tree a26c86dd3c2865169772b3af31a17813a8467333
parent c49e2c5cabe5401de5931fe470096800e0aa1bf9
author Ed Tanous <edtanous@google.com> 1648674221 -0700
committer Ed Tanous <ed@tanous.net> 1650996084 +0000

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