Re: [SYSTEMTAP/PATCH v2 0/6] RT aware systemtap patch set

[David Smith <dsmith at redhat dot com>]

On 09/20/2014 08:12 AM, Santosh Shukla wrote:
> Hi,
> 
> On Fri, Sep 19, 2014 at 11:12 PM, Santosh Shukla <sshukla@mvista.com> wrote:
>> On Fri, Sep 19, 2014 at 8:16 PM, David Smith <dsmith@redhat.com> wrote:
>>> On 09/16/2014 07:49 AM, Santosh Shukla wrote:
>>>> Hi,
>>>>
>>>> This is a v2 version of -rt aware systemtap patchset, tested for 3.14.12-rt9 and for 3.10.40-rt38 kernel version.
>>>> For v1->v2 related details refer [1]. Patchset based on stap upstream link [2] master branch.
>>>
>>> I did a bit of testing on these patches.
>>>
>>> First I tested plain systemtap code on 3.10.0-153.el7.x86_64 to get a
>>> baseline. I then applied the 6 patches, and re-ran the entire testsuite
>>> on that kernel. No changes. Great.
>>>
>>> I then put 3.10.0-155.rt56.79.el7rt.x86_64 on that same system and ran
>>> the testsuite. Unfortunately the system crashes somewhere in check.exp.
>>> So, we've still got a ways to go.
>>>
>>
>> Right, I fixed those.. still seeing few deadlock. I'll update v3 patch
>> set passing installcheck testsuite soon. Thanks.
> 
> Test result summary for make installcheck using el7 config on -rt and
> non-rt mode tested on vanilla 3.14.12 (non-rt) and on 3.14.12-rt9
> kernel below :

Let me see if I understand this:

-rt mode: This is your patched systemtap running on a rt kernel

non-rt mode: This is your patches systemtap running on a regular,
non-rt, kernel.

Is the above correct?

> 1) -rt mode:
> 
> 
> === systemtap Summary ===
> 
> # of expected passes 5060
> # of unexpected failures 131
> # of unexpected successes 1
> # of expected failures 315
> # of known failures 68
> # of untested testcases 275
> # of unsupported tests 4
> 
> 
> 
> 2) non-rt mode:
> 
>                 === systemtap Summary ===
> 
> # of expected passes            4988
> # of unexpected failures        181
> # of unexpected successes       1
> # of expected failures          315
> # of known failures             68
> # of untested testcases         285
> # of unsupported tests          4

What's odd here is that the number of unexpected failures is higher on
the non-rt kernel. I would have expected the other way around.

-- 
David Smith
dsmith@redhat.com
Red Hat
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