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

[Santosh Shukla <sshukla at mvista dot com>]

On Mon, Sep 22, 2014 at 7:20 PM, David Smith <dsmith@redhat.com> wrote:
> 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?
No. V3 patch set which I sent out today. It is tested for -rt and
non-rt mode. I could send you the systemtap.sum for both the cases if
you suspect on test results, Let me know, thanks.

>
>> 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.

I am really not sure :) You are asking me to fish out and answer out
of 4000+ test, which one failed on -rt and on non-rt. You may try
running v3 patchset for -rt and non-rt mode.

>
> --
> David Smith
> dsmith@redhat.com
> Red Hat
> http://www.redhat.com
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