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PROJECT NOT UNDER ACTIVE MANAGEMENT

This project will no longer be maintained by Intel.

Intel has ceased development and contributions including, but not limited to, maintenance, bug fixes, new releases, or updates, to this project.

Intel no longer accepts patches to this project.

If you have an ongoing need to use this project, are interested in independently developing it, or would like to maintain patches for the open source software community, please create your own fork of this project.

Contact: [email protected]

    Workload Interference Detector

CodeQLLicense

Requirements | Usage | Demo | Notes

Workload Interference Detector uses a combination of hardware events and ebpf to capture a wholistic signature of a workload's performance at very low overhead.

  1. instruction efficiency
    • cycles
    • instructions
    • cycles per instruction
  2. disk IO
    • local bandwidth (MB/s)
    • remote bandwidth (MB/s)
    • disk reads (MB/s)
    • disk writes (MB/s)
  3. network IO
    • network transmitted (MB/s)
    • network received (MB/s)
  4. cache
    • L1 instrutions misses per instruction
    • L1 data hit ratio
    • L1 data miss ratio
    • L2 miss ratio
    • L3 miss ratio
  5. scheduling
    • scheduled count
    • average queue length
    • average queue latency (ms)

Requirements

  1. Linux Perf
  2. BCC compiled from source.
  3. pip install -r requirements.txt
  4. Access to PMU
    • Bare-metal
    • VM with vPMU exposed (uncore metrics like disk IO will be zero)
  5. Intel Xeon chip
    • Skylake
    • Cascade Lake
    • Ice Lake
    • Sapphire Rapids
  6. Python

Usage

  1. Monitor processes
sudo python3 procmon.py
  1. Monitor containers (can also export to cloudwatch)
sudo python3 cmon.py
  1. Detect process or container interference. A list of workloads that likely caused the performance degradation is shown.
# process
sudo python3 NN_detect.py --pid <process-pid> --ref_signature <processes's reference signature> --distance_ratio 0.15

# container
sudo python3 NN_detect.py --cid <container id> --ref_signature <container's reference signature> --distance_ratio 0.15

Demo

basic_stats

Notes:

** Interference Detector was developed using the following as references:

  1. github.com/iovisor/bcc/tools/llcstat.py (Apache 2.0)
  2. github.com/iovisor/bcc/tools/tcptop.py (Apache 2.0)
  3. github.com/iovisor/bcc/blob/master/examples/tracing/disksnoop.py (Apache 2.0)
  4. github.com/iovisor/bcc/blob/master/tools/runqlen.py (Apache 2.0)
  5. github.com/iovisor/bcc/blob/master/tools/runqlat.py (Apache 2.0)