 28 Aug 2018, Konstantin Olchanski, Bug Report, mserver problem
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> Hi. We've just updated our midas installation to the newest version, and we now see repeated errors from the
> mserver in messages. Mostly we see
>
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 29 Aug 2018, Konstantin Olchanski, Forum, midas forum mail relay changed to smtp.triumf.ca
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Per changes at TRIUMF, the MIDAS forum mail relay was changed from trmail.triumf.ca to
smtp.triumf.ca. K.O. |
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22 Nov 2018, Konstantin Olchanski, Info, status of self-signed https certificates
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I just happened to check the current situation with self-signed https certificates as implemented in mhttpd.
(To remember, the powers-that-be are pushing for universal use of https for all web access. The https
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03 Dec 2018, Konstantin Olchanski, Info, status of self-signed https certificates
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> > In the mean time, we continue to recommend that mhttpd should be used behind a password protected https proxy (i.e. apache
> > httpd, etc).
>
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05 Dec 2018, Konstantin Olchanski, Info, Partial refactoring of ODB code
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The current ODB code has several structural problems and I think I now figured out how to straighten them out.
Here is the problems:
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18 Dec 2018, Konstantin Olchanski, Info, mxml update
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the mxml library was updated to make it thread-safe.
https://bitbucket.org/tmidas/mxml/src/master/
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26 Dec 2018, Konstantin Olchanski, Bug Report, mhttpd - custom page - RHEL/Fedora
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> > [mhttpd,ERROR] [mhttpd.cxx:563:rread,ERROR] Cannot read file '/root', read of
> > 4096 returned -1, errno 21 (Is a directory)
>
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26 Dec 2018, Konstantin Olchanski, Bug Report, mhttpd - custom page - RHEL/Fedora
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> I implemented that fix. Thank you to Andreas. Creating "Custom" directory from the web now does
> not have that problem any more.
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26 Dec 2018, Konstantin Olchanski, Info, Partial refactoring of ODB code
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> One additional comment: In the 90's when I developed this code, locking was expensive.
> Now the world has changed, we can do almost a million locks a second.
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26 Dec 2018, Konstantin Olchanski, Info, bm_receive_event timeout in ROME
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> There is a bug report in the ROME repository which says bm_receive_event timeouts.
> https://bitbucket.org/muegamma/rome3/issues/8/rome-with-midas-produces-timeout-after
> Does anybody have any ideas what could causing the problem ?
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26 Dec 2018, Konstantin Olchanski, Forum, Implementing MIDAS on a Satellite
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>
> Thank you for your comment Stefan. We do have some hardware resources on the board such as RAM, ROM and
> Flash storage so we wouldn't necessarily have to virtualize everything. Ideally we would like a
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26 Dec 2018, Konstantin Olchanski, Suggestion, Self-resetting alarm class
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> > If you run an external script anyway, you can also call "odbedit -c alarm" to
> > reset all alarms. Or you could try to set the "Triggered" entry of that certain
> > alarm to 0 (again, with odbedit), that could also work.
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27 Dec 2018, Konstantin Olchanski, Bug Report, mhttpd - custom page - RHEL/Fedora
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> I still strongly believe that mhttpd should not serve arbitrary files (only serve files explicitly listed in ODB) or as next best option,
> only serve files from subdirectories explicitly listed in ODB.
>
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28 Dec 2018, Konstantin Olchanski, Info, note on the midas event buffer code, part 1
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In this technical note, I write down the workings of the midas event buffer code, the path
that events travel from the frontend to the SYSTEM buffer to mlogger (and to disk).
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28 Dec 2018, Konstantin Olchanski, Info, note on the midas event buffer code, part 2, bm_send_event()
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> In this technical note, I write down the workings of the midas event buffer code
> we need to understand and write down how the event buffer code works.
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28 Dec 2018, Konstantin Olchanski, Info, note on the midas event buffer code, part 3, rpc_send_event()
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> In this technical note, I write down the workings of the midas event buffer code
> we need to understand and write down how the event buffer code works.
> bm_send_event() does this ...
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28 Dec 2018, Konstantin Olchanski, Info, note on the midas event buffer code, part 4, reading from event buffer
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> > In this technical note, I write down the workings of the midas event buffer code
> > we need to understand and write down how the event buffer code works.
> > bm_send_event() does this ...
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02 Jan 2019, Konstantin Olchanski, Info, note on the midas event buffer code, part 5, bm_read_buffer()
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> > > In this technical note, I write down the workings of the midas event buffer code
> > > we need to understand and write down how the event buffer code works.
> > > bm_send_event() does this ...
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02 Jan 2019, Konstantin Olchanski, Info, note on the midas event buffer code, part 6, reading events through the mserver
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> > > > In this technical note, I write down the workings of the midas event buffer code
> > > > we need to understand and write down how the event buffer code works.
> > > > bm_send_event() does this ...
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03 Jan 2019, Konstantin Olchanski, Info, note on the midas event buffer code, part 7, event buffer polling frequencies
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> > > > > In this technical note, I write down the workings of the midas event buffer code
> > > > > we need to understand and write down how the event buffer code works.
> > > > > bm_send_event() does this ...
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