[LON-CAPA-admin] 2.11 construction space
Stuart Raeburn
raeburn at msu.edu
Wed Jul 9 12:03:13 EDT 2014
Hi Hon-Kie,
> Yes, they are the problems in openstax-CollegePhysics library. I have added
> you as co-author so can poke around. Just view the
> openstax-CollegePhysics/02_Kinematics/01_Displacement.problem - it took
> more than 30 s sometimes.
Thank you for providing co-author access for me in the dev cluster for
openstax-CollegePhysics:fsu.
I copied the XML for
/priv/fsu/openstax-CollegePhysics/02_Kinematics/01_Displacement.problem (and
also the XML in the two .library files which are imported into the
problem) and created equivalent files in my Authoring Space on the MSU
dev library server.
When I compare rendering times on the MSU dev server (32 bit) for my
copy of 01_Displacement.problem in Authoring Space on the same
hardware, both before and after upgrade to 2.11.0, I find similar
rendering times (about 6 s), with 2.11.0 typically faster than 2.10.1
by about 10%.
Note: comparing rendering times displaying the published resource
(/res/ ...) versus display in Authoring Space (/priv/ ...) I was
typically seeing 2s versus 6s, because in Authoring Space,
Apache::lonhomework::renderpage() will render for three targets:
grade, web, and answer, whereas for resource space, rendering is for
just the one target (web).
I used Time::HiRes with a number of checkpoints in lonhomework.pm and
see no significant difference between 2.10.1 and 2.11.0 when rendering
the 01_Displacement.problem resource, which you report as taking up to
30s to render on your dev server.
I used the same checkpoints to analyze rendering times for 2.10.1 and
2.11.0 on a VM running CentOS 6 (64 bit) for 01_Displacement.problem,
and found similar rendering times, of about 2s, for display in
Authoring Space (with 2.11.0 about 10% faster than 2.10.1).
Note: after updating to gnuplot 4.4 (for 2.11.0) I needed to patch
2.10.1 (when I reverted to that LON-CAPA version) -- see:
http://mail.lon-capa.org/pipermail/lon-capa-admin/2014-July/002871.html -- for
the plot to be generated.
Stuart Raeburn
LON-CAPA Academic Consortium
Quoting "H. K. Ng" <hkng at fsu.edu>:
> Hi Stuart,
>
> Thanks for your response.
>
>
>
> On Wed, Jul 2, 2014 at 6:08 PM, Stuart Raeburn <raeburn at msu.edu> wrote:
>
>> Hi Hon-Kie,
>>
>> > The latest release version takes a long time (~30 s) to render a problem
>> in
>> > the construction space. 2.10 takes only a couple of seconds.
>>
>> I assume this is for your development server (tycho) in the dev
>> cluster, as your production library server is still running 2.10.1
>>
>
> Yes, I am testing it out first before installing 2.11 on the production
> servers.
>
>
>>
>> Were you ever able to resolve the yum update issues on your dev server
>> caused by epel repo conflicts?
>>
>
> Leaving the disable flag did the trick.
>
>
>>
>> The construction space rendering behavior you report has not been my
>> experience on MSU single domain library servers in both the production
>> cluster and dev cluster. When I compare rendering times for the same
>> problem in Authoring Space on the same hardware, both before and after
>> upgrade to 2.11.0, I find rendering times the same (about 2 s).
>>
>> Has the problem which you find takes ~30 s to render been published?
>>
>
> Yes, they are the problems in openstax-CollegePhysics library. I have added
> you as co-author so can poke around. Just view the
> openstax-CollegePhysics/02_Kinematics/01_Displacement.problem - it took
> more than 30 s sometimes.
>
>
>>
>> If so, I could replicate the resource, and then measure rendering
>> times on the MSU development server, and debug, if I also found
>> anomalous (long) rendering times.
>>
>> What files (and return codes) do you find listed in the Apache
>> ssl_access_log log file when rendering the problem?
>>
>
> The log files have the following output.
>
> ssl_access.log shows the following:
>
> 146.xx - openstax-CollegePhysics [02/Jul/2014:18:42:04 -0400] "POST
> /adm/createuser HTTP/1.1" 200 18798
> 146.xx - openstax-CollegePhysics [02/Jul/2014:18:48:57 -0400] "GET
> /priv/fsu/openstax-CollegePhysics/ HTTP/1.1" 200 69158
> 146.xx - openstax-CollegePhysics [02/Jul/2014:18:49:12 -0400] "GET
> /priv/fsu/openstax-CollegePhysics/02_Kinematics/ HTTP/1.1" 200 169377
> 128.xx - openstax-CollegePhysics [02/Jul/2014:18:49:18 -0400] "POST
> /priv/fsu/openstax-CollegePhysics/02_Kinematics/01_Displacement.problem?inhibitmenu=yes
> HTTP/1.1" 200 2516
> 128.xx - openstax-CollegePhysics [02/Jul/2014:18:49:23 -0400] "POST
> /priv/fsu/openstax-CollegePhysics/ToolBox/ReferenceKit.library?inhibitmenu=yes
> HTTP/1.1" 200 -
> 128.xx - openstax-CollegePhysics [02/Jul/2014:18:49:24 -0400] "POST
> /priv/fsu/openstax-CollegePhysics/ToolBox/gnuplotRoutines.library?inhibitmenu=yes
> HTTP/1.1" 200 -
>
> ssl_request.log shows the following:
>
> [02/Jul/2014:18:42:04 -0400] 146.201.38.158 TLSv1.2 DHE-RSA-AES128-SHA
> "POST /adm/createuser HTTP/1.1" 18798
> [02/Jul/2014:18:48:57 -0400] 146.201.38.158 TLSv1.2 DHE-RSA-AES128-SHA "GET
> /priv/fsu/openstax-CollegePhysics/ HTTP/1.1" 69158
> [02/Jul/2014:18:49:12 -0400] 146.201.38.158 TLSv1.2 DHE-RSA-AES128-SHA "GET
> /priv/fsu/openstax-CollegePhysics/02_Kinematics/ HTTP/1.1" 169377
> [02/Jul/2014:18:49:18 -0400] 128.186.7.100 TLSv1.2
> DHE-RSA-AES256-GCM-SHA384 "POST
> /priv/fsu/openstax-CollegePhysics/02_Kinematics/01_Displacement.problem?inhibitmenu=yes
> HTTP/1.1" 2516
> [02/Jul/2014:18:49:23 -0400] 128.186.7.100 TLSv1.2
> DHE-RSA-AES256-GCM-SHA384 "POST
> /priv/fsu/openstax-CollegePhysics/ToolBox/ReferenceKit.library?inhibitmenu=yes
> HTTP/1.1"
>
>
> error.log - lots of entries like the ones below.
>
> Bareword found where operator expected at (eval 7341) line 1, near
> "@E_TRIE_MAXBUF"
> (Missing operator before E_TRIE_MAXBUF?)
> Bareword found where operator expected at (eval 7343) line 1, near
> "%E_TRIE_MAXBUF"
> (Missing operator before E_TRIE_MAXBUF?)
>
>
>
>
>
>> Looking at diagnostics for tycho it appears that you still have rev
>> 1.152.2.2 of /home/httpd/html/res/adm/includes/default_homework.lcpm
>> installed (i.e., the version included with 2.10.1) instead of rev.
>> 1.169 (the version shipped with 2.11.0). Is there a reason for that?
>>
>
> Hum, not sure why. I run UPDATE so not sure why the old file was not
> replaced. I replaced it manually but do not see any improvement.
>
> Thanks again,
> -hk
>
>
>
>
>
>>
>>
>> Stuart Raeburn
>> LON-CAPA Academic Consortium
>>
>>
>> Quoting "H. K. Ng" <hkng at fsu.edu>:
>>
>> > Hi,
>> >
>> > The latest release version takes a long time (~30 s) to render a problem
>> in
>> > the construction space. 2.10 takes only a couple of seconds. Any reason
>> why
>> > it takes so long? Is there any configurations that can be changed to
>> speed
>> > it up?
>> >
>> > Thanks,
>> > -hk
>> >
>>
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