Re: user space probe in ubuntu 14.04

[Gareth <academicgareth at gmail dot com>]

Thanks for your hint David

I have just installed mysql related dbgsym packages, but it still doesn't work:

http://paste.openstack.org/show/462299/

Btw the '^' at line 25 and line 30 is pointing at the 'p' of 'process'.

No more ideas now : (

On Tue, Sep 15, 2015 at 12:29 AM, David Smith <dsmith@redhat.com> wrote:
> On 09/14/2015 09:54 AM, Gareth wrote:
>> Hey guys
>>
>> What's the requirements for using systemtap in ubuntu 14.04 (kernel
>> version = 3.13)?
>>
>> I have installed kernel-image package and found many probes by 'stap
>> -l 'kernel.function("acpi_*")'. However I sill can't use
>> process("xxx").xxx
>>
>> I tried find online documents and I'm sure uprobe is enabled, utrace
>> is not. But that document said utrace is deprecated long time ago...
>>
>> My output is here: http://paste.openstack.org/show/461444/
>
> From your output, I see you are trying to use markers, since you did the
> following:
>
>    probe process("/usr/sbin/mysqld").mark("query__start")
>
> So, the first thing to do is make sure that your /usr/sbin/mysqld was
> compiled with markers. Try the following:
>
> # readelf -n /usr/bin/mysql | fgrep Name
>
> If that works, try:
>
> # stap -l 'process("/usr/sbin/mysqld").mark("*")'
>
>
> --
> David Smith
> dsmith@redhat.com
> Red Hat
> http://www.redhat.com
> 256.217.0141 (direct)
> 256.837.0057 (fax)



-- 
Gareth

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