-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Jorge,
On 6/7/12 3:03 PM, Jorge Medina wrote: > I am using MongoDB through the Java driver allowing up to 100 > connections to the MongoDB server. 100 connections sounds a bit high to me, but I don't know your requirements.... nor do I know anything about the MongoDB driver. I suspect it's not a JDBC driver since Mongo is document-oriented and not SQL-oriented. > I also use DBCP with a max size of 50 JDBC connections. My webapp > uses about 150 JAR files. Neither of those seem unusually high. > There is no native libraries loaded from my webapp as far as I > know. All the app is pure Java code. (Nevertheless, Tomcat is > using the Tomcat Native Library) Have you tried disabling the native library to see if it has any effect? tcnative is fairly stable, but it's something that is easy to test. > Is there a way I can monitor the number of file descriptors in use > by the app? I dunno about realtime, but you can use something like 'lsof' to check on the open file descriptors of a process. Remember that a socket connection requires two file descriptors: one to read and one to write. If you have maxed-out your db connections, you'll have 300 file descriptors open at once. That's not terribly high, but you'll be using fds for other things as well (incoming HTTP connections, etc.) and could use-up a lot of native memory that way. > I have monitored the number of threads, but I haven't seen > anything unusual. (but it could be that the burst is too fast to > get catch by the monitoring tool) What about JVM startup parameters? Also <Connector> configuration? - -chris -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.17 (Darwin) Comment: GPGTools - http://gpgtools.org Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk/RDnMACgkQ9CaO5/Lv0PDyqACgpBGlvYUBBMMiz5M6fdaYBrPF KVsAn1hz9AH4n2vzIh92EvUEBY9GHz8v =0rwW -----END PGP SIGNATURE----- --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
