-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 James,
On 1/31/17 2:47 PM, James H. H. Lampert wrote: > We're comparing a number of Tomcat installations at various > customers, trying to figure out why some of them are slow for no > apparent reason. > > We've started comparing the "JVM Version" entry in catalina.out, > entries on the order of: > >> May 26, 2015 12:21:21 PM >> org.apache.catalina.startup.VersionLoggerListener log INFO: Java >> Home: /QOpenSys/QIBM/ProdData/JavaVM/jdk60/32bit/jre May 26, 2015 >> 12:21:21 PM org.apache.catalina.startup.VersionLoggerListener >> log INFO: JVM Version: jvmap3260sr16fp2-20141026_01 May >> 26, 2015 12:21:21 PM >> org.apache.catalina.startup.VersionLoggerListener log > > Java Home is fairly explicit, since it matches the known path to > where the JVM lives. > > But what about the "JVM Version" entry? That comes directly from the "java.runtime.version" system property, which I believe is read-only. (At least, you can't override it when launching the JVM by providing a value for that property using - -Djava.runtime.version=foobar). So that string is coming from your JVM. It's opaque to Tomcat. Here's the code: http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/catalina/start up/VersionLoggerListener.java?revision=1654159&view=markup#l103 If you do a "java -version" from the command-line, you'll probably see that string in there, similar to what is shown on this page: http://archive.midrange.com/midrange-l/201504/msg00568.html (Searching Google for "jvmap3260sr16fp2-20141026_01" yields only 6 results. That's amazing.) - -chris -----BEGIN PGP SIGNATURE----- Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBCAAGBQJYkRCYAAoJEBzwKT+lPKRYc0UP/ihxQvahCXkPhvttmy+QzPKO a2W48Ux69T153mpb0pquwOMPhPFmFu7pZWS8E13AGti3jxvncKkkqP6AP179aEzL PqdW51dE4ud4DpTRxJ5894Pjb8lsCJG+ckNp1QGpsXYoAcVwbPwGdJ21eDGi2+Ii VrRIJNcC63/2SCebkIygx/ijt/G5321WP/GPo4eaTo/WOcKqvV3uFZcg9HFWRPCq KqqYsw9I/F9bVhIQj5fdsfBttqFjqVjL/zIX0pBsuQFI9fccQUuKJrYVuuIu0WyR 5IB9QOEgBsnBeEoYzHBbuUT7c9RR4i+PCv1SfHz1idbgDNI/sMkShvw4DiKCeDoD WYEPIcjiIJH72lpOhJojlrX5jPzcE5ChK4OSzmWSZZqHTURm6HoBmyRuJDYaVfiG lLL5cY/1vrdXNu6PYKtTm3EdmtQ6BYWxd7YNjC4HohisZokspCoYZWnolcTZqeVs b/KONum3q3rHFihhia1XJRLbkNjEOacnLMO9r+KMSf2+ql9oqUUCGOr9VtxQDLzh H/mPwozhPEuXUXME3TBAW/553vJRrR257AzGdFpdnxPfuM0Sg9zHUl3UFzTVBro3 glQOTRd18ibkla4Qm6PAVk4fPutnPYlQhuX/8CZn69G2QjNl6a5uKy6RibZEQ+nc PQZymwHvV71gPA8kcCLl =1S8h -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
