Re: [pcp] Fetch User CPU Usage as a Percentage?

[Rohan Arora <rarora2012@xxxxxxxxx>]

Now I am running into an issue in the metricPrint() function in the Metric class, which is defined as follows:

def metricPrint(self):

    print self.ctx.pmIDStr(self.pmid), self.name

    indomstr = self.ctx.pmInDomStr(self.desc.indom)

    print "  ", "indom:", indomstr

    instD = self.ctx.mcGetInstD(self.desc.indom)

    for inst, name, val in self.netValues:

      print "  ", name, val

Calling metric.metricPrint() results in the following error:

.../pmcc.py", line 158, in metricPrint
  indomstr = self.ctx.pmInDomStr(self.desc.indom)
AttributeError: 'LP_pmDesc' object has no attribute 'indom'

If I change the line to self.desc.contents.indom I get the error:

pmapi.py", line 450, in get_indom
  value.pval = pmdesc
TypeError: expected LP_pmDesc instance, got longÂ

If I change the line to self.desc, the function at least gets past that line. However, when I do get past that line, the function then fails with the following error, about which I am not sure what to do:

... in metricPrint
  instD = self.ctx.mcGetInstD(self.desc.indom)
AttributeError: 'pmContext' object has no attribute 'mcGetInstD'

I see that mcGetInstD() is defined under the MetricCache class, but I don't really know how that helps to be honest. I'm lost with where to go from here.

Thanks,

Rohan

On Thu, Jul 30, 2015 at 2:56 PM Rohan Arora <rarora2012@xxxxxxxxx> wrote:

Nevermind, sorry about that, realized I was just forgetting to get the descs with context.pmLookupDescs.

Thanks,

Rohan

On Thu, Jul 30, 2015 at 1:26 PM Rohan Arora <rarora2012@xxxxxxxxx> wrote:

So dropping the new files in seems to have worked fine. All of the .py files are from version 3.10.5. Now I am running into some trouble trying to create the Metric objects. I use the following code to create the MetricCore objects:

metrics = (

   Â"mem.physmem",

   Â"mem.util.used",

   Â"kernel.all.cpu.idle",

   Â"kernel.all.cpu.sys",

   Â"kernel.all.cpu.user"

  )

context = pmapi.pmContext(PM_CONTEXT_HOST, "127.0.0.1")

metric_ids = context.pmLookupName(metrics)

metric_cores = []

for i in range(len(metrics)):

metric_cores.append(pmcc.MetricCore(context, metrics[i], metric_ids[i]))

Now, if I try to make a Metric object using the following:

metrics = []

for core in metric_cores:

metrics.append(pmcc.Metric(core))

I get an error, because in the constructor for the Metric class, the following lines fail:

self._convType = core.desc.contents.type

self._convUnits = core.desc.contents.units

This is due to core.desc not being defined, so I get None as the result for it. Am I creating the MetricCore objects incorrectly?

Thanks,

Rohan

On Thu, Jul 30, 2015 at 10:55 AM Rohan Arora <rarora2012@xxxxxxxxx> wrote:

I am using 3.9.4 as that was what installed through "yum" but I have the source from git. I will try to see if I can just replace the older Python files for the new ones.

Thanks,

Rohan

On Thu, Jul 30, 2015 at 10:09 AM Lukas Berk <lberk@xxxxxxxxxx> wrote:

Hi,

Rohan Arora <rarora2012@xxxxxxxxx> writes:
> As far as I can tell, there is no metricConvert() function defined in
> pmcc.py. Is it available in the Python version of pmcc?

In the current upstream source it should be defined as:
src/python/pcp/pmcc.py:237:Â Â def metricConvert(self, delta):

git blame points to it being present since at least Oct 2014, so
depending on what version of PCP you're using (3.10.0+ aiui),
metricConvert() should be available.

Cheers,

Lukas