tgujar / sys-perf

OS and Hardware Performance measurement

sys-perf

Experiments to characterize and understand a system's performance.

Running experiments

cd src and then follow the commands below

CPU, Scheduling, and OS Services

• Measurement overhead:
  1. Overhead of reading time: make readTimeOverhead
  2. Overhead of using a loop: make readTimeOverheadLoop
• Procedure call overhead: make procedureCallOverhead
• System call overhead: make syscall
• Task creation time:
  1. Time to create a process: make createProcess
  2. Time to create a thread: make createThread
• Context switch time(process switch): make ctxswitch. The data is output in data/CPU/ctxswitch.csv.
• Context switch time(kenel thread switch): make ctxswitchkernel. The data is output in data/CPU/ctxswitchkernel.csv.

Memory

• RAM access time: make ramAccessTime
• RAM bandwidth(read): make readBW
• RAM bandwidth(write): make writeBW
• Page fault service time:
  1. First install cgroups using apt install cgroup-tools
  2. Then make pageFault

Network

• Round trip time(remote and loopback):

  1. On remote machine: make remote_rtt.
  2. On primary machine: make rtt. You will need to modify the ip address specified in the make file for the rtt rule.

• Peak bandwidth(remote and loopback):

  1. On remote machine: make remote_netbw.
  2. On primary machine: make netbw. You will need to modify the ip address specified in the make file for the netbw rule.

• Connection overhead: Loopback connection setup

  1. On primary machine (server): make server
  2. On primary machine (client): make loopback_client_setup

  Loopback connection teardown

  1. On primary machine (server): make server
  2. On primary machine (client): make loopback_client_teardown

  Remote connection setup

  1. On remote machine (server): make server
  2. On primary machine (client): make remote_client_setup. You will need to modify the ip address specified in the make file for the remote_client_setup rule.

  Remote connection teardown

  1. On remote machine (server): make server
  2. On primary machine (client): make remote_client_teardown. You will need to modify the ip address specified in the make file for the remote_client_teardown rule.

File System

• Size of file cache: make fscacheSize
• File read time: make fileReadTime
• Remote file read time:
  1. Create an NFS directory on the remote. REF
  2. Mount the directory on the temp folder in src/Filesystem/temp using the command sudo mount -t nfs -o noac,lookupcache=none XXX.XX.XX.XX:/{remote_nfs_dir} Filesystem/temp
  3. make remote_fileReadTime
• Contention: make fileContentionCompleteRun