[LON-CAPA-admin] Issues

[Lucas, Mark]

I'm having some issues here I may need help with.

We're working towards finals starting tomorrow, and last night I had one of my machines
go catatonic regarding LON-CAPA and httpd. I was still able to get in via ssh.
This seems to be correlated with memory problems.

I restarted LON-CAPA (loncontrol and httpd) on that machine and did the same on
my balancer, and it seemed to be fine.

Just about an hour ago I started having problems again. There seems to be a significant
increase in memory usage - the slope changed pretty dramatically as usage picked up.

While the machines are being used pretty steadily, I'm wondering if there's anything regarding
downloading of large pdf files or the like that may somehow be causing grief. They're not
working on homework as much as they are pouring over lecture notes.

I also found the lond.log file on my library to be huge (3Gb+?) last night. While there typically
isn't much in lond.log, and I have debug set to zero, I'm getting a bunch of messages like those shown
below. Is this a sign of poor communications between the machines developing under the load?
Is debug somehow getting turned on?

I'm at a bit of a loss for the behavior, and I definitely have some students pissed at me right
now.

Mark


============================================================
Tue Nov 15 05:26:57 2011 (21584): Command received: sethost, encoded = 0
Tue Nov 15 05:26:57 2011 (21584): Matched dispatch hash: mustencode: 0 ClientType 1Tue Nov 15 05:26:57 2011 (21584): Dispatching to handler sethost oucapa2
Tue Nov 15 05:26:57 2011 (21584): Request was sethost:oucapa2  Reply was ok
Tue Nov 15 05:26:57 2011 (21584): get_request: Request = ekey

Tue Nov 15 05:26:57 2011 (21584): Main: Got ekey
Tue Nov 15 05:26:57 2011 (21584): process_request: ekey

Tue Nov 15 05:26:57 2011 (21584): Command received: ekey, encoded = 0
Tue Nov 15 05:26:57 2011 (21584): Matched dispatch hash: mustencode: 0 ClientType 3Tue Nov 15 05:26:57 2011 (21584): Dispatching to handler ekey
Tue Nov 15 05:26:57 2011 (21584): Request was ekey:  Reply was 7643ACBACEB8A7BAE8DBCE811563Tue Nov 15 05:26:57 2011 (21584): get_request: Request = sethost:oucapa2:put:ohiou:OUp200lib:nohist_resevaldata:author%2fmeap%2fcalculus%2fprecalcreview%2ftrig02%2dRadiansToDegrees%2eprobl
em___ohiou%2fOUp200lib%2fmath%2ftriangle_comp1%2eproblem___comefrom=1

Tue Nov 15 05:26:57 2011 (21584): Main: Got sethost:oucapa2:put:ohiou:OUp200lib:nohist_resevaldata:author%2fmeap%2fcalculus%2fprecalcreview%2ftrig02%2dRadiansToDegrees%2eproblem___ohiou%2f
OUp200lib%2fmath%2ftriangle_comp1%2eproblem___comefrom=1

Tue Nov 15 05:26:57 2011 (21584): process_request: put:ohiou:OUp200lib:nohist_resevaldata:author%2fmeap%2fcalculus%2fprecalcreview%2ftrig02%2dRadiansToDegrees%2eproblem___ohiou%2fOUp200lib
%2fmath%2ftriangle_comp1%2eproblem___comefrom=1

Tue Nov 15 05:26:57 2011 (21584): Command received: put, encoded = 0
Tue Nov 15 05:26:57 2011 (21584): Matched dispatch hash: mustencode: 0 ClientType 1
Tue Nov 15 05:26:57 2011 (21584): Dispatching to handler put ohiou:OUp200lib:nohist_resevaldata:author%2fmeap%2fcalculus%2fprecalcreview%2ftrig02%2dRadiansToDegrees%2eproblem___ohiou%2fOUp
200lib%2fmath%2ftriangle_comp1%2eproblem___comefrom=1
Tue Nov 15 05:26:57 2011 (21584): Request was put:ohiou:OUp200lib:nohist_resevaldata:author%2fmeap%2fcalculus%2fprecalcreview%2ftrig02%2dRadiansToDegrees%2eproblem___ohiou%2fOUp200lib%2fma
th%2ftriangle_comp1%2eproblem___comefrom=1  Reply was ok
Tue Nov 15 05:27:09 2011 (21508): get_request: Request = exit

Tue Nov 15 05:27:09 2011 (21508): Main: Got exit
========================================================================



--
Mark Lucas  email: lucasm at ohiou.edu<mailto:lucasm at ohiou.edu>
252D Clippinger Lab phone: (740)597-2984
Department of Physics and Astronomy fax: (740)593-0433
Ohio University
Athens, OH 45701

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