Date: Tue, 16 Oct 2007 12:26:43 +0400 From: Vladimir Ivanov <wawa@yandex-team.ru> To: Karl Triebes <karl.triebes@gmail.com>, freebsd-net <freebsd-net@freebsd.org> Subject: Re: SMPable version of EM driver Message-ID: <471475C3.9000702@yandex-team.ru> In-Reply-To: <26a198490710142105g8fe59c2o86ceaa10d82c3c47@mail.gmail.com> References: <46B07931.3080300@yandex-team.ru> <55e8a96c0708010626x7a433c21hacc124c7c70af471@mail.gmail.com> <46B09802.7080908@yandex-team.ru> <pvcjg3hl7flhaeoogjtot8qoj989udg7nc@4ax.com> <4712405B.1080808@yandex-team.ru> <26a198490710142105g8fe59c2o86ceaa10d82c3c47@mail.gmail.com>
next in thread | previous in thread | raw e-mail | index | archive | help
This is a cryptographically signed message in MIME format. --------------ms090401080000060904060000 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Karl Triebes wrote: > Vladamir, > interesting work. Do you have performance numbers with each of your > changes to see how much each contributed? How does this method scale > with cpu cores. With your multiple RX thread idea, do you think there > will a lot of cache thrashing due to fact that now > 1 core is looking > at RX from the same device? > DMA activity is a main problem for cache. They have about zero cache hit rate even w/one CPU core I seem. > Thanks, > > Karl. > > [skip] WBR, -- Vladimir Ivanov Network Operations Center OOO "Yandex" t: +7 495 739-7000 f: +7 495 739-7070 @: noc@yandex.net (corporate) wawa@yandex-team.ru (personal) www: www.yandex.ru -- --------------ms090401080000060904060000 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 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIGJzCC AuAwggJJoAMCAQICEA2B08GbcpEEl6Da/kpOht8wDQYJKoZIhvcNAQEFBQAwYjELMAkGA1UE BhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMT I1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA3MDcwNDE1MTM0NVoX DTA4MDcwMzE1MTM0NVowRTEfMB0GA1UEAxMWVGhhd3RlIEZyZWVtYWlsIE1lbWJlcjEiMCAG CSqGSIb3DQEJARYTd2F3YUB5YW5kZXgtdGVhbS5ydTCCASIwDQYJKoZIhvcNAQEBBQADggEP ADCCAQoCggEBANuooNgTWqT0D35N7rdbZAAje8iyZcELUHy3Dgh6Pymm+s7RIeP8EoxTnn1o YQMFkZdthNT/j+MXl61O0zBshti+34/9m0rQzntCHDboJf9yTeA0bOqL43EdnEMlUWTEaf00 dcOySQ3fpTKiiQKqFASI1MUPDCfQQuu6ansTCpddG8fOu+zaE570aH6hoy/NRGhH8SCbcARY QxjjiddCUknclX2gz4ak+wVB4IapHNSdtRG3APj5GZY9VK7sAwjOqodcNwbQEG/Gj6j99fU3 7GYAL+x3bz9wve9YGEJ7TUPLpd582tZtiiakqurnluId4Ix1B/HSyAZnPAr5WYJZrwcCAwEA AaMwMC4wHgYDVR0RBBcwFYETd2F3YUB5YW5kZXgtdGVhbS5ydTAMBgNVHRMBAf8EAjAAMA0G CSqGSIb3DQEBBQUAA4GBABzUVmJvH3Cr++WFtTFVewG2cLZo3geMNRuT+wIPULXt59LPuSg7 ZnK04wXNC2Am5UKilWxvDS6gs6pW2ZIDHw8YttQzej7z7+Scujr9uyfxMcTxHfk826UAdadz eKYGHEvb41wokW/lZR6fMLqRzfjHLDTZM46GiXQFVSMtqCT0MIIDPzCCAqigAwIBAgIBDTAN BgkqhkiG9w0BAQUFADCB0TELMAkGA1UEBhMCWkExFTATBgNVBAgTDFdlc3Rlcm4gQ2FwZTES MBAGA1UEBxMJQ2FwZSBUb3duMRowGAYDVQQKExFUaGF3dGUgQ29uc3VsdGluZzEoMCYGA1UE CxMfQ2VydGlmaWNhdGlvbiBTZXJ2aWNlcyBEaXZpc2lvbjEkMCIGA1UEAxMbVGhhd3RlIFBl cnNvbmFsIEZyZWVtYWlsIENBMSswKQYJKoZIhvcNAQkBFhxwZXJzb25hbC1mcmVlbWFpbEB0 aGF3dGUuY29tMB4XDTAzMDcxNzAwMDAwMFoXDTEzMDcxNjIzNTk1OVowYjELMAkGA1UEBhMC WkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1Ro YXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMIGfMA0GCSqGSIb3DQEBAQUAA4GN ADCBiQKBgQDEpjxVc1X7TrnKmVoeaMB1BHCd3+n/ox7svc31W/Iadr1/DDph8r9RzgHU5VAK MNcCY1osiRVwjt3J8CuFWqo/cVbLrzwLB+fxH5E2JCoTzyvV84J3PQO+K/67GD4Hv0CAAmTX p6a7n2XRxSpUhQ9IBH+nttE8YQRAHmQZcmC3+wIDAQABo4GUMIGRMBIGA1UdEwEB/wQIMAYB Af8CAQAwQwYDVR0fBDwwOjA4oDagNIYyaHR0cDovL2NybC50aGF3dGUuY29tL1RoYXd0ZVBl cnNvbmFsRnJlZW1haWxDQS5jcmwwCwYDVR0PBAQDAgEGMCkGA1UdEQQiMCCkHjAcMRowGAYD VQQDExFQcml2YXRlTGFiZWwyLTEzODANBgkqhkiG9w0BAQUFAAOBgQBIjNFQg+oLLswNo2as Zw9/r6y+whehQ5aUnX9MIbj4Nh+qLZ82L8D0HFAgk3A8/a3hYWLD2ToZfoSxmRsAxRoLgnSe JVCUYsfbJ3FXJY3dqZw5jowgT2Vfldr394fWxghOrvbqNOUQGls1TXfjViF4gtwhGTXeJLHT HUb/XV9lTzGCAlEwggJNAgEBMHYwYjELMAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBD b25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFp bCBJc3N1aW5nIENBAhANgdPBm3KRBJeg2v5KTobfMAkGBSsOAwIaBQCggbEwGAYJKoZIhvcN AQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMDcxMDE2MDgyNjQzWjAjBgkqhkiG 9w0BCQQxFgQUxjoh5G1hJRZ++OkRZDG9nn7VmEcwUgYJKoZIhvcNAQkPMUUwQzAKBggqhkiG 9w0DBzAOBggqhkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAwBwYFKw4DAgcwDQYIKoZIhvcN AwICASgwDQYJKoZIhvcNAQEBBQAEggEAdqk6a7dr834JF8h/CcZbU+7r4P6FBOCaClFnZl/v LnKNvCyFAqIwfANBxI3CA3ioNVwNbCSuCBHgsXkF3ScBBOI/crB8wbpEQ5ANEbpJnZNbTGrS etyMdLFPhZlLiCGXmDkGWeYzRFHjVbS7h2OcaMyd3+GmTWnTQey8sFLfgM77U+xZ9TQ1yFOZ L7wxplMb1s+B82PyM9RRGaLhtBXKctbPk9swoHQgcu7oAdsrwLAczWSt0A4ISP/V4VJPnHS9 Hh20QpZACYQulLKS/4G2cx4P/t8gEKbRXUuHSSjIKmgxRHc5LULa78A/GSDe0WdQ5Ch7K38B dM1UJodoPWGnfQAAAAAAAA== --------------ms090401080000060904060000--
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?471475C3.9000702>