Date: Tue, 18 Jul 2006 16:54:50 +0100 From: Deomid Ryabkov <myself@rojer.pp.ru> To: Gareth McCaughan <gmccaughan@synaptics-uk.com> Cc: freebsd-hackers@freebsd.org Subject: Re: "swiN: clock sio" process taking 75% CPU Message-ID: <44BD044A.4090509@rojer.pp.ru> In-Reply-To: <200607181317.33416.gmccaughan@synaptics-uk.com> References: <200607181317.33416.gmccaughan@synaptics-uk.com>
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This is a cryptographically signed message in MIME format. --------------ms020607010803030402000309 Content-Type: text/plain; charset=KOI8-R; format=flowed Content-Transfer-Encoding: 7bit Gareth McCaughan wrote: > About 6 minutes after booting (on three occasions, but I > don't guarantee this doesn't vary), a process (well, a > kernel interrupt thread, I guess) that appears in the > output of "ps" as "[swi4: clock sio]" begins to use > about 3/4 of the machine's CPU. I recall seeing similar behavior on a Sun V20z, running 5.x at the time. I have definitely seen a lot of interrupts and CPU usage on the sio interrupt corresponding to serial console. Needless to say there was no activity on the console itself. I think turning off serial console solved that for me. -- Deomid Ryabkov aka Rojer myself@rojer.pp.ru rojer@sysadmins.ru ICQ: 8025844 --------------ms020607010803030402000309 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 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIJPTCC AvkwggJioAMCAQICEA6d3TvG5eRen2BAM1uAkm0wDQYJKoZIhvcNAQEEBQAwYjELMAkGA1UE BhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4xLDAqBgNVBAMT I1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA2MDQwMTE4MjY1NFoX DTA3MDQwMTE4MjY1NFowXzEQMA4GA1UEBBMHUnlhYmtvdjEPMA0GA1UEKhMGRGVvbWlkMRcw FQYDVQQDEw5EZW9taWQgUnlhYmtvdjEhMB8GCSqGSIb3DQEJARYSbXlzZWxmQHJvamVyLnBw LnJ1MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmnOKvalRf0lrl/4S2fAVovyt 2FxjDn8hDhSOeYNY97Ddi8Y2t+eELg7cpxAUq9GnymPBQanGlvUN2VTuSA4YUVg+VE1yhGgE TDKm0CNVh0v5LOVVAs52IFvdQ0wREYRH0nPBa/ovPWVvlsJ/cIR5GhvRfAW3FbvuP+bEYU54 ESo7OTu7EeGVOLBTF5ow1zaU9PStIied3ffaK5xl8lB6TnQ7DBnIir0ugCqdAuaVxsjD4SfG hqzv42uOuvNjFCQhtFn9dUSnx1cF1TI39cumqVV4UNrqDlQZ4bgrBu/ClqSI4oJnfxgafNkq oSVx7mXNuD1U7V8tJRbOiNdZFpS6mwIDAQABoy8wLTAdBgNVHREEFjAUgRJteXNlbGZAcm9q ZXIucHAucnUwDAYDVR0TAQH/BAIwADANBgkqhkiG9w0BAQQFAAOBgQAmvjeaZmSMwreI1RIl M1frBBOatokRhsStY6nyswNwxpCCcMGiK6sS8a0rtE4Iowvm48oCfXG062anUAFUMJ+e6Fse uOE1lJKrFQRJWGUzp61BOZJH8HZfKnrb7ll2GXY7YvvBicmif/wdjEBgp0WwNucm6jJS/57f mY3M9LQbwzCCAvkwggJioAMCAQICEA6d3TvG5eRen2BAM1uAkm0wDQYJKoZIhvcNAQEEBQAw YjELMAkGA1UEBhMCWkExJTAjBgNVBAoTHFRoYXd0ZSBDb25zdWx0aW5nIChQdHkpIEx0ZC4x LDAqBgNVBAMTI1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBJc3N1aW5nIENBMB4XDTA2MDQw MTE4MjY1NFoXDTA3MDQwMTE4MjY1NFowXzEQMA4GA1UEBBMHUnlhYmtvdjEPMA0GA1UEKhMG RGVvbWlkMRcwFQYDVQQDEw5EZW9taWQgUnlhYmtvdjEhMB8GCSqGSIb3DQEJARYSbXlzZWxm QHJvamVyLnBwLnJ1MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmnOKvalRf0lr l/4S2fAVovyt2FxjDn8hDhSOeYNY97Ddi8Y2t+eELg7cpxAUq9GnymPBQanGlvUN2VTuSA4Y UVg+VE1yhGgETDKm0CNVh0v5LOVVAs52IFvdQ0wREYRH0nPBa/ovPWVvlsJ/cIR5GhvRfAW3 FbvuP+bEYU54ESo7OTu7EeGVOLBTF5ow1zaU9PStIied3ffaK5xl8lB6TnQ7DBnIir0ugCqd AuaVxsjD4SfGhqzv42uOuvNjFCQhtFn9dUSnx1cF1TI39cumqVV4UNrqDlQZ4bgrBu/ClqSI 4oJnfxgafNkqoSVx7mXNuD1U7V8tJRbOiNdZFpS6mwIDAQABoy8wLTAdBgNVHREEFjAUgRJt eXNlbGZAcm9qZXIucHAucnUwDAYDVR0TAQH/BAIwADANBgkqhkiG9w0BAQQFAAOBgQAmvjea ZmSMwreI1RIlM1frBBOatokRhsStY6nyswNwxpCCcMGiK6sS8a0rtE4Iowvm48oCfXG062an UAFUMJ+e6FseuOE1lJKrFQRJWGUzp61BOZJH8HZfKnrb7ll2GXY7YvvBicmif/wdjEBgp0Ww Nucm6jJS/57fmY3M9LQbwzCCAz8wggKooAMCAQICAQ0wDQYJKoZIhvcNAQEFBQAwgdExCzAJ BgNVBAYTAlpBMRUwEwYDVQQIEwxXZXN0ZXJuIENhcGUxEjAQBgNVBAcTCUNhcGUgVG93bjEa MBgGA1UEChMRVGhhd3RlIENvbnN1bHRpbmcxKDAmBgNVBAsTH0NlcnRpZmljYXRpb24gU2Vy dmljZXMgRGl2aXNpb24xJDAiBgNVBAMTG1RoYXd0ZSBQZXJzb25hbCBGcmVlbWFpbCBDQTEr MCkGCSqGSIb3DQEJARYccGVyc29uYWwtZnJlZW1haWxAdGhhd3RlLmNvbTAeFw0wMzA3MTcw MDAwMDBaFw0xMzA3MTYyMzU5NTlaMGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUg Q29uc3VsdGluZyAoUHR5KSBMdGQuMSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1h aWwgSXNzdWluZyBDQTCBnzANBgkqhkiG9w0BAQEFAAOBjQAwgYkCgYEAxKY8VXNV+065ypla HmjAdQRwnd/p/6Me7L3N9VvyGna9fww6YfK/Uc4B1OVQCjDXAmNaLIkVcI7dyfArhVqqP3FW y688Cwfn8R+RNiQqE88r1fOCdz0Dviv+uxg+B79AgAJk16emu59l0cUqVIUPSAR/p7bRPGEE QB5kGXJgt/sCAwEAAaOBlDCBkTASBgNVHRMBAf8ECDAGAQH/AgEAMEMGA1UdHwQ8MDowOKA2 oDSGMmh0dHA6Ly9jcmwudGhhd3RlLmNvbS9UaGF3dGVQZXJzb25hbEZyZWVtYWlsQ0EuY3Js MAsGA1UdDwQEAwIBBjApBgNVHREEIjAgpB4wHDEaMBgGA1UEAxMRUHJpdmF0ZUxhYmVsMi0x MzgwDQYJKoZIhvcNAQEFBQADgYEASIzRUIPqCy7MDaNmrGcPf6+svsIXoUOWlJ1/TCG4+DYf qi2fNi/A9BxQIJNwPP2t4WFiw9k6GX6EsZkbAMUaC4J0niVQlGLH2ydxVyWN3amcOY6MIE9l X5Xa9/eH1sYITq726jTlEBpbNU1341YheILcIRk13iSx0x1G/11fZU8xggNkMIIDYAIBATB2 MGIxCzAJBgNVBAYTAlpBMSUwIwYDVQQKExxUaGF3dGUgQ29uc3VsdGluZyAoUHR5KSBMdGQu MSwwKgYDVQQDEyNUaGF3dGUgUGVyc29uYWwgRnJlZW1haWwgSXNzdWluZyBDQQIQDp3dO8bl 5F6fYEAzW4CSbTAJBgUrDgMCGgUAoIIBwzAYBgkqhkiG9w0BCQMxCwYJKoZIhvcNAQcBMBwG CSqGSIb3DQEJBTEPFw0wNjA3MTgxNTU0NTBaMCMGCSqGSIb3DQEJBDEWBBQKIN9XMm1vNUQl C2G1iDvaQ9lguTBSBgkqhkiG9w0BCQ8xRTBDMAoGCCqGSIb3DQMHMA4GCCqGSIb3DQMCAgIA gDANBggqhkiG9w0DAgIBQDAHBgUrDgMCBzANBggqhkiG9w0DAgIBKDCBhQYJKwYBBAGCNxAE MXgwdjBiMQswCQYDVQQGEwJaQTElMCMGA1UEChMcVGhhd3RlIENvbnN1bHRpbmcgKFB0eSkg THRkLjEsMCoGA1UEAxMjVGhhd3RlIFBlcnNvbmFsIEZyZWVtYWlsIElzc3VpbmcgQ0ECEA6d 3TvG5eRen2BAM1uAkm0wgYcGCyqGSIb3DQEJEAILMXigdjBiMQswCQYDVQQGEwJaQTElMCMG A1UEChMcVGhhd3RlIENvbnN1bHRpbmcgKFB0eSkgTHRkLjEsMCoGA1UEAxMjVGhhd3RlIFBl cnNvbmFsIEZyZWVtYWlsIElzc3VpbmcgQ0ECEA6d3TvG5eRen2BAM1uAkm0wDQYJKoZIhvcN AQEBBQAEggEANxtXJ1P1Mfw7Ka0q6xyPeL+m0uzYAg2qwgfJEQ1+FUyiz6wDp32eilKebCY0 Tsl7oOnS6dSCH2HLiIhD/2i7sV1nUO9ns5F8aX0uN8anY4Hb3alzPWlDMESjrQwPTj9ZJW/w t2/sccTzoX9wdVYmsliQ3tmdih3wnHSUgwAoeISUzr5EKp2kjKIffsLyV0RGVpU3ZTV+6Q1B 9SwI3KTGvWUkvsJOs18R4BLRUQvGwnJgllT3Wkrq2zjVioNtjLCVY/KwNI/PGM6DoEZxRfoh jddkXGsl+8wKZx9TqUQwQ2OX8fzDI6sT/rdCW3jU+V4TsN/d0NLhLb+xpEGO/hzzRAAAAAAA AA== --------------ms020607010803030402000309--
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