Implement a performance testing tool for sensors

There are a lot of hypothesis being made about how to improve the
performance of the sensor subsystem within OpenBMC.  There are a number
of statements being made about dbus performance that actually seem
likely to be related to the efficiency of specific implementations of
certain sensors within OpenBMC.  Blocking calls, non blocking calls,
asio, bulk collection, eventing, threads and other design decisions all
can have an effect on the performance of a sensor application.

This commit attempts to write a small, portable daemon that publishes
sensor interfaces read from memory in a relatively simple and
controllable manner.  This allows running it on a bmc (with services
unloaded) to determine some theoretical "max" performance
characteristics, assuming 0 cost for grabbing actual values.

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: I27f1560ba13492ccff6a01013c3a1d5ee210cef0
6 files changed
tree: a26c86dd3c2865169772b3af31a17813a8467333
  1. adcapp/
  2. altitude/
  3. autojson/
  4. bbdbg/
  5. bi2cp/
  6. cla-signers/
  7. dbus-pcap/
  8. dbus-vis/
  9. dbus_sensor_tester/
  10. dbusView/
  11. ddconvnotrunc/
  12. expectedJsonChecker/
  13. format-yaml/
  14. maintainers/
  15. netboot/
  16. openbmc-autobump/
  17. openbmc-events/
  18. openbmctool/
  19. overlay/
  20. pldm/
  21. prepare-emmc-qemu/
  22. pretty-journal/
  23. pwmtachtool/
  24. reboot/
  25. reboot-ping-pong/
  26. rootfs_size/
  27. sensor_yaml_config/
  28. tof-voters/
  29. tracing/
  30. upload_and_update/
  31. witherspoon-debug/
  32. LICENSE
  33. MAINTAINERS
  34. README.md
README.md

The OpenBMC Tools Collection

The goal of this repository is to collect the two-minute hacks you write to automate interactions with OpenBMC systems.

It's highly likely the scripts don't meet your needs - they could be undocumented, dysfunctional or utterly broken. Please help us improve!

Repository Rules

  • Always inspect what you will be executing
  • Some hacking on your part is to be expected

If you're still with us

Then this repository aims to be the default destination for your otherwise un-homed scripts. As such we are setting the bar for submission pretty low, and we aim to make the process as easy as possible.

Sending patches

Please use gerrit for all patches to this repository:

Do note that you will need to be party to the OpenBMC CLA before your contributions can be accepted. See Gerrit Setup and CLA for more information.

What we will do once we have your patches

So long as your patches look sane with a cursory glance you can expect them to be applied. We may push back in the event that similar tools already exist or there are egregious issues.

What you must have in your patches

We don't ask for much, but you need to give us at least a Signed-off-by, use SPDX markers in your source files and put your work under an Apache 2.0 compatible license.

How you consume the repository

There's no standard way to install the scripts housed here, and adding parts of the repository to your PATH might be a bit of a dice-roll. We may also move or remove scripts from time to time as part of housekeeping. It's probably best to copy things out if you need stability.