 12 Feb 2025, Mark Grimes, Forum, TMFeRpcHandlerInterface::HandleEndRun when running offline on a Midas file
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Hi,
I have a manalyzer that uses a derived class of TMFeRpcHandlerInterface to communicate information to
Midas during online running. At the end of each run it saves out custom data in the
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 25 Mar 2025, Mark Grimes, Forum, TMFeRpcHandlerInterface::HandleEndRun when running offline on a Midas file
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Hi,
The question was about the TMFeRpcHandlerInterface, not the TARunObject interface. Derived classes of TARunObject do indeed work as expected in our
environment. We have worked around the issue by using an implementation of TARunObject as well as the (separate) implementation of
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26 Mar 2025, Mark Grimes, Forum, TMFeRpcHandlerInterface::HandleEndRun when running offline on a Midas file
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This was exactly the question, should I expect it to run? There's no point in the HandleBinaryRpc method offline, but there's an argument that the HandleBeginRun/HandleEndRun
methods have a use.
I have the answer and we have a workaround, thanks.
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04 Jun 2025, Mark Grimes, Bug Report, Memory leak in mhttpd binary RPC code
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Hi,
During an evening of running we noticed that memory usage of mhttpd grew to close to 100Gb. We think we've traced this to the following issue when making
RPC calls.
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07 Jun 2025, Mark Grimes, Bug Report, Memory leak in mhttpd binary RPC code 
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Hi,
We applied an intermediate fix for this locally and it seems to have fixed our issue. The attached plot shows the percentage memory use
on our machine with 128 Gb memory, as a rough proxy for mhttpd memory use. After applying our fix mhttpd seems to be happy using ~7% of the memory |
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15 Jun 2025, Mark Grimes, Bug Report, Memory leak in mhttpd binary RPC code
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Many thanks for the fix. We've applied and see better memory performance. We still have to kill and restart
mhttpd after a few days however. I think the official fix is missing this part:
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04 Jul 2025, Mark Grimes, Bug Report, Memory leaks in mhttpd
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Something changed in our system and we started seeing memory leaks in mhttpd again. I guess someone
updated some front end or custom page code that interacted with mhttpd differently.
I found a few memory leaks in some (presumably) rarely seen corner cases and we now see steady
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16 Sep 2024, Marius Köppel, Bug Report, Crash using ODB watch
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Hi all,
last week I was running MIDAS with the commit 3ad98c5. Today I updated MIDAS and now all my watch functions are crashing. Attached I have a minimal example |
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12 Jun 2019, Marius Koeppel, Forum, Strange JS array creation
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Hello everybody,
I have a strange JS behavior. In one of my frontends I create a key in the ODB with:
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24 Jun 2019, Marius Koeppel, Forum, Strange JS array creation
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> > for (i = 0; i < lines.length; i++) {
> > modbset("/Equipment/Switching/Variables/DATA_WRITE[" + String(i) + "]", parseInt(lines[i]));
> > }
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12 Feb 2020, Marius Koeppel, Forum, Difference between "Event Data Size" and "All Bank Size"
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Dear all,
we are trying to build Midas events on FPGAs and send them directly to the midas
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13 Feb 2020, Marius Koeppel, Forum, Writting Midas Events via FPGAs
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Dear all,
we creating Midas events directly inside a FPGA and send them off via DMA into the PC RAM. For reading out this RAM via Midas the FPGA sends as a pointer |
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20 Feb 2020, Marius Koeppel, ,
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We also agree and found the problem now. Since we build everything (MIDAS Event Header, Bank Header, Banks etc.) in the FPGA we had some struggle with
the MIDAS data format (http://lmu.web.psi.ch/docu/manuals/bulk_manuals/software/midas195/html/AppendixA.html). We thought that only the MIDAS Event needs |
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20 Feb 2020, Marius Koeppel, Forum, Writting Midas Events via FPGAs
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We also agree and found the problem now. Since we build everything (MIDAS Event Header, Bank Header, Banks etc.) in the FPGA we had some struggle with
the MIDAS data format (http://lmu.web.psi.ch/docu/manuals/bulk_manuals/software/midas195/html/AppendixA.html). We thought that only the MIDAS Event needs |
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23 Feb 2020, Marius Koeppel, Forum, Writting Midas Events via FPGAs
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> > We also agree and found the problem now.
>
> Good. what was wrong?
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28 May 2020, Marius Koeppel, Suggestion, ODB++ API - documantion updates and odb view after key creation
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Hello everybody,
I am really appreciate the development of the new odb++ API. So I directly started to rewrite the code for the Mu3e DAQ system.
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04 Jun 2020, Marius Koeppel, Suggestion, ODB++ API - documantion updates and odb view after key creation
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Hi Stefan,
your test program was only working for me after I changed the following lines inside the odbxx.cpp
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08 Jun 2020, Marius Koeppel, Suggestion, ODB++ API - documantion updates and odb view after key creation
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Hi Stefan,
I agree with your explanation about the size of BOOL and bool.
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16 Jun 2020, Marius Koeppel, Suggestion, ODB++ API - documantion updates and odb view after key creation
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Hi Stefan,
I played around with the code a bit more and I found out that if I do:
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24 Jun 2020, Marius Koeppel, Suggestion, ODB++ API - documantion updates and odb view after key creation
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Hi Stefan,
now everything works well (Tested on: OpenSuse and Arch Linux) :)
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