 28 Aug 2008, Konstantin Olchanski, Info, triumf/t2k midas updates
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Following changes to midas produced from the TRIUMF T2K project have been
committed to svn:
1) cm_shutdown() will now SIGKILL clients that cannot be stopped via normal
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07 Aug 2020, Konstantin Olchanski, Info, update of MYSQL history documentation
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I updated the documentation for setting up a MYSQL (MariaDB) database for
recording MIDAS history: https://midas.triumf.ca/MidasWiki/index.php/History_System#Write_MYSQL-history_events
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19 May 2021, Konstantin Olchanski, Info, update of event buffer code
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a big update to the event buffer code was merged today.
two important bug fixes:
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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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08 Jun 2006, Konstantin Olchanski, Bug Fix, updated vmicvme driver
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I commited the latest VMIC VME driver we use at TRIUMF. It has working support
for D32 and D64 DMA and can move data from the SIS3820 multiscaler through the
MIDAS frontend at > 30 Mbytes/sec on our VMICVME-7805 machines. The actual DMA
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27 Nov 2015, Konstantin Olchanski, Info, updated: note on midas history
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(update: resolve all FIXMEs, document the breakup of "structured banks")
This note documents the workings of the midas history.
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26 Jul 2003, Konstantin Olchanski, , use "odbedit -C" to connect to corrupted ODB
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Add switch "-C" to odbedit to allow it to connect to corrupted ODB. Then,
depending on corruption, the user can manually remove or correct the
corrupted entries. Also, some corruption is automatically fixed by "odbedit"
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25 Nov 2004, chris pearson, Forum, use of assert in mhttpd
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We've had mhttpd aborting regularly since upgrading from midas-1.9.3. This
happens during elog queries, and is due to an elog file that was incorrectly
modified by hand. The modification to the file occurred 6 months ago.
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 14 Dec 2004, Konstantin Olchanski, Forum, use of assert in mhttpd
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> We've had mhttpd aborting regularly since upgrading from midas-1.9.3. This
> happens during elog queries, and is due to an elog file that was incorrectly
> modified by hand.
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29 Dec 2010, Konstantin Olchanski, Bug Report, use of nested locks in MIDAS
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A "nested" or "recursive" lock is a special type of lock that permits a lock holder to lock the same resources again and again, without deadlocking on itself.
They are
very useful, but tricky to implement because most system lock primitives (SYSV semaphores, POSIX mutexes, etc) do not permit nested locks, so all the logic |
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29 Sep 2020, Amy Roberts, Forum, using python client to start and stop run
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I'm using a python client to start and stop runs, and the following code *appears*
to set the MIDAS state to "Run"
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29 Sep 2020, Ben Smith, Forum, using python client to start and stop run
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The ODB variable "/Runinfo/State" is a symptom of starting/stopping a run, rather than the cause.
In C++, one uses `cm_transition()` to start/stop runs.
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06 Oct 2020, Konstantin Olchanski, Forum, using python client to start and stop run
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> The ODB variable "/Runinfo/State" is a symptom of starting/stopping a run, rather than the cause.
>
> In C++, one uses `cm_transition()` to start/stop runs.
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13 Nov 2014, Tim Gorringe, Forum, using single frontend with multiple "EQ_POLLED" equipments to generate different data streams
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We have a MIDAS frontend that provides both the readout of raw events
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13 Nov 2014, Pierre-Andre Amaudruz, Forum, using single frontend with multiple "EQ_POLLED" equipments to generate different data streams
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Hi Tim,
Multiple Polling equipment are possible, but you may have to balance the polling
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15 Apr 2017, Konstantin Olchanski, Bug Report, where to report bugs, stop form odbedit broken
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>
> What is the preferred channel to report potential bugs (elog / bitbucket issues)?
>
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03 Oct 2023, Konstantin Olchanski, Bug Fix, wrong array size after loading xml or json file
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both the xml and the json decoders have a bug (fix pending). loading saved odb
from xml and json file did not truncate arrays in odb to the size of arrays in
the file. for example, if /example/double_array has size 20 in odb, but size 5
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30 May 2020, Gennaro Tortone, Bug Report, wrong run number
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Hi,
I build MIDAS and ROOTANA using same tag (midas-2020-03-a, rootana-2020-03-a):
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30 May 2020, Thomas Lindner, Bug Report, wrong run number
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Hi,
I fixed this particular case, so that I now I get the run number correctly.
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30 May 2020, Gennaro Tortone, Bug Report, wrong run number
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Hi,
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