Date: Tue, 25 Mar 2014 07:09:07 -0500 From: Karl Denninger <karl@denninger.net> To: John <john@theusgroup.com>, mikej <mikej@mikej.com> Cc: freebsd-fs@freebsd.org Subject: Re: kern/187594: [zfs] [patch] ZFS ARC behavior problem and fix [SB QUAR: Fri Mar 21 16:01:12 2014] Message-ID: <533171E3.7060000@denninger.net> In-Reply-To: <20140325081023.99DA9131@server.theusgroup.com> References: <201403201710.s2KHA0e9043051@freefall.freebsd.org> <31e2f5092048c128add6f4cd3d136f4d@mail.mikej.com> <532CD3BC.5020305@denninger.net> <b389a3b124e16432b446d73e794e9c86@mail.mikej.com> <53304D8D.7080107@denninger.net> <c42f6df8791cac4479d9e49a20c150be@mail.mikej.com> <20140325081023.99DA9131@server.theusgroup.com>
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This is a cryptographically signed message in MIME format. --------------ms080300090308000004050400 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable On 3/25/2014 3:10 AM, John wrote: >> Karl, >> >> I don't know why the PR system doesn't allow multiple attachments for >> patches >> to be sent so they can easily be downloaded. I continue to be >> unsuccessful >> at getting patches out of email that don't have line wrap are tab >> issues. So, >> again if you could send a link or post the latest patch I would be gla= d >> to let >> it churn. >> >> If I need an education about the PR system, please someone help me. > I've had to hand edit every patch due to the extra stuff added in the e= mail > from mime encoding and the PR system stripping all leading white space = from > the patches that show up there. > > That said, I've been applying the patches to 9.2. The previous patch wa= s a > big improvement under my workload. It's too early to tell about the lat= est > patch, but its applied to 9.2 after I upgraded to the new zfs features,= r263423. > > The machine has 24 GB of ram and prior to the patches it had vfs.zfs.ar= c_max > tuned to 14 GB to keep from swapping. With the patch I've raise arc_max= to > 16 GB (I'll raise it higher after more testing), and arc management see= ms to > be working well. > > John Theus > TheusGroup.com > You can remove the arc_max tuning entirely, since the latest patch=20 allows you to set the low-RAM warning level either in pages, percentage=20 of RAM or both at runtime (making pre-setting the arc_max level=20 unnecessary.) --=20 -- Karl karl@denninger.net --------------ms080300090308000004050400 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIFTzCC BUswggQzoAMCAQICAQgwDQYJKoZIhvcNAQEFBQAwgZ0xCzAJBgNVBAYTAlVTMRAwDgYDVQQI EwdGbG9yaWRhMRIwEAYDVQQHEwlOaWNldmlsbGUxGTAXBgNVBAoTEEN1ZGEgU3lzdGVtcyBM TEMxHDAaBgNVBAMTE0N1ZGEgU3lzdGVtcyBMTEMgQ0ExLzAtBgkqhkiG9w0BCQEWIGN1c3Rv bWVyLXNlcnZpY2VAY3VkYXN5c3RlbXMubmV0MB4XDTEzMDgyNDE5MDM0NFoXDTE4MDgyMzE5 MDM0NFowWzELMAkGA1UEBhMCVVMxEDAOBgNVBAgTB0Zsb3JpZGExFzAVBgNVBAMTDkthcmwg RGVubmluZ2VyMSEwHwYJKoZIhvcNAQkBFhJrYXJsQGRlbm5pbmdlci5uZXQwggIiMA0GCSqG SIb3DQEBAQUAA4ICDwAwggIKAoICAQC5n2KBrBmG22nVntVdvgKCB9UcnapNThrW1L+dq6th d9l4mj+qYMUpJ+8I0rTbY1dn21IXQBoBQmy8t1doKwmTdQ59F0FwZEPt/fGbRgBKVt3Quf6W 6n7kRk9MG6gdD7V9vPpFV41e+5MWYtqGWY3ScDP8SyYLjL/Xgr+5KFKkDfuubK8DeNqdLniV jHo/vqmIgO+6NgzPGPgmbutzFQXlxUqjiNAAKzF2+Tkddi+WKABrcc/EqnBb0X8GdqcIamO5 SyVmuM+7Zdns7D9pcV16zMMQ8LfNFQCDvbCuuQKMDg2F22x5ekYXpwjqTyfjcHBkWC8vFNoY 5aFMdyiN/Kkz0/kduP2ekYOgkRqcShfLEcG9SQ4LQZgqjMpTjSOGzBr3tOvVn5LkSJSHW2Z8 Q0dxSkvFG2/lsOWFbwQeeZSaBi5vRZCYCOf5tRd1+E93FyQfpt4vsrXshIAk7IK7f0qXvxP4 GDli5PKIEubD2Bn+gp3vB/DkfKySh5NBHVB+OPCoXRUWBkQxme65wBO02OZZt0k8Iq0i4Rci WV6z+lQHqDKtaVGgMsHn6PoeYhjf5Al5SP+U3imTjF2aCca1iDB5JOccX04MNljvifXgcbJN nkMgrzmm1ZgJ1PLur/ADWPlnz45quOhHg1TfUCLfI/DzgG7Z6u+oy4siQuFr9QT0MQIDAQAB o4HWMIHTMAkGA1UdEwQCMAAwEQYJYIZIAYb4QgEBBAQDAgWgMAsGA1UdDwQEAwIF4DAsBglg hkgBhvhCAQ0EHxYdT3BlblNTTCBHZW5lcmF0ZWQgQ2VydGlmaWNhdGUwHQYDVR0OBBYEFHw4 +LnuALyLA5Cgy7T5ZAX1WzKPMB8GA1UdIwQYMBaAFF3U3hpBZq40HB5VM7B44/gmXiI0MDgG CWCGSAGG+EIBAwQrFilodHRwczovL2N1ZGFzeXN0ZW1zLm5ldDoxMTQ0My9yZXZva2VkLmNy bDANBgkqhkiG9w0BAQUFAAOCAQEAZ0L4tQbBd0hd4wuw/YVqEBDDXJ54q2AoqQAmsOlnoxLO 31ehM/LvrTIP4yK2u1VmXtUumQ4Ao15JFM+xmwqtEGsh70RRrfVBAGd7KOZ3GB39FP2TgN/c L5fJKVxOqvEnW6cL9QtvUlcM3hXg8kDv60OB+LIcSE/P3/s+0tEpWPjxm3LHVE7JmPbZIcJ1 YMoZvHh0NSjY5D0HZlwtbDO7pDz9sZf1QEOgjH828fhtborkaHaUI46pmrMjiBnY6ujXMcWD pxtikki0zY22nrxfTs5xDWGxyrc/cmucjxClJF6+OYVUSaZhiiHfa9Pr+41okLgsRB0AmNwE f6ItY3TI8DGCBQowggUGAgEBMIGjMIGdMQswCQYDVQQGEwJVUzEQMA4GA1UECBMHRmxvcmlk YTESMBAGA1UEBxMJTmljZXZpbGxlMRkwFwYDVQQKExBDdWRhIFN5c3RlbXMgTExDMRwwGgYD VQQDExNDdWRhIFN5c3RlbXMgTExDIENBMS8wLQYJKoZIhvcNAQkBFiBjdXN0b21lci1zZXJ2 aWNlQGN1ZGFzeXN0ZW1zLm5ldAIBCDAJBgUrDgMCGgUAoIICOzAYBgkqhkiG9w0BCQMxCwYJ KoZIhvcNAQcBMBwGCSqGSIb3DQEJBTEPFw0xNDAzMjUxMjA5MDdaMCMGCSqGSIb3DQEJBDEW BBRmTjuUzDYnPgdbDjHRbedO4FVguzBsBgkqhkiG9w0BCQ8xXzBdMAsGCWCGSAFlAwQBKjAL BglghkgBZQMEAQIwCgYIKoZIhvcNAwcwDgYIKoZIhvcNAwICAgCAMA0GCCqGSIb3DQMCAgFA MAcGBSsOAwIHMA0GCCqGSIb3DQMCAgEoMIG0BgkrBgEEAYI3EAQxgaYwgaMwgZ0xCzAJBgNV BAYTAlVTMRAwDgYDVQQIEwdGbG9yaWRhMRIwEAYDVQQHEwlOaWNldmlsbGUxGTAXBgNVBAoT EEN1ZGEgU3lzdGVtcyBMTEMxHDAaBgNVBAMTE0N1ZGEgU3lzdGVtcyBMTEMgQ0ExLzAtBgkq hkiG9w0BCQEWIGN1c3RvbWVyLXNlcnZpY2VAY3VkYXN5c3RlbXMubmV0AgEIMIG2BgsqhkiG 9w0BCRACCzGBpqCBozCBnTELMAkGA1UEBhMCVVMxEDAOBgNVBAgTB0Zsb3JpZGExEjAQBgNV BAcTCU5pY2V2aWxsZTEZMBcGA1UEChMQQ3VkYSBTeXN0ZW1zIExMQzEcMBoGA1UEAxMTQ3Vk YSBTeXN0ZW1zIExMQyBDQTEvMC0GCSqGSIb3DQEJARYgY3VzdG9tZXItc2VydmljZUBjdWRh c3lzdGVtcy5uZXQCAQgwDQYJKoZIhvcNAQEBBQAEggIAiIQEbmb2lX6MpFqmqr6rX5gPssHM C+4UxDLKTMLdHBn9RocvYuFD1/Bp2UskTQZ2LPfJ8li4mt7H029WbY4lCDqpHdGaJauxKqe4 4DDqk3ycgUuhmLM6brwr1BD61TpK0WLQ1zyR9iUOrBSZH6yMigGV/8yMNikAHb8u8gaW/A4D vTLgMQreBiigJ2HMerxYm+bhu3oN9SWb9Mq7D5llnTx9TxaB3p/lVuWchPCJgKN/qCsv9kgI S1ydYxb8xXvxtWnPpyOCDHbIZesJ9ERRoyKPAR+v85SrygyorBCuJ2vjyRww3kXRSf0BztlB 2WsEO8OirQsR5ceXi77pq86Ovm83KDM5FY1Z8EmlPo1WykLe7SXpLarkhg7j4aaayfQPToob 6UH4ZQos4i2A0IjCpBI/hJiUFP58Wh6zYXreMw/TAjwNEvXx97W4vwqnMRhakuKAyG47ld8t coayhUoGTix/SR+BSieT23ToCDdyn79Jijg4ntBygL2afL8sF0Ew70FJsRXV+5MomKjV5zSG Qga8fQXPZqRcOpd4nGuWz8x1QbECXWELYKO2L3wiU2FuNARhZgDzxsRSEwYiFaFKY3JjpDlT 9htaDLyctEB7c3si0+QJCJfwSZVRWjUQCmLSymFWjQ28DKrv0NKjgiWEU/5y5k4bsCq0OVWI QWpcMZ4AAAAAAAA= --------------ms080300090308000004050400--
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