When was the last time you patched? There were lots ones recently. Only other thing I could suggest at present is check the DB for unusual activity....table locks etc.
-----Original Message----- From: Chris Norloff [mailto:[EMAIL PROTECTED] Sent: 18 May 2005 14:52 To: CF-Talk Subject: RE: CFMX GC every 60 sec.? CFMX 6.1 with updater, in server mode, on Solaris 8. Have added a couple hot fixes that apply to us. Using Apache(IBM HTTPD Server) and Oracle database. thanks, Chris ---------- Original Message ---------------------------------- From: "Robertson-Ravo, Neil (RX)" <[EMAIL PROTECTED]> Reply-To: [email protected] Date: Wed, 18 May 2005 14:13:57 +0100 >Is this MX 6.1? Are you on SQL Server? IIS? > >Is the CF Server fully patched? > >N > > > > >-----Original Message----- >From: Chris Norloff [mailto:[EMAIL PROTECTED] >Sent: 18 May 2005 14:11 >To: CF-Talk >Subject: RE: CFMX GC every 60 sec.? > >Thanks. This server has 1.5GB of memory, so I can set the heap larger as >needed. The funny thing is that tools keep showing plenty of memory >available ( % of Free Allocated Memory: 80-98%), but the Full Garbage >Collection happens so often it just seems wrong. > >And the JVM allocates more memory where it's not needed (PSOldGen) and >allocates less memory where it is needed (PSYoungGen). > >I'm going through a number of articles and blogs looking for info, and was >hoping someone here could put their finger on the answer. > >The ( -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC >-XX:+PrintGCDetails -Xms256m ) are indeed just for debugging. This is a test >server and we're trying to tune it for the applications. We had some hangs >and crashes on the Production server with OutOfMemory errors. > >many thanks, >Chris > >---------- Original Message ---------------------------------- >From: "Robertson-Ravo, Neil (RX)" <[EMAIL PROTECTED]> >Reply-To: [email protected] >Date: Wed, 18 May 2005 13:50:45 +0100 > >>Well from what you state - it would seem the case that your app is using >>more than you have allocated it hence purge via GC to clear the queue. >> >>What are your server specs? >> >>I would also remove XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC >>-XX:+PrintGCDetails -Xms256m. I know they are probably for debugging but >>they will have a detrimental effect on performance. >> >> >> >> >>-----Original Message----- >>From: Chris Norloff [mailto:[EMAIL PROTECTED] >>Sent: 18 May 2005 13:27 >>To: CF-Talk >>Subject: CFMX GC every 60 sec.? >> >>Is it right for Garbage Collection to run every 60 sec., as regular as >>clockwork? >> >>(CFMX 6.1 server, with updater, Solaris 8. JVM settings: -server >>-Dsun.io.useCanonCaches=false -XX:MaxPermSize=256m -XX:+UseParallelGC >>-Djavax.xml.parsers.SAXParserFactory=com.macromedia.crimson.jaxp.SAXParser F >a >>ctoryImpl >>-Djavax.xml.parsers.DocumentBuilderFactory=com.macromedia.crimson.jaxp.Doc u >m >>entBuilderFactoryImpl -XX:+PrintGCTimeStamps -XX:+PrintHeapAtGC >>-XX:+PrintGCDetails -Xms256m -Xmx768m) >> >>I'm trying to decide if what I'm seeing is right: >> >>- first unloaded classes after running for 13 min. >>- PSPermGen getting to 98% but not increasing size to what's available >>(MaxPermSize=256m) >>- 'from space' in PSYoungGen regularly filling, appears to be causing the >>GC. >>- GC runs every 60 sec. >>- PSOldGen gets the most space of the heap, but 'from space' in PSYoungGen >>is what *needs* the space. >>- NOTE: this is with the server idle. Now I need to see it under load. >> >>thanks, >>Chris Norloff >> >>---------------------------------------------- >>Heap >> PSYoungGen total 87168K, used 84000K [0xb9000000, 0xbe550000, >>0xc9000000) >> eden space 3008K, 0% used [0xb9000000,0xb9000000,0xb92f0000) >> from space 84160K, 99% used [0xb92f0000,0xbe4f8000,0xbe520000) >> to space 192K, 0% used [0xbe520000,0xbe520000,0xbe550000) >> PSOldGen total 174784K, used 6449K [0xc9000000, 0xd3ab0000, >>0xe9000000) >> object space 174784K, 3% used [0xc9000000,0xc964c5a8,0xd3ab0000) >> PSPermGen total 16640K, used 16453K [0xe9000000, 0xea040000, >>0xf9000000) >> object space 16640K, 98% used [0xe9000000,0xea011630,0xea040000) >>15399.411: [Full GC 90449K->6460K(261952K), 0.6580179 secs] >> Heap after GC invocations=510: >>------------------------------------------------------------ >>- just like clockwork. this is obviously the established pattern. >> >> PSYoungGen total 87232K, used 84136K [0xb9000000, 0xbe550000, >>0xc9000000) >> eden space 3008K, 0% used [0xb9000000,0xb9000000,0xb92f0000) >> from space 84224K, 99% used [0xb92f0000,0xbe51a010,0xbe530000) >> to space 128K, 0% used [0xbe530000,0xbe530000,0xbe550000) >> PSOldGen total 174784K, used 6136K [0xc9000000, 0xd3ab0000, >>0xe9000000) >> object space 174784K, 3% used [0xc9000000,0xc95fe3a8,0xd3ab0000) >> PSPermGen total 16640K, used 16465K [0xe9000000, 0xea040000, >>0xf9000000) >> object space 16640K, 98% used [0xe9000000,0xea014600,0xea040000) >>64676.110: [Full GC 90272K->6157K(262016K), 0.6643557 secs] >> Heap after GC invocations=2134: >> >>---------------------------------------------------------------- >> PSYoungGen total 86976K, used 83817K [0xb9000000, 0xbe550000, >>0xc9000000) >> eden space 3008K, 0% used [0xb9000000,0xb9000000,0xb92f0000) >> from space 83968K, 99% used [0xb92f0000,0xbe4ca6c8,0xbe4f0000) >> to space 384K, 0% used [0xbe4f0000,0xbe4f0000,0xbe550000) >> PSOldGen total 174784K, used 6955K [0xc9000000, 0xd3ab0000, >>0xe9000000) >> object space 174784K, 3% used [0xc9000000,0xc96caea8,0xd3ab0000) >> PSPermGen total 17664K, used 17337K [0xe9000000, 0xea140000, >>0xf9000000) >> object space 17664K, 98% used [0xe9000000,0xea0ee670,0xea140000) >>71170.151: [Full GC 90773K->7168K(261760K), 1.0508560 secs] >> Heap after GC invocations=2348: >> >> >> >> >> >> > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. 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