Date: Tue, 3 May 2011 19:11:17 -0400 From: Arnaud Lacombe <lacombar@gmail.com> To: Jack Vogel <jfvogel@gmail.com> Cc: Olivier Smedts <olivier@gid0.org>, FreeBSD current mailing list <current@freebsd.org>, Michael Schmiedgen <schmiedgen@gmx.net>, Mike Tancsa <mike@sentex.net> Subject: Re: problems with em(4) since update to driver 7.2.2 Message-ID: <BANLkTi=STPT13-50dxMRgjLP_pyxL9Utyw@mail.gmail.com> In-Reply-To: <BANLkTin1ykoo80%2B9iWe%2Bg5ib1DXw%2B05BgQ@mail.gmail.com> References: <BANLkTinrfZbO%2BMUDDuzsoaN1y-=_O8LgNA@mail.gmail.com> <4D94A354.9080903@sentex.net> <AANLkTik_XPsVWL-KqHkPic1KQ0SdCSk6u_9ykRefi3VE@mail.gmail.com> <BANLkTi=K5ASG9TWLAh5r%2Bzo9Wy1stMf9WA@mail.gmail.com> <BANLkTikPPzxZ6XRAaqrvdeXBp=Ydvz7hNg@mail.gmail.com> <BANLkTi=rhZ0dyO6Zq13jY6-NKVE8n24YyQ@mail.gmail.com> <4DC07013.9070707@gmx.net> <BANLkTi=DmQsVvJOaoxMr5GPOLkjs7sdTxQ@mail.gmail.com> <4DC078BD.9080908@gmx.net> <BANLkTin1ykoo80%2B9iWe%2Bg5ib1DXw%2B05BgQ@mail.gmail.com>
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Hi Jack, On Tue, May 3, 2011 at 6:00 PM, Jack Vogel <jfvogel@gmail.com> wrote: > It has nothing to do with load, it has to do with the prerequisites to in= it > your interfaces. > The amount you need is fixed, it doesn't vary with load. Every RX descrip= tor > needs one, > so its simple math, number-of-interfaces X number-of-queues X size of the > ring. > I guess the question is more: why would I need N*M (M > 1) nmbclusters with driver version X when driver version X-1 worked perfectly fine, from my daily-average-user point of view, with N nmbclusters ? A more rude version might be "Why the frak my network adapter stopped working with the default setting ?" :) - Arnaud > If you have other network interfaces beside Intel they also consume mbufs > remember. > > Jack > > > > On Tue, May 3, 2011 at 2:50 PM, Michael Schmiedgen <schmiedgen@gmx.net>wr= ote: > >> On 03.05.2011 23:24, Jack Vogel wrote: >> >>> If you get the setup receive structures fail, then increase the >>> nmbclusters. >>> >>> If you use standard MTU then what you need are mbufs, and standard size >>> clusters (2K). >>> Only when you use jumbo frames will you need larger. >>> >>> You must configure enough, its that simple. >>> >> >> I doubled the nmbclusters as well. But nothing happened. >> >> I have no load on this machine and nothing special >> configured. >> >> Thanks, >> =A0Michael >> > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org= " >
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