Re: PM_L1MISS_LAT_EXC_xxx events

Henry May
IBM InfoSphere Streams Performance
[email protected]
720-342-8873
Tie: 963-8873


William Cohen <[email protected]> wrote on 11/18/2014 09:15:24 PM:

> From: William Cohen <[email protected]>
> To: Henry May/Rochester/IBM@IBMUS, [email protected]
> Date: 11/18/2014 09:15 PM
> Subject: Re: PM_L1MISS_LAT_EXC_xxx events
> 
> On 11/18/2014 08:47 PM, Henry May wrote:
> > I have RHEL7 on a P8 and am unable to collect any of the 
> PM_L1MISS_LAT_EXC_xxx events with ocount.  Any suggestions?
> > 
> > [root@pftul3 ~]# /opt/at7.0/bin/ocount -s -c -b -e 
PM_L1MISS_LAT_EXC_32
> > perf_event_open failed with Invalid argument
> > Caught runtime error while setting up counters
> > Internal Error.  Perf event setup failed.
> > Error running ocount
> > 
> > Henry May
> > IBM InfoSphere Streams Performance
> > [email protected]
> > 720-342-8873
> > Tie: 963-8873
> > 
> > 
> 
> Hi Henry,
> 
> It would be helpful to include the oprofile version that you have 
> the problem with.  If you are using the oprofile-0.9.9-4.el7, then 
> it is likely because the updated power8 events were added after 
> oprofile-0.9.9 was created and the power8 event patch wasn't yet 
> available.  There is a patch for the upcoming rhel-7.1 version of 
> oprofile that includes the following patch:
> 
> 
> commit 3795ee4a10c11e16c8d13b5a5d7a6f10615a40d5
> Author: Maynard Johnson <[email protected]>
> Date:   Wed Sep 25 11:15:30 2013 -0500
> 
>     Add two new POWER8 events that are needed for stall analysis
> 
>     Signed-off-by: Maynard Johnson <[email protected]>
> 
> 
> -Will
> 
Thanks for the response, Will.  I have 1.0.0
[root@pftul3 ~]# /opt/at7.0/bin/ophelp -v
/opt/at7.0/bin/ophelp: oprofile 1.0.0git compiled on Jul 24 2014 13:48:26
It appears this build predates the addition of the above events.  This was 
a pre-built package.  I've subsequently downloaded the source with
git clone git://git.code.sf.net/p/oprofile/oprofile 
and I'm still getting the same error.
[root@pftul3 oprofile]# /usr/local/bin/ocount -s -c -b -e 
PM_L1MISS_LAT_EXC_32
perf_event_open failed with Invalid argument
Caught runtime error while setting up counters
Internal Error.  Perf event setup failed.
Error running ocount
[root@pftul3 oprofile]# /usr/local/bin/ocount -v
/usr/local/bin/ocount: oprofile 1.1.0git compiled on Nov 19 2014 08:15:47


One additional question:  There are actually 4 events, and the reference 
only mentions two.  Can you reconcile that?

------------------------------------------------------------------------------
Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server
from Actuate! Instantly Supercharge Your Business Reports and Dashboards
with Interactivity, Sharing, Native Excel Exports, App Integration & more
Get technology previously reserved for billion-dollar corporations, FREE
http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk

_______________________________________________
oprofile-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/oprofile-list