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Entry  Sun Dec 8 20:48:29 2019, rana, Configuration, Computers, Megatron: starts up grade 
    Reply  Wed Dec 11 22:01:24 2019, rana, Configuration, Computers, Megatron: starts up grade 
       Reply  Wed Jan 22 19:17:20 2020, gautam, Configuration, Computers, Megatron: starts up grade 
          Reply  Thu Jan 23 15:32:42 2020, gautam, Configuration, Computers, Megatron: starts up grade 
             Reply  Mon Jan 27 18:16:30 2020, gautam, Configuration, Computers, Sluggish megatron? 
                Reply  Tue Jan 28 15:39:04 2020, gautam, Configuration, Computers, Sluggish megatron? 
                   Reply  Tue Jan 28 17:36:45 2020, gautam, Configuration, Computers, Local EPICS7.0 installed on megatron 
Message ID: 15159     Entry time: Mon Jan 27 18:16:30 2020     In reply to: 15145     Reply to this: 15164
Author: gautam 
Type: Configuration 
Category: Computers 
Subject: Sluggish megatron? 

I've also been noticing that the IMC Autolocker scripts are running rather sluggishly on Megatron recently. Some evidence - on Feb 11 2019, the time between the mcup script starting and finishing is ~10 seconds (I don't post the raw log output here to keep the elog short). However, post upgrade, the mean time is more like ~45-50 seconds. Rana mentioned he didn't install any of the modern LIGO software tools post upgrade, so maybe we are using some ancient EPICS binaries. I suspect the cron job for the burt snapshot is also just timing out due to the high latency in channel access. Rana is doing the software install on the new rossa, and once he verifies things are working, we will try implementing the same solution on megatron. The machine is an old Sun Microsystems one, but the system diagnostics don't signal any CPU timeouts or memory overflows, so I'm thinking the problem is software related...

Quote:

The burt snapshotting is still not so reliable - for whatever reason, the number of snapshot files that actually get written looks random. For example, the 14:19 backup today got all the snaps, but 15:19 did not. There are no obvious red flags in either the cron job logs or the autoburt log files. I also don't see any clues when I run the script in a shell. It'll be good if someone can take a look at this.

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