Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750772AbVJ1VuT (ORCPT ); Fri, 28 Oct 2005 17:50:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750773AbVJ1VuS (ORCPT ); Fri, 28 Oct 2005 17:50:18 -0400 Received: from smtp06.wanadoo.nl ([194.134.35.146]:42506 "EHLO smtp06.wanadoo.nl") by vger.kernel.org with ESMTP id S1750772AbVJ1VuR (ORCPT ); Fri, 28 Oct 2005 17:50:17 -0400 Message-ID: <43629D18.1050706@lazarenko.net> Date: Fri, 28 Oct 2005 23:50:16 +0200 From: Vladimir Lazarenko User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Claudio Scordino Cc: john stultz , kernelnewbies@nl.linux.org, linux-kernel@vger.kernel.org Subject: Re: Bug: timer going backward on a dual core References: <200510282109.42054.cloud.of.andor@gmail.com> <200510282227.36433.cloud.of.andor@gmail.com> <1130532212.27168.417.camel@cog.beaverton.ibm.com> <200510282339.16196.cloud.of.andor@gmail.com> In-Reply-To: <200510282339.16196.cloud.of.andor@gmail.com> Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg=sha1; boundary="------------ms090405090104030309090708" X-Spam-Score: 0.1 (/) X-Spam-Report: Spam detection software, running on the system "dinosaur.lazarenko.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: >>>>>We have a dual-core AMD64 with the new kernel 2.6.14 and the >>>>>timer goes backward... >>>>> >>>>> >>>>>CONFIGURATION: >>>>> >>>>>Kernel: 2.6.14 >>>>>Distribution: Gentoo Linux 2005.0 >>>>>Processor: Athlon 64 x2 4200+ (dual core) >>>>>Motherboard: Abit KN8 >>>>>Memory: 1GB PC3200 >>>>> >>>>> >>>>>PROBLEM: >>>>> >>>>>gettimeofday goes backward and returns values that are not monotonic, >>>>>giving values that are smaller than values returned before. >>>>> >>>>>The system has been tested with timer as PIT, PIT/TSC and PM and the >>>>>problem occurs with all the configurations. >>>>> >>>>>Here is the config file that we used for the PM configuration. >>>>> >>>>>Any suggestion ? >>>> >>>>Booting w/ idle=poll tends to work around this issue. You might check >>>>with your motherboard vendor for an updated BIOS that supports HPET or >>>>the ACPI PM timer. >>> >>>We already updated the BIOS with the latest version. >>> >>>Also the booting command idle=poll doesn't work. >> >>Hmm. Not sure then. Is this a new regression on the same hardware? > Yes, we tried with idle=poll and the problem occurred again. [...] Content analysis details: (0.1 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- 0.1 AWL AWL: From: address is in the auto white-list Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 6609 Lines: 129 This is a cryptographically signed message in MIME format. --------------ms090405090104030309090708 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit >>>>>We have a dual-core AMD64 with the new kernel 2.6.14 and the >>>>>timer goes backward... >>>>> >>>>> >>>>>CONFIGURATION: >>>>> >>>>>Kernel: 2.6.14 >>>>>Distribution: Gentoo Linux 2005.0 >>>>>Processor: Athlon 64 x2 4200+ (dual core) >>>>>Motherboard: Abit KN8 >>>>>Memory: 1GB PC3200 >>>>> >>>>> >>>>>PROBLEM: >>>>> >>>>>gettimeofday goes backward and returns values that are not monotonic, >>>>>giving values that are smaller than values returned before. >>>>> >>>>>The system has been tested with timer as PIT, PIT/TSC and PM and the >>>>>problem occurs with all the configurations. >>>>> >>>>>Here is the config file that we used for the PM configuration. >>>>> >>>>>Any suggestion ? >>>> >>>>Booting w/ idle=poll tends to work around this issue. You might check >>>>with your motherboard vendor for an updated BIOS that supports HPET or >>>>the ACPI PM timer. >>> >>>We already updated the BIOS with the latest version. >>> >>>Also the booting command idle=poll doesn't work. >> >>Hmm. Not sure then. Is this a new regression on the same hardware? > Yes, we tried with idle=poll and the problem occurred again. Very strange, idle=poll fixed it for us just fine. Configuration we use is as follows: Athlon 64 X2 3800+ Debian 32-bit Tyan K8E 4G PC3200 Vladimir --------------ms090405090104030309090708 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 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJ2zCC Az8wggKooAMCAQICAQ0wDQYJKoZIhvcNAQEFBQAwgdExCzAJBgNVBAYTAlpBMRUwEwYDVQQI EwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUgVG93bjEaMBgGA1UEChMRVGhhd3RlIENv bnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmljYXRpb24gU2VydmljZXMgRGl2aXNpb24xJDAi BgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBDQTErMCkGCSqGSIb3DQEJARYccGVy c29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAeFw0wMzA3MTcwMDAwMDBaFw0xMzA3MTYyMzU5 NTlaMGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBM dGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBDQTCBnzAN BgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAxKY8VXNV+065yplaHmjAdQRwnd/p/6Me7L3N9Vvy Gna9fww6YfK/Uc4B1OVQCjDXAmNaLIkVcI7dyfArhVqqP3FWy688Cwfn8R+RNiQqE88r1fOC dz0Dviv+uxg+B79AgAJk16emu59l0cUqVIUPSAR/p7bRPGEEQB5kGXJgt/sCAwEAAaOBlDCB kTASBgNVHRMBAf8ECDAGAQH/AgEAMEMGA1UdHwQ8MDowOKA2oDSGMmh0dHA6Ly9jcmwudGhh d3RlLmNvbS9UaGF3dGVQZXJzb25hbEZyZWVtYWlsQ0EuY3JsMAsGA1UdDwQEAwIBBjApBgNV HREEIjAgpB4wHDEaMBgGA1UEAxMRUHJpdmF0ZUxhYmVsMi0xMzgwDQYJKoZIhvcNAQEFBQAD gYEASIzRUIPqCy7MDaNmrGcPf6+svsIXoUOWlJ1/TCG4+DYfqi2fNi/A9BxQIJNwPP2t4WFi w9k6GX6EsZkbAMUaC4J0niVQlGLH2ydxVyWN3amcOY6MIE9lX5Xa9/eH1sYITq726jTlEBpb NU1341YheILcIRk13iSx0x1G/11fZU8wggNIMIICsaADAgECAgMPl0owDQYJKoZIhvcNAQEE BQAwYjELMAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0 ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA1 MTAwNDE4Mjk1NloXDTA2MTAwNDE4Mjk1NlowgZgxEjAQBgNVBAQTCUxhemFyZW5rbzERMA8G A1UEKhMIVmxhZGltaXIxGzAZBgNVBAMTElZsYWRpbWlyIExhemFyZW5rbzEhMB8GCSqGSIb3 DQEJARYSdmxhZEBsYXphcmVua28ubmV0MS8wLQYJKoZIhvcNAQkBFiB2bGFkaW1pci5sYXph cmVua29AbG9naWNhY21nLmNvbTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMhN 65wBwy12UD+rjqjhBDMm8/6sYE+YHQmJMgTb/Cxy+Sp00ISDel7/FiLvVtKAo667N43VeFzT p+7BWKxC0OJAFddayiWFw5sZCEL28qY2lHnolrpJMbVIzUoqrSkPjgZ9GNI93Ri7AWkMCF9X uRFW0I0Lbb2gYH2fnpdloO917DLyXVuBxOyPUpu1TeP+oHbi8whPdrhFx8Ep37sP13srk5tf ISzaXdJzEVWOaLTyIL5tMSlCuBJibmcDm9/2qCLW+c1eAxiQwmafH4tJ5WPch2wclEXlt7tw tGe6vK0Se2B8TvgZmOaY78wIp0DBVrP4+wsMnCbcPHtk+sY1d/8CAwEAAaNRME8wPwYDVR0R BDgwNoESdmxhZEBsYXphcmVua28ubmV0gSB2bGFkaW1pci5sYXphcmVua29AbG9naWNhY21n LmNvbTAMBgNVHRMBAf8EAjAAMA0GCSqGSIb3DQEBBAUAA4GBACfGbOm/RbyWFmOR+w4Vk8XY umCjlfqb+icqbKENKvuG4DOQr6QaTtRT+/ATA3yrooYfQWuflDIEPS+SbNyjfpNyyFiYB8OS rfclJ+B+ikvEP7LweNoL3EV1SrzeyJ3YrcqHAhoNqvB66dVQCy04RFvaRI+fC3I79Zd748gf ESqyMIIDSDCCArGgAwIBAgIDD5dKMA0GCSqGSIb3DQEBBAUAMGIxCzAJBgNVBAYTAlpBMSUw IwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUg UGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBDQTAeFw0wNTEwMDQxODI5NTZaFw0wNjEwMDQx ODI5NTZaMIGYMRIwEAYDVQQEEwlMYXphcmVua28xETAPBgNVBCoTCFZsYWRpbWlyMRswGQYD VQQDExJWbGFkaW1pciBMYXphcmVua28xITAfBgkqhkiG9w0BCQEWEnZsYWRAbGF6YXJlbmtv Lm5ldDEvMC0GCSqGSIb3DQEJARYgdmxhZGltaXIubGF6YXJlbmtvQGxvZ2ljYWNtZy5jb20w ggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDITeucAcMtdlA/q46o4QQzJvP+rGBP mB0JiTIE2/wscvkqdNCEg3pe/xYi71bSgKOuuzeN1Xhc06fuwVisQtDiQBXXWsolhcObGQhC 9vKmNpR56Ja6STG1SM1KKq0pD44GfRjSPd0YuwFpDAhfV7kRVtCNC229oGB9n56XZaDvdewy 8l1bgcTsj1KbtU3j/qB24vMIT3a4RcfBKd+7D9d7K5ObXyEs2l3ScxFVjmi08iC+bTEpQrgS Ym5nA5vf9qgi1vnNXgMYkMJmnx+LSeVj3IdsHJRF5be7cLRnurytEntgfE74GZjmmO/MCKdA wVaz+PsLDJwm3Dx7ZPrGNXf/AgMBAAGjUTBPMD8GA1UdEQQ4MDaBEnZsYWRAbGF6YXJlbmtv Lm5ldIEgdmxhZGltaXIubGF6YXJlbmtvQGxvZ2ljYWNtZy5jb20wDAYDVR0TAQH/BAIwADAN BgkqhkiG9w0BAQQFAAOBgQAnxmzpv0W8lhZjkfsOFZPF2Lpgo5X6m/onKmyhDSr7huAzkK+k Gk7UU/vwEwN8q6KGH0Frn5QyBD0vkmzco36TcshYmAfDkq33JSfgfopLxD+y8HjaC9xFdUq8 3sid2K3KhwIaDarweunVUAstOERb2kSPnwtyO/WXe+PIHxEqsjGCAzswggM3AgEBMGkwYjEL MAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAq BgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBAgMPl0owCQYFKw4D AhoFAKCCAacwGAYJKoZIhvcNAQkDMQsGCSqGSIb3DQEHATAcBgkqhkiG9w0BCQUxDxcNMDUx MDI4MjE1MDE2WjAjBgkqhkiG9w0BCQQxFgQUqJGaWDKQg4MDzgFboLTo+m3aimswUgYJKoZI hvcNAQkPMUUwQzAKBggqhkiG9w0DBzAOBggqhkiG9w0DAgICAIAwDQYIKoZIhvcNAwICAUAw BwYFKw4DAgcwDQYIKoZIhvcNAwICASgweAYJKwYBBAGCNxAEMWswaTBiMQswCQYDVQQGEwJa QTElMCMGA1UEChMcVGhhd3RlIENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhh d3RlIFBlcnNvbmFsIEZyZWVtYWlsIElzc3VpbmcgQ0ECAw+XSjB6BgsqhkiG9w0BCRACCzFr oGkwYjELMAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0 ZC4xLDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBAgMPl0ow DQYJKoZIhvcNAQEBBQAEggEAnzsGuZQK8QzUBfKnLFD29EVE33NoHtCBxJVe+N9s0fF5ryvn wqv+0wX2VHOVbTAICG5p7Nbg3oPrgVF2gFVYDyjr9/u4VFgIdKuMsHFETY187FP0JOQrRJQV fLwSQXl96y2D97tl8Pqp98w7InO6LjXHwMPm/rRiDb9480Nuuy1S/Lxc23Tmxje2NiFcOheC yyV0Fawq6nAorWK5pkeNPwBoHB96oMbFRuGeWDtgX2FN/B1s2YqsmldEfosrZ3wnqJFOfBW/ LASZJz9ha6FV8KMtLb+/klCz4fV7KVsV9d3CPzKuv/xl1Ino0GWEsKM7MlBJxsiy18m2tf9P ra0fUwAAAAAAAA== --------------ms090405090104030309090708-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/