 23 Sep 2010, Stefan Ritt, Info, Another example of a JavaScript midas page 
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Please find attached another example of a JavaScript (JS) page using the
ODBGet/Set functions.
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 24 Sep 2010, Konstantin Olchanski, Info, Example javascript midas page
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> > We had javascript ODBGet() and ODBSet() functions for some time now, permitting
> implementation of
> > "page-reload-free" "self-updating" web pages. I finally got around to put all
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24 Sep 2010, Stefan Ritt, Info, Example javascript midas page
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> The attached errors all seem to be from cut-and-paste line breaks in the long "document.writeln()" statements.
> When the page runs, there are no errors from Firefox and Safari.
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29 Oct 2010, Konstantin Olchanski, Info, mlogger.c 4858-4862 busted
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Please note that mlogger does not work (crashes on run start) starting with svn
rev 4858, fixed in svn 4862. If you have to use this busted version of mlogger,
the crash is fixed by update of history_midas.c to svn rev 4862 or set ODB
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02 Nov 2010, chris pearson, Info, mhttpd: Extra entries on status page
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A couple of experiments at triumf wanted certain important odb variables
displayed on their status page. (There was already the possibility to show the
run comment)
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15 Dec 2010, Stefan Ritt, Info, New source file structure of MSCB tree
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A long planned modification of the source file structure of the MSCB subsystem has been implemented. This is however only for those people who do actively
participate in micro controller programming with MSCB. The idea behind this is tha the central include file [B]mscbemb.h[/B] had a section for each new
project. So whenever a new project was added, this file had to be modified which is clumsy and hard to maintain. Therefore I took the project specific |
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16 Feb 2011, Konstantin Olchanski, Info, Notes on MIDAS history
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Some notes on the MIDAS history.
MIDAS documentation at
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16 Feb 2011, Konstantin Olchanski, Info, Notes on MIDAS history
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>
> 1) PerVariableHistory.
>
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28 Feb 2011, Konstantin Olchanski, Info, javascript example experiment
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I just committed a MIDAS example for using most mhttpd html and javascript functions: ODBGet(),
ODBSet(), ODBRpc() & co.
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20 Jun 2011, Stefan Ritt, Info, Javascript ODB interface revised
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The Javascript interface to the ODB has been revised. This extends the capabilities of custom web pages requesting data from the ODB. By grouping several
request together, the number of round-trips is minimized and the response time is reduced. Following functions are new or extended:
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21 Jun 2011, Stefan Ritt, Info, New MIDAS sequencer
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A new sequencer for starting and stopping runs has been implemented. Although it is till kind of in a preliminary phase, it is usable, so I would like to
share the syntax with you.
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27 Jun 2011, Konstantin Olchanski, Info, updated mhttpd history "export" function
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The mhttpd history "export" function has been converted to the new midas history
interface and should now work for SQL-based history systems. In the process,
improvements by Eoin Butler (CERN AD-5/ALPHA) were merged - adding a UNIX
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27 Jun 2011, Konstantin Olchanski, Info, midas shared memory changes
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A number of changes were made to the midas shared memory implementation for
Linux and MacOS:
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27 Jun 2011, Konstantin Olchanski, Info, mlogger lock for runNNN.mid.gz files
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By popular request, Stefan R. implemented a locking scheme for mlogger output files.
To use this function, set the mlogger ODB /Logger/Channels/NNN/Settings/Filename
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05 Jul 2011, Konstantin Olchanski, Info, midas shared memory changes
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> 2) the shared memory type used by an experiment is recorded in the file .SHM_TYPE.TXT.
An error with creating the file .SHM_TYPE.TXT was corrected in system.c svn rev 5125 - if file did not exist, it is
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11 Jul 2011, Konstantin Olchanski, Info, Make "STOP" run transition always succeed
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Over the years, there was some back-and-forth changes in what happens to run transitions when some
of the participants misbehave (do not respond to RPC calls, timeout, crash, etc).
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30 Jan 2012, Stefan Ritt, Info, IEEE Real Time 2012 Call for Abstracts
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Hello,
I'm co-organizing the upcoming Real Time Conference, which covers also the field of data acquisition, so it might be interesting for people working
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20 Jun 2012, Konstantin Olchanski, Info, lazylogger write to HADOOP HDFS
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I tried using the lazylogger "Disk" method to write into a HADOOP HDFS clustered filesystem and found a
number of problems. I ended up replacing the lazylogger lazy_copy() function that still uses former YBOS
code with a new lazy_disk_copy() function that uses generic fread/fwrite. Also fixed the situation where
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20 Jun 2012, Konstantin Olchanski, Info, midas vme benchmarks
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I am recording here the results from a test VME system using two VF48 waveform digitizers and a 64-bit
dual-core VME processor (V7865). VF48 data suppression is off, VF48 modules set to read 48 channels,
1000 ADC samples each. mlogger data compression is enabled (gzip -1).
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20 Jun 2012, Konstantin Olchanski, Info, midas vme benchmarks
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> I am recording here the results from a test VME system using two VF48 waveform digitizers
Note 1: data compression is about 89% (hence "data to disk" rate is much smaller than the "data from VME" rate)
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