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Kara Zaffarano SunyIT.  Detect CPU bound and I/O bound processes  Increase process priority for CPU bound processes and lower nice value  Lower priority.

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Presentation on theme: "Kara Zaffarano SunyIT.  Detect CPU bound and I/O bound processes  Increase process priority for CPU bound processes and lower nice value  Lower priority."— Presentation transcript:

1 Kara Zaffarano SunyIT

2  Detect CPU bound and I/O bound processes  Increase process priority for CPU bound processes and lower nice value  Lower priority for I/O bound processes and increase nice value  Control operation using a system call  Toggle functionality  Set parameters  Log detection and changes to process priority

3  Virtual machine (VM)  2GB RAM  2 2.1GHz cores  Ubuntu 12.10  3.8-rc6 Kernel

4  Kernel/sched/fair.c  Include/linux/syscalls.h  Arch/x86/syscalls.tbl

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10  Phoronix  Automated open source testing framework  http://www.phoronix-test-suite.com/ http://www.phoronix-test-suite.com/  Chess test suite  Tscp – AI algorithm for the game of chess  Custom AI project test  Classification

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13  High deviations in collected data both with and without modifications  Caused by virtual environment?  Time skew issue wasted a lot of time  Would have tested/validated modifications more  Would have cleaned up the code a bit more  Would have explored rt, se  Etc.  Slow VM!!!!

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