU, as you can see in top's output. There is also still have plenty of CPU usable, so I'd assume some hard-limit are hit, maybe any of `net.graph.maxdata' or `net.graph.maxalloc'. Sergey, what is the output of: # vmstat -z | grep NetGraph Thanks, - Arnaud
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