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Message ID: 9022     Entry time: Sun Aug 18 17:56:16 2013
Author: rana 
Type: Summary 
Category: CDS 
Subject: MEDM Screen CPU Usages 

I noticed at LLO (?) that the LSC screen there uses up ~25-30% of the CPU time on a single core for the control room iMac workstations - this seems excessive.

Here is an accounting of CPU usage percentages for some of our screens:

 

Screen Name CPU (%)
LSC_OVERVIEW 7
ALS_OVERVIEW 0
ALS 1
SUS_SUMMARY 0
IOO_WFS_MASTER 0.3
OPLEV_MASTER 0.5

These were measured using the program 'glances' on rosalba. MEDM running with only the sitemap used up 0.9% of a CPU. With the screens running, the fluctuation from sample to sample could be ~ +/- 0.5%. While the LSC screen seems to be the biggest pig, it is only big in comparison to small pigs. Certainly this pig has gotten bigger after getting sent to Louisiana.

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