 20 Dec 2012, Stefan Ritt, Bug Report, MIDAS does not function correctly on F17
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If is not so easy to get out of zlib how many bytes have been written actually. I used an undocumented function,
which breaks down on 64-bit systems.
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09 Jan 2013, Stefan Ritt, Bug Report, Outputting ADC and TDC data into ROOT tree with the MIDAS SVN Revision:5347.
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Dear Bill,
the Midas analyzer "mana.c" is currently not maintained. At PSI we use the ROME framework (which might be too complicated for a
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01 Feb 2013, Stefan Ritt, Forum, analyzer cannot connect to the statistics database
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> The simplest thing is probably to delete all files .[A-Z]*.SHM in the odb directory (the
> one you specified in /etc/exptab).
> This wipes the ODB, shared memory and all the other obscure stuff, giving you a clean,
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06 Feb 2013, Stefan Ritt, Info, Compression benchmarks
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I redid the tests from Konstantin for our MEG experiment at PSI. The event structure is different, so it
is interesting how the two different experiments compare. We have an event size of 2.4 MB and a trigger
rate of ~10 Hz, so we produce a raw data rate of 24 MB/sec. A typical run contains 2000 events, so has a
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11 Feb 2013, Stefan Ritt, Forum, send_tcp error
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> I am getting a series of errors from MIDAS that I do not understand, so I hope
> someone can help me figure this out.
>
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12 Feb 2013, Stefan Ritt, Forum, send_tcp error
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Ok, now the picture is clearer. I have however no idea what the real problem is. The number of concurrent programs in midas is 64 as defined in midas.h
(MAX_CLIENTS) so that should not be the problem. In our experiment we run 10 front-ends (but
on 10 different machines) without problems. Other experiments used 27 front-ends.
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14 Feb 2013, Stefan Ritt, Info, Review of github and bitbucket
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Let me add my five cents:
We use bitbucket now since two months at PSI, and are very happy with it.
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03 Apr 2013, Stefan Ritt, Info, Review of github and bitbucket
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> * "git bisect" for finding which commit introduced a (reproducible) bug.
I did not know this command, so I read about it. This IS WONDERFUL! I had once (actually with MSCB) the case that a bug was introduced i the last 100
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11 Apr 2013, Stefan Ritt, Forum, Persistent ipcrm error
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[quote="Thorsten Lux"]In addition now I cannot start anymore the mlogger from the web interface but only manually. However, I can stop it from the web interface.[/quote]
At least that one can be fixed easily. Each program has a certain command with which one can start it. This has to be put into the ODB under /Programs/<program>. |
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12 Apr 2013, Stefan Ritt, Forum, Persistent ipcrm error
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> Hi Stefan,
>
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12 Apr 2013, Stefan Ritt, Forum, Persistent ipcrm error
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> [odb.c:6038:db_paste,ERROR] found string exceeding MAX_STRING_LENGTH
Ok, so here is what probably happened. Some user program wrote a long string into the ODB and somehow corrupted it. This corruption persists as long as |
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22 Jul 2013, Stefan Ritt, Info, MIDAS source code converted from SVN to GIT
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Konstantin forgot to tell people outside of TRIUMF how to get the newest version of MIDAS. Here it is:
$ git clone https://bitbucket.org/tmidas/midas.git
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13 Sep 2013, Stefan Ritt, Forum, MIDAS CITATION
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> Dear MIDAS programmers,
>
> I have been using your software in my lab (APC, Paris)
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 23 Sep 2013, Stefan Ritt, Info, Custom page header implemented 
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Due to popular request, I implemented a custom header for mhttpd. This allows to inject some HTML code
to be shown on top of the menu bar on all mhttpd pages. One possible application is to bring back the old
status line with the name of the current experiment, the actual time and the refresh interval.
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24 Sep 2013, Stefan Ritt, Info, mktime() and daylight savings time
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I vaguely remember that I had a similar problem with ELOG. The solution was to call tzset() at the beginning of the program. The man page says that
this function is called automatically by programs using time zones, but apparently it is not. Can you try that? There is also the TZ environment
variable and /etc/localtime. I never understood the details, but playing with these things can influence mktime() and localtime().
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24 Sep 2013, Stefan Ritt, Bug Report, mhttpd truncates string variables to 32 characters
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Actually this was no bug, but a missing feature. Strings were never meant to be extended via the web interface.
Now I added that feature to the current version. Please check it.
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24 Sep 2013, Stefan Ritt, Info, mktime() and daylight savings time
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> > I vaguely remember that I had a similar problem with ELOG. The solution was to call tzset() at the beginning of the program. The man page says that
> > this function is called automatically by programs using time zones, but apparently it is not. Can you try that? There is also the TZ environment
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24 Sep 2013, Stefan Ritt, Info, mktime() and daylight savings time
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> > > I vaguely remember that I had a similar problem with ELOG. The solution was to call tzset() at the beginning of the program. The man page says that
> > > this function is called automatically by programs using time zones, but apparently it is not. Can you try that? There is also the TZ environment |
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24 Sep 2013, Stefan Ritt, Bug Report, mhttpd truncates string variables to 32 characters
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> This is the jset code. The best I can tell it truncates string variables to the existing size in ODB:
>
> db_find_key(hDB, 0, str, &hkey)
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25 Oct 2013, Stefan Ritt, Bug Fix, fixed mlogger run auto restart bug
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> A problem existed in midas for some time: when recording long data sets of time (or event) limited runs
> with logger run auto restart set to "yes", the runs will automatically stop and restart as expected, but
> sometimes the run will stop and never restart and beam will be lost until the experiment operator on shift
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