sPHENIX tracking discussion

[pinkenburg <pinkenburg AT bnl.gov>]

Hi folks,

I ran over 10k events from the latest production under prmon with the 
current tracking (Wednesday to be specific). The plots are attached. It 
doesn't seem to make a difference if the tracks are written out or not 
(with output/no output) . There goes my pet theory which was based on 
https://github.com/pinkenburg/rootmemory, though those tests were done 
without reading root objects which is what our tracking does.

Our resident memory grows by quite a bit, roughly a factor of 2 (rss 
memory only in PrMon_wtime_vs_rss_with_output.png). If the vmem turns 
out to be a feature we need to adjust the swap space of our nodes by 
quite a bit.

Another observation is that asking for 10k events results in reading 
10195 events - something in our chain is discarding events at a 2% level 
(returning ABORT_EVENT).

Chris

--
*************************************************************

Christopher H. Pinkenburg       ;    pinkenburg AT bnl.gov
                                ;    http://www.phenix.bnl.gov/~pinkenbu

Brookhaven National Laboratory  ;    phone: (631) 344-5692
Physics Department Bldg 510 C   ;    fax:   (631) 344-3253
Upton, NY 11973-5000

*************************************************************

Attachment: PrMon_wtime_vs_vmem_rss_with_output.png
Description: PNG image

Attachment: PrMon_wtime_vs_vmem_rss_no_output.png
Description: PNG image

Attachment: PrMon_wtime_vs_rss_with_output.png
Description: PNG image