User:Stevex Janus

Contact info

Max Okumoto <okumoto@ucsd.edu>

Projects

• Profiling the Second Life client code on Linux.
  • Profiling is use to determine how much CPU cycles are being used by parts of your code.
  • The GCC compiler has a flag which adds extra code to the binary during compilation. The purpose of the extra code is to record the entry and exit from a procedure. When the program exits the information is written to a file. (usually call gmon.out) This information is then post processed to show you how much process time is spent in each routine.
  • "Gprof" calculates the amount of time spent in each routine. Next, these times are propagated along the edges of the call graph. Cycles are discovered, and calls into a cycle are made to share the time of the cycle.
  • The end goal of course is to speed up the code.
• Cleanup build system.
  • SConstruct fixes
• Submit patches
  • VWR-1182 Remove LL_USE_KDU define which is no longer used from SConstruct
  • VWR-1204 Add option to SConstruct to enable gcc -pg (profiling) and analysis via gprof
  • VWR-1259 gcc 4.X linux KDU build
  • VWR-1265 Add option to SConstruct allowing user to specify gcc/g++ version

The system I use to run Second Life

• Hardware
  • Pentium 3.8GHz
  • 1G byte ram
  • ATI Radeon X300 (PCIE)
  • Two LCD panels (1280x1024)
• Software
  • Works-2
    • SecondLife_i686_1_17_9 (build from src)
    • Fedora Core 6 (2.6.20-1.2952.fc6)
    • ATI binary driver (ati-driver-installer-8.36.5-x86.x86_64.run)
  • Works-1
    • SecondLife_i686_1_16_0_5 (built from src) and SecondLife_i686_1_16_0_6 (binary)
    • Fedora Core 6 (2.6.20-1.2952.fc6)
    • ATI binary driver (ati-driver-installer-8.36.5-x86.x86_64.run)
  • Works-0
    • SecondLife_i686_1_16_0_5 and SecondLife_i686_1_16_0_6 (binary)
    • Fedora Core 6 (2.6.20-1.2948.fc6)
    • ATI binary driver (ati-driver-installer-8.36.5-x86.x86_64.run)
• Build tools
  • compat-gcc-34-3.4.6-4
  • scons-0.97-1.fc6

View the issues Stevex Janus has filed at jira.secondlife.com