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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Very strange, shouldn’t take that long, you may try increase the value of maintenance_work_mem in postgres.conf, to speed up COPY<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>For instance:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'> maintenance_work_mem = 1024MB<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> slony1-general-bounces@lists.slony.info [mailto:slony1-general-bounces@lists.slony.info] <b>On Behalf Of </b>Tory M Blue<br><b>Sent:</b> Thursday, January 02, 2014 2:35 PM<br><b>To:</b> slony1-general<br><b>Subject:</b> [Slony1-general] 6 hours to replicate single table, 12 hours to replicate DB<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>Wondering what settings I need to speed this up. To do a rebuild of a db it takes a long time, 6 hours for a singe table. No I/O issues, no load, just slon postgres taking their sweet old time. I would like to use the resources available to speed this up.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>The table is<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal>2013-12-21 19:17:58 PST CONFIG remoteWorkerThread_1: Begin COPY of table "impressions"<o:p></o:p></p></div><div><p class=MsoNormal>2013-12-21 19:37:03 PST CONFIG remoteWorkerThread_1: 12657163552 bytes copied for table ”impressions” <o:p></o:p></p></div><div><p class=MsoNormal>2013-12-22 01:40:22 PST CONFIG remoteWorkerThread_1: 22944.144 seconds to copy table ”impressions” <— 6 hours<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Postgres 9.2.4 slony 2.1.3<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>This is a larger table, but because of bloat etc, we need to do ground ups to clean it out every so often (Vacuums don't do it).<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Slony config , pretty much at default other than sync interval.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><div><p class=MsoNormal># Check for updates at least this often in milliseconds.<o:p></o:p></p></div><div><p class=MsoNormal># Range: [10-60000], default 2000<o:p></o:p></p></div><div><p class=MsoNormal>sync_interval=1000<o:p></o:p></p></div><div><p class=MsoNormal>#sync_interval_timeout=10000<o:p></o:p></p></div><div><div><p class=MsoNormal># apply every single SYNC by itself.<o:p></o:p></p></div><div><p class=MsoNormal># Range: [0,100], default: 6<o:p></o:p></p></div><div><p class=MsoNormal>#sync_group_maxsize=6<o:p></o:p></p></div><div><p class=MsoNormal>#sync_max_rowsize=8192<o:p></o:p></p></div><div><p class=MsoNormal>#sync_max_largemem=5242880<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I either need some advanced settings for when we are doing a rebuild, to speed up the process, or I need to do some configurations that stay during normal workloads as well. But normal workloads things are replicated and keep in sync, it's just the rebuild portion. I would like to see it actually stressing my boxen :)<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Thanks<o:p></o:p></p></div><div><p class=MsoNormal>Tory<o:p></o:p></p></div></div></div></div></div></div></body></html>