Hi, i'm performing a jmap -histo:live on a tomcat which froze because of full (8GB) old space gen, and my top 10 looks like:
num #instances #bytes class name ---------------------------------------------- 1: 19268009 2655683368 [C 2: 17410092 1392807360 org.apache.tomcat.util.buf.MessageBytes 3: 17411294 1114322816 org.apache.tomcat.util.buf.ByteChunk 4: 17410562 974991472 org.apache.tomcat.util.buf.CharChunk 5: 19275640 771025600 java.lang.String 6: 8697280 626204160 javax.servlet.http.Cookie 7: 8699584 417580032 org.apache.tomcat.util.http.MimeHeaderField 8: 188 134247456 [Lorg.apache.tomcat.util.http.MimeHeaderField; 9: 198645 114493776 [Ljava.lang.Object; 10: 21303 30450504 [B So how did I manage to get almost 9 million of mimeheaderfields and cookies and 17 millions message bytes and chunks. During normal operation mode the number of the above doesn't increase except before the gc freeze. I assume they come from hanging .catalina.connector.Request objects I found (about 300), but is it the reason for the freeze or just the followup? tomcat 5.5.20 on linux, java 1.6 regards Leon --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
