Under heavy load, I see that many threads become blocked when GZipping and unpacking the JSP file. The landfill looks like below. It seems to come from "header.jsp" of 14 KB in size.
"http-0.0.0.0-8080-304" daemon prio = 3 tid = 0x0000000008bcc000 nid = 0x302 runnable [0xfffffd7de7bc2000] java.lang.Thread.State: RUNNABLE in java.util.zip.Deflater.deflateBytes (native method) .util.zip.Deflater.deflate (Deflater.java:306) - blocked <0xfffffd7e589078e8> (java.util.zip.ZStreamRef) in java.util.zip.DeflaterOutputStream.deflate (DeflaterOutputStream.java:159) .zip.DeflaterOutputStream.write (DeflaterOutputStream.java:118) in java.util.zip.GZIPOutputStream.write (GZIPOutputStream.java:72) - blocked <0xfffffd7e58524d28> (java.util.zip.Zip.Zip.Zip.Zip.Zip.ZipGZ .DeflaterOutputStream.write (DeflaterOutputStream.java:91) at com.pinksheets.common.web.cache.ServletOutputStreamWrapper.write (ServletOutputStreamWrapper.java:24) in java.io.OutputStream.write (OutputStream.java. nio.cs.StreamEncoder.writeBytes (StreamEncoder.java:202) at sun.nio.cs.StreamEncoder.imp lWrite (StreamEncoder.java:263) at sun.nio.cs.StreamEncoder.write (StreamEncoder.java:106) - blocked <0xfffffd7e58524d48> (java.io.OutputStreamWriter) in java.io.OutputStreamWriter.write (Output 190) in java.io.BufferedWriter.write (BufferedWriter.java:170) - blocked <0xfffffd7e58524d48> (java.io.OutputStreamWriter) in java.io.PrintWriter.write (PrintWriter.javahaps82) - blocked <0xffbdd java.io.BufferedWriter) on org.apache.jasper.runtime.JspWriterImpl.flushBuffer (JspWriterImpl.java:119) on org.apache.jasper.runtime.JspWriterImpl.write (JspWriterImpl.java:326) on org.apache.as .runtime.JspWriterImpl.write (JspWriterImpl.java{42) at org.apache.jsp.include.header_jsp._jspService (header_jsp.java:2032) on org.apache.jasper.runtime.HttpJspBase.service (HttpJsp70ase ) in javax.servlet.http.HttpServlet.service (HttpServlet.java:717)
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