JDK-6678929 : Slow client JVM initialization at applet launch time (2)
  • Type: Bug
  • Component: deploy
  • Sub-Component: plugin
  • Affected Version: 6u10
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2008-03-23
  • Updated: 2010-09-08
  • Resolved: 2008-04-29
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
JDK 6
6u10 b23Fixed
Related Reports
Duplicate :  
JDK-6680298 - plugin2 knuddels.de chat applet doesn't start
Relates :  
JDK-6687820 - AF_UNIX pipe file doesn't get deleted on browser exit
Relates :  
JDK-6689174 - Plugin2: Tray icon open/close console menu broken if java console is closed externally
Relates :  
JDK-6697433 - b23- java console content isn't initially well formatted with OOPP
Relates :  
JDK-6687876 - Bootstrapping of new plug-in broken with startup changes
Relates :  
JDK-4145756 - connecting between Java socket and Unix Domain socket.
Relates :  
JDK-6714877 - plugin2 printing is not working - CNFE sun/plugin2/main/client/WPluginEmbeddedFrame
Relates :  
JDK-6678865 - Long command lines or applet parameter lists break new plug-in on Windows
Relates :  
JDK-6668037 - Slow client JVM initialization at applet launch time
Relates :  
JDK-6687899 - UnixDomainSocket.c breaks some Solaris builds
Description
CR 6668037 started to fix the slow launch time, and boost it about 200ms.

We figured, this is not sufficient, 
and need to measure the 'coast-coast' startup time,
which is from client JVM launch until the call of applet.init().

We have a 'gut' feeling, that this period is >> 1s,
at least on Unix.

While impl. the 2nd iteration to boost the performance,
the measurement showed, that the JVM launch time itself differs each time
and lies around 200-400ms.

The total launch time incl. JVM until applet.init()
was around 1.4s on GNU/Linux x86_64 running 32bit binaries.
Comments
SUGGESTED FIX To minimize the overal startup time of a first applet launch, we have to break the linear initialization sequence and parallelize it. It turns out, that some of the AWT functionality can be 'warmed-up' in parallel, while the IPC layer is initialized. Another benefit is the usage of UnixDomainSockets (AF_UNIX) and the now platform transport unification on NamedPipe. The former SocketTransport initialization with it's socket setup, took about 100ms.
09-04-2008
EVALUATION To minimize the overal startup time of a first applet launch, we have to break the linear initialization sequence and parallelize it. It turns out, that some of the AWT functionality can be 'warmed-up' in parallel, while the IPC layer is initialized.
23-03-2008