 20 Mar 2025, Konstantin Olchanski, Bug Report, Default write cache size for new equipments breaks compatibility with older equipments
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the main purpose of the event buffer write cache is to prevent high contention for the
event buffer shared memory semaphore in the pathological case of very high rate of very
small events.
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20 Mar 2025, Konstantin Olchanski, Bug Report, Default write cache size for new equipments breaks compatibility with older equipments
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> the main purpose of the event buffer write cache
how to control the write cache size:
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20 Mar 2025, Konstantin Olchanski, Bug Report, Default write cache size for new equipments breaks compatibility with older equipments
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> > the main purpose of the event buffer write cache
> how to control the write cache size:
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21 Mar 2025, Stefan Ritt, Bug Report, Default write cache size for new equipments breaks compatibility with older equipments
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> All this is kind of reasonable, as only two settings of write cache size are useful: 0 to
> disable it, and 10 Mbytes to limit semaphore locking rate to reasonable value for all event
> rate and size values practical on current computers.
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25 Mar 2025, Konstantin Olchanski, Bug Report, Default write cache size for new equipments breaks compatibility with older equipments
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> > All this is kind of reasonable, as only two settings of write cache size are useful: 0 to
> > disable it, and 10 Mbytes to limit semaphore locking rate to reasonable value for all event
> > rate and size values practical on current computers.
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21 Jul 2025, Stefan Ritt, Bug Report, Default write cache size for new equipments breaks compatibility with older equipments
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> Perhaps have:
>
> set_write_cache_size("SYSTEM", 0);
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 13 Jan 2023, Denis Calvet, Suggestion, Debug printf remaining in mhttpd.cxx
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Hi everyone,
It has been a long time since my last message. While porting Midas front-end
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13 Jan 2023, Stefan Ritt, Suggestion, Debug printf remaining in mhttpd.cxx
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These debug statements were added by K.O. on June 24, 2021. He should remove it.
https://bitbucket.org/tmidas/midas/commits/21f7ba89a745cfb0b9d38c66b4297e1aa843cffd
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02 Jul 2009, Dawei Liu, Forum, Data taking hangs in the middle of run
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Hi,
We are using midas to read ADC. It sometimes hung in the middle of data taking.
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03 Jul 2009, Pierre-Andre Amaudruz, Forum, Data taking hangs in the middle of run
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Hi Dawei,
Could you give more info on your setup:
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06 Jul 2009, Dawei Liu, Forum, Data taking hangs in the middle of run
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Hi Pierr-Andre,
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21 Oct 2019, Vinzenz Bildstein, Forum, Data for key truncated
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I keep on getting messages like this:
16:25:35 [fecaen,ERROR] [odb.c:4567:db_get_data,ERROR] data for key
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23 Oct 2019, Konstantin Olchanski, Forum, Data for key truncated
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> I keep on getting messages like this:
> 16:25:35 [fecaen,ERROR] [odb.c:4567:db_get_data,ERROR] data for key
> "/DAQ/params/VX1730/custom/Board 0/Channel 0/Input range" truncated
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22 Apr 2010, Jimmy Ngai, Forum, Customized "Start" page
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Dear All,
After clicking the "Start" button, there is a page for the operator to change some
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14 Jan 2019, Becky Chislett, Bug Report, Custom script with new MIDAS
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I am having difficulty getting the custom scripts to work within the updated MIDAS. Before the
update I was using something like :
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18 Jan 2019, Konstantin Olchanski, Bug Report, Custom script with new MIDAS
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> I am having difficulty getting the custom scripts to work within the updated MIDAS. Before the
> update I was using something like :
>
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22 Jan 2019, Stefan Ritt, Bug Report, Custom script with new MIDAS
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I just check that feature and found it's still working as expected.
On trap I fell in was that a custom page needs the <input type=submit ...> to be imbedded into a pair of
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24 Jan 2019, Konstantin Olchanski, Bug Report, Custom script with new MIDAS
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> <input type=submit name=customscript value="test">
Stefan is right, input-type-submit has to be inside a form. This type of rpc call is "old school". Today, we should
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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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