Commit Graph

21 Commits

Author SHA1 Message Date
Norman Feske
bf62d6b896 Move timer from os to base repository
Since the timer and timeout handling is part of the base library (the
dynamic linker), it belongs to the base repository.

Besides moving the timer and its related infrastructure (alarm, timeout
libs, tests) to the base repository, this patch also moves the timer
from the 'drivers' subdirectory directly to 'src' and disamibuates the
timer's build locations for the various kernels. Otherwise the different
timer implementations could interfere with each other when using one
build directory with multiple kernels.

Note that this patch changes the include paths for the former os/timer,
os/alarm.h, os/duration.h, and os/timed_semaphore.h to base/.

Issue #3101
2019-01-14 12:33:57 +01:00
Martin Stein
96fa3ef28c cpu_quota.run: be more tolerant on QEMU in general
As we may run several tests on the same CPU in paralell,
we have to consider more inconsistency in timing.
2017-11-30 11:23:18 +01:00
Christian Helmuth
8bd0efced6 Remove obsolete RAM/CAP services from run scripts
Adapted launchpad and also the rm_fault and resource_request tests.

Issue #2407
2017-05-31 13:16:22 +02:00
Stefan Kalkowski
0fb672b493 run: use default Qemu memory size for x86
Fix #2428
2017-05-31 13:16:19 +02:00
Norman Feske
773e08976d Assign cap quotas in run scripts and recipes
Issue #2398
2017-05-31 13:16:06 +02:00
Martin Stein
9834f0cf1e cpu_quota.run: raise test timeout
Previously it worked on Panda only because the timer driver was too
fast.

Ref #2308
2017-03-15 12:32:25 +01:00
Martin Stein
b05b5616c8 x86 cpu_quota: lower error tolerance
Previously, on X86, the timer driver used the PIT with a maximum timeout
of 54 ms.  Thus, the driver frequently interrupted the counters with
highest priority to update the timer. This is why we needed a higher
error tolerance as for ARM where the driver, once configured, can sleep
for the whole test timeout. Now, we use the kernel timer and the problem
seems to be exits no longer.

Ref #2304
2017-03-15 12:24:44 +01:00
Martin Stein
574a1bd198 test/cpu_quota: tolerate errors in session quota
Previously we pre-calculated the translation errors for the session
quota to make a discret check in the test. But since the order, in which
init childs get their CPU quota isn't always the same anymore (we should
have never made assumptions about that) the translation errors differ
from trial to trial. However, the errors are below 0.01% of the super
period. We now tolerate them in the run script.

Ref #2304
2017-03-15 12:24:44 +01:00
Stefan Kalkowski
fc273f3840 run: remove vanished kernel/platform specifier 2017-01-13 13:07:01 +01:00
Norman Feske
ccffbb0dfc Build dynamically linked executables by default
Fixes #2184
2016-12-14 11:22:27 +01:00
Norman Feske
3bceefc9cf Omit superfluous use of "CAP"/"SIGNAL" services
The functionality of the former "CAP" and "SIGNAL" services is now
provided by core's "PD" service.
2016-05-09 13:24:51 +02:00
Martin Stein
01643ccd94 cpu_quota hw exynos5: raise error tolerance
From our observations we can tell that the error should not exceed 4%.
However, there is no reasonable explanation by now why the test results
are less stable on these platforms. We have tried several things that
did not lead to an explanation or improvement:

  * changing the timing parameters of the scheduler
  * switching off SMP
  * double-checking the speed of userland and kernel timers

Ref #1805
2015-12-10 13:16:26 +01:00
Martin Stein
227b539193 cpu_quota x86_64: fix RAM quota and stack size
The test threads previously used a stack size independent from the machine
word width. Qemu was previously configured to provide 64Mb of RAM which isn't
sufficient for x86_64.

Ref #1805
2015-12-10 13:16:26 +01:00
Martin Stein
a3a8978d77 cpu_quota zynq_qemu: raise error tolerance
On Qemu, the test results for Xilinx Zynq-7000 are less stable than usual.

Ref #1805
2015-12-10 13:16:26 +01:00
Martin Stein
6410bd7261 cpu_quota.run: more info and simpler calculations
Print result error and error tolerance per test result. Use TCL commands
'format' and 'abs'to simplify calculations in the conclusion part of the run
script.

Ref #1805
2015-12-10 13:16:26 +01:00
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