 17 Oct 2008, Konstantin Olchanski, Info, mlogger async transitions, etc
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As we were looking into problems with starting and stopping runs in one of our
daq systems, we found that the mlogger does something differently compared to
mhttpd and odbedit. Starting and stopping runs from mhttpd and odbedit works
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 18 Oct 2008, Stefan Ritt, Info, mlogger async transitions, etc
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> I suspect mlogger uses ASYNC transactions exactly to avoid
> this type of deadlock (mlogger used ASYNC transactions since svn revision 2, the
> beginning of time).
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18 Oct 2008, Konstantin Olchanski, Info, make linux32 & co
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The Makefile targets for crosscompiling MIDAS are now documented in the MIDAS
Doxygen documentation:
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22 Oct 2008, Konstantin Olchanski, Info, mscb timeouts and retries
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A new set of functions was added to mscb.h to adjust mscb timeouts and retries to better match specific
applications:
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28 Oct 2008, Stefan Ritt, Info, mscb timeouts and retries
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> A new set of functions was added to mscb.h to adjust mscb timeouts and retries to better match specific
> applications:
>
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06 Nov 2008, Konstantin Olchanski, Info, midas elog outage
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Around Wednesday Noon, there was a power outage at triumf (loss of ups power in the triumf
computing center) and after rebooting ladd00, https/ssl access stopped working with a complaint
about mismatching server name and ssl certificate name. This configuration used to work, so one of the
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20 Nov 2008, Jimmy Ngai, Info, Recommended platform for running MIDAS
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Dear All,
Is there any recommended platforms for running MIDAS? Have anyone encountered
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20 Nov 2008, Stefan Ritt, Info, Recommended platform for running MIDAS
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> Dear All,
>
> Is there any recommended platforms for running MIDAS? Have anyone encountered
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26 Nov 2008, Jimmy Ngai, Info, Send email alert in alarm system
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Dear All,
We have a temperature/humidity sensor in MIDAS now and will add a liquid level
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26 Nov 2008, Stefan Ritt, Info, Send email alert in alarm system
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> We have a temperature/humidity sensor in MIDAS now and will add a liquid level
> sensor to MIDAS soon. We want the operators to get alerted ASAP when the
> laboratory environment or the liquid level reached some critical levels. Can
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27 Nov 2008, Konstantin Olchanski, Info, lazylogger updated
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lazylogger was updated to improve handling of the list of runs still on disk
(odb /Lazy/xxx/List).
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27 Nov 2008, Konstantin Olchanski, Info, Fixed mlogger crash, was Per-variable history implementation in the mlogger
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> revision 4142+4143 are minor fixes, refactoring (switch the code to use helper
> functions) and implementation of history for structured banks
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12 Dec 2008, Jimmy Ngai, Info, Custom page which executes custom function
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Dear All,
How can I add a button at the top of the "Status" webpage which will show a
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14 Dec 2008, Stefan Ritt, Info, Custom page which executes custom function
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> How can I add a button at the top of the "Status" webpage which will show a
> page similar to the "CNAF" one after I click on it? and how can I make a
> custom page similar to "CNAF" which allow me to call some custom funtions? I
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01 Jan 2009, Konstantin Olchanski, Info, odb "hot link" magic explored
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Here are my notes on the MIDAS ODB "hot link" function. Perhaps others can find them useful.
Using db_open_record(key,function), the user can tell MIDAS to call the specified user function when
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01 Jan 2009, Konstantin Olchanski, Info, Custom page which executes custom function
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> How can I add a button at the top of the "Status" webpage which will show a
> page similar to the "CNAF" one after I click on it? and how can I make a
> custom page similar to "CNAF" which allow me to call some custom funtions? I
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13 Jan 2009, Stefan Ritt, Info, Custom page which executes custom function
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The UDP connection you mention is only used locally for inter-process communication. When I implemented that, I
made extensive tests and found that there is never a packet being dropped. This happens for UDP only if the packet
goes over a physical network. Maybe this is different in modern Linux versions, so one should double check this
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14 Jan 2009, Stefan Ritt, Info, odb "hot link" magic explored
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[quote="KO"]note 1: I do not completely understand the ss_suspend_xxx() stuff. The best I can tell is it creates a number of udp sockets bound to the local
host and at least one udp rpc receive socket ultimately connected to the cm_dispatch_rpc() function.[/quote]
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17 Jan 2009, Konstantin Olchanski, Info, mhttpd, mlogger updates
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mhttpd and mlogger have been updated with potentially troublesome changes.
Before using these latest versions, please make a backup of your ODB. This is
svn revisions 4434 (mhttpd.c) and 4435 (mlogger.c).
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20 Jan 2009, Stefan Ritt, Info, Subrun scheme implemented
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A new "subrun" scheme has been implemented in mlogger to split a big data file into several individual data files. This feature might be helpful if a data
file from a single run gets too large (>4 GB for example) and if shorter runs are not wanted for efficiency reasons. The scheme works as follows:
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