 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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23 Jan 2009, Renee Poutissou, Info, Subrun scheme implemented
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Hi Stefan,
My colleague Tobi Raufer (tobi.raufer@stfc.ac.uk) has tested this new implementation and
sent me the following questions:
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25 Jan 2009, Stefan Ritt, Info, Subrun scheme implemented
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[quote="Renee Poutissou"]I have tested the new subrun functionality a bit more and I have two observations. First, it seems to work on a basic level, i.e.
subruns are created, which are equal in size. However, I can't relate their size to the byte limit set in the ODB.[/quote]
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18 Feb 2009, Konstantin Olchanski, Info, odbc sql history mlogger update
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> mhttpd and mlogger have been updated with potentially troublesome changes.
> These new features are now available:
> - a "feature complete" implementation of "history in an SQL database".
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07 May 2009, Konstantin Olchanski, Info, midas misc timeout fixes
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(catching up on recent changes from t2k and pienu)
Various timeout problems fixed:
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07 May 2009, Konstantin Olchanski, Info, RPC.SHM gyration
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When using remote midas clients with mserver, you may have noticed the zero-size .RPC.SHM files
these clients create in the directory where you run them. These files are associated with the semaphore
created by the midas rpc layer (rpc_call) to synchronize rpc calls between multiple threads. This
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07 May 2009, Konstantin Olchanski, Info, mhttpd now uses mtransition
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mhttpd function for starting and stopping runs now uses cm_transition(DETACH) which spawns an
external helper program called mtransition to handle the transition sequencing. This helps with the old
problem of looking at a blank screen for a long time if some frontends take a long time to process run
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