 07 May 2009, Konstantin Olchanski, Info, midas misc timeout fixes
|
(catching up on recent changes from t2k and pienu)
Various timeout problems fixed:
|
|
07 May 2009, Konstantin Olchanski, Info, RPC.SHM gyration
|
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
|
|
07 May 2009, Konstantin Olchanski, Info, mhttpd now uses mtransition
|
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
|
|
07 May 2009, Konstantin Olchanski, Info, SQL history documentation
|
Documentation for writing midas history data to SQL (mysql) is now documented in midas doxygen files
(make dox; firefox doxfiles/html/index.html). The corresponding logger and mhttpd code has been
committed for some time now and it is used in production environment by the t2k/nd280 slow controls
|
 15 May 2009, Konstantin Olchanski, Info, midas misc timeout fixes
|
> - cm_transition() timeouts now settable from ODB (/experiment/transition timeout, transition connect timeout). Rev 4479
transition connect timeout was actually only half of that specified because of an error in computing timeout arguments to the select() system
|
|
15 May 2009, Konstantin Olchanski, Info, midas misc timeout fixes
|
> - cm_transition() timeouts now settable from ODB (/experiment/transition timeout, transition connect timeout). Rev 4479
transition connect timeout was actually only half of that specified because of an error in computing timeout arguments to the select() system
|
|
21 May 2009, Konstantin Olchanski, Info, mhttpd now uses mtransition
|
> 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.
>
|
|
02 Jun 2009, Konstantin Olchanski, Info, mhttpd now uses mtransition
|
> > 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.
>
|
|
02 Jun 2009, Konstantin Olchanski, Info, RPC.SHM gyration
|
> 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
|
|
04 Jun 2009, Stefan Ritt, Info, RPC.SHM gyration
|
> Right now, MIDAS does not have an abstraction for "local multi-thread mutex" (i.e. pthread_mutex & co) and mostly uses global semaphores
> for this task (with interesting coding results, i.e. for multithreaded locking of ODB). Perhaps such an abstraction should be introduced?
|
|
26 Jun 2009, Konstantin Olchanski, Info, mhttpd now uses mtransition
|
> > > 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.
|
|
10 Aug 2009, Konstantin Olchanski, Info, misc changes from PIENU and T2K
|
FYI - committed the last changes from TRIUMF DAQ systems for PIENU and T2K/ND280 FGD and TPC
tests:
|
|
10 Aug 2009, Konstantin Olchanski, Info, misc changes from PIENU and T2K
|
> FYI - committed the last changes from TRIUMF DAQ systems for PIENU and T2K/ND280 FGD and TPC
> tests:
> svn rev 4541
|
|
21 Sep 2009, Stefan Ritt, Info, New feature: Stop run after a certain time
|
A new feature has been implemented in revision 4561 which allows runs with a
certain duration. To use this, one has to set the variaable
|
|
22 Sep 2009, Stefan Ritt, Info, New feature: Stop run after a certain time
|
> A new feature has been implemented in revision 4561 which allows runs with a
> certain duration. To use this, one has to set the variaable
>
|
|
11 Oct 2009, Konstantin Olchanski, Info, SQL history documentation
|
> Documentation for writing midas history data to SQL (mysql) is now documented in midas doxygen files
> (make dox; firefox doxfiles/html/index.html). The corresponding logger and mhttpd code has been
> committed for some time now and it is used in production environment by the t2k/nd280 slow controls
|
|
20 Nov 2009, Konstantin Olchanski, Info, RPC.SHM gyration
|
> 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.
|
01 Dec 2009, Stefan Ritt, Info, Redesign of status page links 
|
The custom and alias links in the standard midas status page were shown as HTML
links so far. If there are many links with names having spaces in their names,
it's a bit hard to distinguish between them. Therefore, they are packed now into
|
|
04 Dec 2009, Stefan Ritt, Info, Redesign of status page columns
|
Since the column on the main midas status page with fraction of analyzed events is
barely used, I decided to drop it. Anyhow it does not make sense for all slow
control events. If this feature is required in some experiment, I propose to move it
|
|
04 Dec 2009, Stefan Ritt, Info, Custom page showing ROOT analyzer output
|
Many midas experiments work with ROOT based analyzers today. One problem there is that the graphical output of the root analyzer can only be seen through
the X server and not through the web. At the MEG experiment, we solved this problem in an elegant way: The ROOT analyzer runs in the background, using
a "virtual" X server called Xvfb. It plots its output (several panels) normally using this X server, then saves this panels every ten seconds into GIF |