Martin,
To be honest, 3.0.2 is the first version I have deployed on this scale.
Before work started on 3.0.3, I actually couldn't get clean data back from many
clusters due to the xml truncation issues with gmond (fixed 3/20) so it was
unclear to me whether the issue existed within gmetad or because gmond was
returning bad data.
I did not realize that the approach Brooks and Jason elaborated on earlier in
the thread were well known. I will attempt the tmpfs solution for now -
perhaps as Eli noted it would be a worthwhile exercise to analyze the i/o
routines and try to make gmetad more efficient.
Gil
----- Original Message ----
From: Martin Knoblauch <[EMAIL PROTECTED]>
To: Gilad Raphaelli <[EMAIL PROTECTED]>;
ganglia-developers@lists.sourceforge.net
Sent: Friday, April 14, 2006 8:19:36 PM
Subject: Re: [Ganglia-developers] RE: [Ganglia-general] New (final?) tarball
for ganglia-3.0.3
Gilad,
the code seems not very clean to me. One would have to check whether
it is more efficient to first stat the directory.
Just to be sure: this also happens with 3.0.2 and before?
Thanks
Martin
--- Gilad Raphaelli <[EMAIL PROTECTED]> wrote:
> Bernard,
>
> The failed directories are the ones to hold the rrds for each
> individual host like 'ganglia/grid/rrds/cluster/host/' and
> 'ganglia/grid/rrds/cluster/__SummaryInfo__/'
>
> This seems normal based on rrd_helpers.c where:
>
> my_mkdir ( const char *dir )
> {
> pthread_mutex_lock( &rrd_mutex );
> if ( mkdir ( dir, 0755 ) < 0 && errno != EEXIST)
> {
> pthread_mutex_unlock(&rrd_mutex);
> err_sys("Unable to mkdir(%s)",dir);
> }
> pthread_mutex_unlock( &rrd_mutex );
> }
>
> I assume that this is more efficient then checking for directory
> existence and then conditionally creating it. A smaller setup on the
> same box also has the 'gmetad RET mkdir -1 errno 17 File exists'
> in ktrace but not on scale where it is noticeable.
>
> Please let me know if you would like any additional information.
>
> Gil
>
------------------------------------------------------
Martin Knoblauch
email: k n o b i AT knobisoft DOT de
www: http://www.knobisoft.de
-------------------------------------------------------
This SF.Net email is sponsored by xPML, a groundbreaking scripting language
that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642
_______________________________________________
Ganglia-developers mailing list
Ganglia-developers@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/ganglia-developers
