Commit Graph

6 Commits

Author SHA1 Message Date
Martin Stein
eaf4150c7b cpu_quota.run: support X86
The timer driver on X86 needs CPU quota with highest priority as it
frequently has to interrupt the counters to update the PIT.
On ARM this makes no difference in the test results as ARM timer
drivers, once configured, can sleep until the end of the timeouts.
On X86 we raise the error tolerance to 2% (default 1%) to compensate
the error caused by the timer.

Fixes #1621
2015-07-21 09:28:25 +02:00
Martin Stein
53e742fb02 cpu_quota.run: don't get stuck on zero counters
The test previously complained about divide-by-zero if the counters were all
zero.

Fixes #1616
2015-07-21 09:28:25 +02:00
Martin Stein
413741e58c cpu_quota.run: print all errors
Printing all errors and the goal values instead of exiting at the first
error allows for faster analysis of problems with the CPU-quota
mechanism.

Ref #1616
2015-07-21 09:28:25 +02:00
Martin Stein
5189055396 cpu_quota.run: fix bug in error detection
The test always succeeded because I forgot to set the error tolerance from
my debugging value 1 back to the correct value 0.01 before commiting the
test.

Ref #1616
2015-07-21 09:28:25 +02:00
Christian Helmuth
4004a3a9ca cpu_quota: pre-define variables in run script
If a regexp does not match but the variable is used later, the script
exits with an error like

  can't read "slow_quota_sp": no such variable
2015-06-09 11:00:11 +02:00
Martin Stein
c9272937e7 CPU session: apply quota via relative weightings
Physical CPU quota was previously given to a thread on construction only
by directly specifying a percentage of the quota of the according CPU
session. Now, a new thread is given a weighting that can be any value.
The physical counter-value of such a weighting depends on the weightings
of the other threads at the CPU session. Thus, the physical quota of all
threads of a CPU session must be updated when a weighting is added or
removed. This is each time the session creates or destroys a thread.

This commit also adapts the "cpu_quota" test in base-hw accordingly.

Ref #1464
2015-05-06 10:55:16 +02:00