 17 Aug 2022, Stefan Ritt, Bug Report, firefox hangs due to mhistory
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> Some of my histories are placed in an IFrame object. I eventually realized that my code fails
> when it tries to resize a history which is placed in an invisible IFrame. I resolved the issue
> by making sure that I am resizing plots only if they are in a visible IFrame.
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 21 May 2024, Nikolay, Bug Report, experiment from midas/examples 
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There are 2 bugs in midas/examples/experiment:
1) In fronted bank named "PRDC" is created for scaler event. But in analyzer
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16 May 2023, Konstantin Olchanski, Bug Report, excessive logging of http requests
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Our default configuration of apache httpd logs every request. MIDAS custom web pages can easily make a huge number of RPC calls creating a
huge log file and filling system disk to 100% capacity
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16 May 2023, Konstantin Olchanski, Bug Report, excessive logging of http requests
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> Our default configuration of apache httpd logs every request. MIDAS custom web pages can easily make a huge number of RPC calls creating a
> huge log file and filling system disk to 100% capacity
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16 May 2023, Stefan Ritt, Bug Report, excessive logging of http requests
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Maybe you remember the problems we had with a custom page in Japan loading it from TRIUMF. It took almost one minute since each RPC request took
about 1s round-trip. This got fixed by the modb* scheme where the framework actually collects all ODB variables in a custom page and puts them
into ONE rpc request (making the path an actual array of paths). That reduced the requests from 100 to 1 in the above example. Maybe the same
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02 Aug 2023, Konstantin Olchanski, Bug Report, excessive logging of http requests
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> > Our default configuration of apache httpd logs every request. MIDAS custom web pages can easily make a huge number of RPC calls creating a
> > huge log file and filling system disk to 100% capacity
> perhaps use existing logrotate, add limit on file size (size) and limit of 2 old log files (rotate).
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03 Aug 2023, Konstantin Olchanski, Bug Report, excessive logging of http requests
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> > > Our default configuration of apache httpd logs every request. MIDAS custom web pages can easily make a huge number of RPC calls creating a
> > > huge log file and filling system disk to 100% capacity
> > perhaps use existing logrotate, add limit on file size (size) and limit of 2 old log files (rotate).
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14 Aug 2023, Konstantin Olchanski, Bug Report, excessive logging of http requests
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> Our default configuration of apache httpd logs every request.
> MIDAS custom web pages can easily make a huge number of RPC calls creating a
> huge log file and filling system disk to 100% capacity.
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16 Aug 2023, Konstantin Olchanski, Bug Report, excessive logging of http requests
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> > Our default configuration of apache httpd logs every request.
> > MIDAS custom web pages can easily make a huge number of RPC calls creating a
> > huge log file and filling system disk to 100% capacity.
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17 Aug 2023, Konstantin Olchanski, Bug Report, excessive logging of http requests
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> > > Our default configuration of apache httpd logs every request.
> > > MIDAS custom web pages can easily make a huge number of RPC calls creating a
> > > huge log file and filling system disk to 100% capacity.
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13 Jun 2016, Konstantin Olchanski, Bug Fix, example ssl certificate removed
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I removed the example ssl certificate from the midas git repository (ssl_cert.pem). Now every midas
installation must generate their own certificate - because to have any security at all each encryption
private key has to be unique (and it has to be secret).
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17 Jun 2003, Stefan Ritt, , example experiment makefile for NT
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I have added ROOT support to midas\examples\experiment\makefile.nt. To
compile the example experiment under Windows, one needs
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27 Feb 2007, Piotr Zolnierczuk, Forum, event builder scalability
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Hi there:
I have a question if there's anybody out there running MIDAS with event builder
that assembles events from more that just a few front ends (say on the order of
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27 Feb 2007, Stefan Ritt, Forum, event builder scalability
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> Hi there:
> I have a question if there's anybody out there running MIDAS with event builder
> that assembles events from more that just a few front ends (say on the order of
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27 Feb 2007, John M O'Donnell, Forum, event builder scalability
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At Los Alamos, we have 15+1 frontends - the 15 between them read about 2 or 3
TB/hour and reduce it to 1 to 5 GB/hour which is then sent to the mevb on a 17th
computer. The 16th frontend handles deadtime issues and scalers (small data rate).
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27 Feb 2007, Stefan Ritt, Forum, event builder scalability
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> Our bottle neck is (a) compactPCI backplane reading data from waveform digitizers
> to the frontend CPUs and (b) CPU power on the frontend CPUs to analyzer the waveforms.
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02 Mar 2007, Kevin Lynch, Forum, event builder scalability
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> Hi there:
> I have a question if there's anybody out there running MIDAS with event builder
> that assembles events from more that just a few front ends (say on the order of
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03 Mar 2007, Piotr Zolnierczuk, Forum, event builder scalability
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Hi all,
thank you for all responses.
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03 Mar 2007, Stefan Ritt, Forum, event builder scalability
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> It seems that there's no problem running MIDAS with event builder assembling
> data from ~10 front-ends. How about ~100? One possible solution is to have a
> multi-tiered architecture.
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21 Jul 2019, Konstantin Olchanski, Info, error handling is hard
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Happy summer to everybody.
When programming in general, and when programming MIDAS, there is always a struggle
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