[compiler-rt] r272175 - [esan|wset] Reduce flakiness in samples test

[Derek Bruening via llvm-commits]

Please provide a pointer to which bots.  It is not easy to find which ones
are being referred to at http://lab.llvm.org:8011/waterfall in order to see
the precise test output.

On Fri, Jul 1, 2016 at 1:51 PM, Chandler Carruth <chandlerc at gmail.com>
wrote:

> Any update here? the build bots are flaking because of this test.
>
> On Thu, Jun 23, 2016 at 11:22 PM David Majnemer via llvm-commits <
> llvm-commits at lists.llvm.org> wrote:
>
>> Still seems flaky:
>>
>> /home/llvmbb/llvm-build-dir/llvm-clang-lld-x86_64-debian-fast/llvm.src/projects/compiler-rt/test/esan/TestCases/workingset-samples.cpp:25:17:
>> error: expected string not found in input
>>  // CHECK-NEXT: =={{[0-9]+}}==# 0: {{[ 0-9]+}} {{KB|Bytes}} ({{[ 0-9]+}}
>> cache lines)
>>                 ^
>> <stdin>:4:1: note: scanning from here
>> ==21268== Samples array #1 at period 80 ms
>> ^
>> <stdin>:11:36: note: possible intended match here
>> ==21268== EfficiencySanitizer: the total working set size: 32 MB (524289
>> cache lines)
>>
>> Looks like the regex pattern should be expanded further?
>>
>> On Wed, Jun 8, 2016 at 10:35 AM, Derek Bruening via llvm-commits <
>> llvm-commits at lists.llvm.org> wrote:
>>
>>> Author: bruening
>>> Date: Wed Jun  8 12:35:52 2016
>>> New Revision: 272175
>>>
>>> URL: http://llvm.org/viewvc/llvm-project?rev=272175&view=rev
>>> Log:
>>> [esan|wset] Reduce flakiness in samples test
>>>
>>> Generalizes the workingset-samples test to pass when a sample has a
>>> size of 0, which can happen on a loaded machine.
>>>
>>> Modified:
>>>     compiler-rt/trunk/test/esan/TestCases/workingset-samples.cpp
>>>
>>> Modified: compiler-rt/trunk/test/esan/TestCases/workingset-samples.cpp
>>> URL:
>>> http://llvm.org/viewvc/llvm-project/compiler-rt/trunk/test/esan/TestCases/workingset-samples.cpp?rev=272175&r1=272174&r2=272175&view=diff
>>>
>>> ==============================================================================
>>> --- compiler-rt/trunk/test/esan/TestCases/workingset-samples.cpp
>>> (original)
>>> +++ compiler-rt/trunk/test/esan/TestCases/workingset-samples.cpp Wed
>>> Jun  8 12:35:52 2016
>>> @@ -22,12 +22,12 @@ int main(int argc, char **argv) {
>>>    // We only check for a few samples here to reduce the chance of
>>> flakiness.
>>>    // CHECK:      =={{[0-9]+}}== Total number of samples: {{[0-9]+}}
>>>    // CHECK-NEXT: =={{[0-9]+}}== Samples array #0 at period 20 ms
>>> -  // CHECK-NEXT: =={{[0-9]+}}==#   0: {{[ 0-9]+}} KB ({{[ 0-9]+}} cache
>>> lines)
>>> -  // CHECK-NEXT: =={{[0-9]+}}==#   1: {{[ 0-9]+}} KB ({{[ 0-9]+}} cache
>>> lines)
>>> -  // CHECK-NEXT: =={{[0-9]+}}==#   2: {{[ 0-9]+}} KB ({{[ 0-9]+}} cache
>>> lines)
>>> -  // CHECK-NEXT: =={{[0-9]+}}==#   3: {{[ 0-9]+}} KB ({{[ 0-9]+}} cache
>>> lines)
>>> +  // CHECK-NEXT: =={{[0-9]+}}==#   0: {{[ 0-9]+}} {{KB|Bytes}} ({{[
>>> 0-9]+}} cache lines)
>>> +  // CHECK-NEXT: =={{[0-9]+}}==#   1: {{[ 0-9]+}} {{KB|Bytes}} ({{[
>>> 0-9]+}} cache lines)
>>> +  // CHECK-NEXT: =={{[0-9]+}}==#   2: {{[ 0-9]+}} {{KB|Bytes}} ({{[
>>> 0-9]+}} cache lines)
>>> +  // CHECK-NEXT: =={{[0-9]+}}==#   3: {{[ 0-9]+}} {{KB|Bytes}} ({{[
>>> 0-9]+}} cache lines)
>>>    // CHECK:      =={{[0-9]+}}== Samples array #1 at period 80 ms
>>> -  // CHECK-NEXT: =={{[0-9]+}}==#   0: {{[ 0-9]+}} KB ({{[ 0-9]+}} cache
>>> lines)
>>> +  // CHECK-NEXT: =={{[0-9]+}}==#   0: {{[ 0-9]+}} {{KB|Bytes}} ({{[
>>> 0-9]+}} cache lines)
>>>    // CHECK:      =={{[0-9]+}}== Samples array #2 at period 320 ms
>>>    // CHECK:      =={{[0-9]+}}== Samples array #3 at period 1280 ms
>>>    // CHECK:      =={{[0-9]+}}== Samples array #4 at period 5120 ms
>>>
>>>
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>>>
>>
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