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13 Jan 2021, Isaac Labrie Boulay, Forum, poll_event() is very slow.
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13 Jan 2021, Konstantin Olchanski, Forum, poll_event() is very slow.
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15 Jan 2021, Isaac Labrie Boulay, Forum, poll_event() is very slow.
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13 Jan 2021, Stefan Ritt, Forum, poll_event() is very slow.
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14 Jan 2021, Pintaudi Giorgio, Forum, poll_event() is very slow.
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14 Jan 2021, Isaac Labrie Boulay, Forum, poll_event() is very slow.
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08 Feb 2021, Konstantin Olchanski, Forum, poll_event() is very slow.
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Message ID: 2076
Entry time: 14 Jan 2021
In reply to: 2074
Reply to this: 2084
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Author: |
Isaac Labrie Boulay |
Topic: |
Forum |
Subject: |
poll_event() is very slow. |
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> Something must be wrong on your side. If you take the example frontend under
>
> midas/examples/experiment/frontend.cxx
>
> and let it run to produce dummy events, you get about 90 Hz. This is because we have a
>
> ss_sleep(10);
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> in the read_trigger_event() routine to throttle things down. If you remove that sleep,
> you get an event rate of about 500'000 Hz. So the framework is really quick.
>
> Probably your routine which looks for a 'lam' takes really long and should be fixed.
>
> Stefan
Hi Stefan,
I should mention that I was using midas/examples/Triumf/c++/fevme.cxx. I was trying to see
the max speed so I had the 'lam' always = 1 with nothing else to add overhead in the
poll_event(). I was getting <200 Hz. I am assuming that this is a bug. There is no
ss_sleep() in that function.
Thanks for your quick response!
Isaac |