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Page 1: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority

Kara ZaffaranoSunyIT

Page 2: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority

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

Page 3: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority

Virtual machine (VM) 2GB RAM 2 2.1GHz cores

Ubuntu 12.10 3.8-rc6 Kernel

Page 4: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority

Kernel/sched/fair.c Include/linux/syscalls.hArch/x86/syscalls.tbl

Page 5: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority
Page 6: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority
Page 7: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority
Page 8: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority
Page 9: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority
Page 10: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority

Phoronix Automated open source testing

framework http://www.phoronix-test-suite.com/

Chess test suite Tscp – AI algorithm for the game of

chessCustom AI project test

Classification

Page 11: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority
Page 12: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority
Page 13: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority

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!!!!

Page 14: Kara Zaffarano SunyIT. Detect CPU bound and I/O bound processes Increase process priority for CPU bound processes and lower nice value Lower priority

1 Scheduling Introduction to Scheduling Bursts of CPU usage alternate with periods of I/O wait –a CPU-bound process –an I/O bound process

DISTRIBUTED COMPUTER SYSTEMSjacklange/teaching/cs2510-f15/obsolete_lectures/03... · Process control block (PCB) state memory files accounting priority user CPU registers storage

Fixed-Priority Multiprocessor Scheduling - Uppsala … Single-processors Liu and Layland’sUtilization Bound [1973] (the 19th most cited paper in computer science) Scheduled by RMS

Inside the Python GIL - Dabeazdabeaz.com/python/GIL.pdf · Multicore GIL Contention •With multiple cores, CPU-bound threads get scheduled simultaneously (on different cores) •

UNIVERSITY - Coverbind: Document Binding Machines, Thermal ... · covered and bound by 9 A.M. PRIORITY: Speed NEEDS: 12 sales proposals to knock top client’s socks off PRIORITY:

Run-Time Scheduling Support for Hybrid CPU/FPGA SoCs · Benefits of a HW-based Scheduler ... –Dynamic priority changes can’t happen in parallel. University of Kansas ... •Priority

Omron - CS1D-CPU H CPU Units CS1D-CPU S CPU Units ......CS1D CPU Units Function CS1D-CPU@@H CS1D-CPU@@S Duplex CPU, Single I/O Expansion System Duplex CPU, Dual I/O Expan-sion System

ManagingGPUConcurrencyin Heterogeneous&Architectures&omutlu/pub/gpu... · evaluated&architecture& llc/ mc llc/ mc llc/ mc llc/ mc llc/ mc llc/ mc llc/ mc cpu cpu cpu cpu cpu cpu cpu

Async void is only for top-level event handlers. Use TaskCompletionSource to wrap Tasks around events. Use the threadpool for CPU-bound code, but not

CPU Performance Pipelined CPU

Section 6. Interrupts - Microchip Manuals/16-Bits Family Reference... · Section 6. Interrupts Interrupts 6 6.1.3 CPU Priority Status The CPU can operate at one of the 16 priority

Priority A | Priority B | Priority C | Priority D |Priority

CPUs CPU performance CPU power consumption Elements of CPU performance Cycle time CPU pipeline Memory system

MIPS Assembler Programming - Cornell University · 2011-08-21 · Priority Scheduling. Priority Scheduling Choose next job based on priority For SJF, priority = expected CPU burst

Is it just a question of priority - School of Computer Science · Is it just a question of priority ? Inspiration from the vertebrate basal ganglia Abbreviations: CPu, caudate putamen

CPU Scheduling Outline - KU ITTCittc.ku.edu/~kulkarni/teaching/EECS678/slides/chap6.pdfCPU Scheduling –Outline What is ... arrival of a higher priority process ... multiple queues

dsPIC33/PIC24 FRM, Interrupts - Microchip Technologyww1.microchip.com/...FRM,-Interrupts-DS70000600E.pdf · Interrupts 1.4 CPU Priority Status The CPU can operate at one of the 16

Operating Systems Scheduling. Bursts of CPU usage alternate with periods of waiting for I/O. (a) A CPU-bound process. (b) An I/O-bound process. Scheduling

On Load Shedding in Complex Event Processingload shedding, memory-bound load shedding, and dual-bound load shedding (with both CPU- and memory-bound). In addition we can have integral

AStudyoftheFundamentalPerformanceChar ... · database analytics workloads on CPU and GPU. 2.1 GPUArchitecture Many database operations executed on the GPU are performance bound by

COS 318: Operating Systems CPU Scheduling15 Priority Scheduling Obvious Not all processes are equal, so rank them The method Assign each process a priority Run the process with highest

Async void is only for top-level event handlers. Use the threadpool for CPU-bound code, but not IO-bound. Use TaskCompletionSource to wrap Tasks around

An Adaptive Priority Tuning System for Optimized Local CPU

SAEOPP Priority 1 Training Proposed Changes to Upward Bound, UB Math/Science & Veteran’s UB Annual Performance Report

Big Data Tools and Pipelines for Machine Learning …...2019/12/04  · Performance - Lessons Learned • Data preparation is CPU bound • Heavy serialization-deserialization due

Most Common Mistakes in Using Tasks and in Asynchronous …end5 start5 Source: Lucian Wischik. CPU bound vs IO bound operations end2 start1 start2 start3 start4 start5 response out

LAB MANUAL - dbit.ac.in A program to simulate the priority CPU scheduling algorithm Turbo C/C++ 4 A program to simulate the Round Robin CPU scheduling algorithm Turbo C/C++ …

High Performance Computing at ac3 - University of Wollongongtim/casties.pdf · Shared Memory (SMP) CPU CPU CPU CPU Mem 3. Clusters CPU CPU CPU CPU The Earth Simulator (currently the

Get moving with CMC FPGA/GPU Cluster · 2019. 12. 12. · FPGA GPU CPU CPU FPGA GPU CPU CPU FPGA GPU CPU CPU FPGA GPU CPU 2 x CPU 2 x CPU 2 x CPU 2 x CPU 8 x CPU 2 x CPU & Large memory

Siemens - S7-300 Instruction List CPU 31x, CPU 31x, …...S7-300 Instruction List CPU 31xC, CPU 31x, IM 151-7 CPU, IM 151-8 CPU, IM 154-8 CPU, BM 147-1 CPU, BM 147-2 CPU This instruction

PowerPoint Presentationoss.oracle.com/~wcoekaer/docs/Virtualization_Overview.p… · PPT file · Web view2011-11-18 · CPU performance can be optimized for CPU-bound workloads by

CPU Schedulinghaggerty/teaching/CISC361/09... · 2009. 3. 18. · CPU Scheduling Remember process switching is expensive. Need to save state. *I/O Bound and cpu bound processes *

Forensics resource usage...Conclusions •Most forensics tasks are disk bound and single threaded. •Even when not single threaded a two core CPU is enough •When picking a CPU,

CPU CPU 81,349 CPU CPU X86 CPU CPU CPU CPU CPU ) , CPU

Chapter 5: CPU SchedulingDefine : 3. ,0 1 2. predicted value for the next CPU burst 1. actual lenght of CPU burst ... –FCFS and RR –Highest priority process always runs first NCHU