Date: Tue, 15 Oct 2002 23:05:27 -0700 From: Lars Eggert <larse@ISI.EDU> To: Petri Helenius <pete@he.iki.fi> Cc: Luigi Rizzo <rizzo@icir.org>, freebsd-net@FreeBSD.ORG Subject: Re: ENOBUFS Message-ID: <3DAD01A7.3020807@isi.edu> References: <065901c27495$56a94c40$8c2a40c1@PHE> <3DAC8FAD.30601@isi.edu> <068b01c2749f$32e7cf70$8c2a40c1@PHE> <20021015161055.A27443@carp.icir.org> <06c901c274d8$e5280b80$8c2a40c1@PHE>
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This is a cryptographically signed message in MIME format. --------------ms040303050100000105070307 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Petri Helenius wrote: >>how large are the packets and how fast is the box ? > > > Packets go out at an average size of 1024 bytes. The box is dual > P4 Xeon 2400/400 so I think it should qualify as "fast" ? I disabled > hyperthreading to figure out if it was causing problems. I seem to > be able to send packets at a rate in the 900Mbps when just sending > them out with a process. If I do similar sending on two interfaces at > same time, it tops out at 600Mbps. The 900Mbps are similar to what I see here on similar hardware. For your two-interface setup, are the 600Mbps aggregate send rate on both interfaces, or do you see 600Mbps per interface? In the latter case, is your CPU maxed out? Only one can be in the kernel under -stable, so the second one won't help much. With small packets like that, you may be interrupt-bound. (Until Luigi releases polling for em interfaces... :-) Lars -- Lars Eggert <larse@isi.edu> USC Information Sciences Institute --------------ms040303050100000105070307 Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJtjCC AzgwggKhoAMCAQICEGZFcrfMdPXPY3ZFhNAukQEwDQYJKoZIhvcNAQEEBQAwgdExCzAJBgNV BAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUgVG93bjEaMBgG A1UEChMRVGhhd3RlIENvbnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmljYXRpb24gU2Vydmlj ZXMgRGl2aXNpb24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBDQTErMCkG CSqGSIb3DQEJARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAeFw0wMDA4MzAwMDAw MDBaFw0wNDA4MjcyMzU5NTlaMIGSMQswCQYDVQQGEwJaQTEVMBMGA1UECBMMV2VzdGVybiBD YXBlMRIwEAYDVQQHEwlDYXBlIFRvd24xDzANBgNVBAoTBlRoYXd0ZTEdMBsGA1UECxMUQ2Vy 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