 26 May 2014, Konstantin Olchanski, Forum, Running a frontend on Arduino Yun
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> I'm trying to get a frontend running on an arduino yun single board computer
> (cpu is Atheros AR9331 and OS is a linux derivate
> http://arduino.cc/en/Main/ArduinoBoardYun )
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27 May 2014, Konstantin Olchanski, Forum, Running a frontend on Arduino Yun
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> Ok, I'm currently trying to get things running, setting up a crosscompiler toolchain for the Arduino Yun is fairly
> easy, just follow the tutorial on the OpenWrt webpage.
>
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 11 Jul 2014, Konstantin Olchanski, Info, MIDAS high speed test
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We have tested operation of MIDAS using a 10GigE network connection. Using a dummy frontend
generating fake data, we can record MIDAS data to disk at at least 700 Mbytes/sec as reported by
the MIDAS status page.
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06 Aug 2014, Konstantin Olchanski, Info, MIDAS high speed test
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> We have tested operation of MIDAS using a 10GigE network connection. Using a dummy frontend
> generating fake data, we can record MIDAS data to disk at at least 700 Mbytes/sec as reported by
> the MIDAS status page.
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14 Oct 2014, Konstantin Olchanski, Bug Report, Problem in mfe multithread equipments
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In the ALPHA experiment at CERN I found a problem in mfe.c handling of multithreaded equipments. This problem was in
some forms introduced around May 2013 and around Aug 2013 (commit
https://bitbucket.org/tmidas/midas/src/45984c35b4f7/src/mfe.c) (I hope I got it right).
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14 Oct 2014, Konstantin Olchanski, Bug Report, Hostile network scans against MIDAS RPC ports
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At CERN I see a large number of hostile network scans that seem to be injecting HTTP requests into the
MIDAS RPC ports. So far, all these requests seem to be successfully rejected without crashing anything, but
they do clog up midas.log.
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14 Oct 2014, Konstantin Olchanski, Bug Report, Problem in mfe multithread equipments
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For my reference:
good version: https://bitbucket.org/tmidas/midas/src/6899b96a4f8177d4af92035cd84aadf5a7cbc875/src/mfe.c?at=develop
first breakage: https://bitbucket.org/tmidas/midas/src/c60259d9a244bdcd296a8c5c6ab0b91de27f9905/src/mfe.c?at=develop
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14 Oct 2014, Konstantin Olchanski, Bug Report, Problem with EQ_USER
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If you use EQ_USER in mfe.c and have multiple threads writing into the ring buffer, you will have a big
problem - the thread locking in the ring buffer code only works for a single writer thread and a single
reader thread.
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16 Oct 2014, Konstantin Olchanski, Bug Report, Hostile network scans against MIDAS RPC ports
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> Doing this through the ODB seems ok to me. If the ODB cannot be accessed, you can fall back to no protection.
>
> At PSI we fortunately do not have these network scans because PSI uses a institute-wide firewall.
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24 Oct 2014, Konstantin Olchanski, Forum, Running a frontend on Arduino Yun
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> INT read_event(char *pevent, INT off)
> {
> WORD *data;
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27 Jan 2015, Konstantin Olchanski, Bug Report, getaddrinfo()
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To support IPV6, we need to migrate MIDAS from gethostbyname() to getaddrinfo(). (Thanks to
http://www.openwall.com/lists/oss-security/2015/01/27/9). K.O. |
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07 May 2015, Konstantin Olchanski, Info, midas.triumf.ca https ssl certificate update
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The SSL certificate for https://midas.triumf.ca has been resigned with SHA256 to fix the complaint from google-chrome about SHA1-signed certificate -
SHA1 signatures are now considered to be insufficiently secure, have to be replaced by SHA256.
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13 May 2015, Konstantin Olchanski, Forum, Check if Client is running from Javascript
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> Is there currently an easy way to check from javascript if a midas client is running? I mean an equivalent
to cm_exist.
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14 May 2015, Konstantin Olchanski, Suggestion, checksums for midas data files
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I am adding LZ4 and LZO compression the mlogger and as part of this work, I would like to add
computation of checksums for the midas files.
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15 May 2015, Konstantin Olchanski, Suggestion, checksums for midas data files
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> > Any thoughts on this?
>
> We use binary midas files now for ~20 years and never felt the necessity to put any checksums or even encryption on these files ...
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22 May 2015, Konstantin Olchanski, Info, mhttpd HTTPS/SSL server updated
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I updated the mhttpd HTTPS/SSL server (mongoose) and https://www.ssllabs.com/ssltest/index.html is
now more or less happy with it. google chrome connects using "modern cryptography".
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07 Jul 2015, Konstantin Olchanski, Info, mhttpd HTTPS/SSL server updated
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> mhttpd uses the latest release of mongoose 4.2 which is no longer supported by
> author. Latest version of mongoose is 5.x which has a severely improved API, but removed automatic
> multithreading.
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15 Jul 2015, Konstantin Olchanski, Info, mlogger improvements
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A set of improvements to mlogger is in:
a) event buffer (SYSTEM) size up to 2GB
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15 Jul 2015, Konstantin Olchanski, Info, mhttpd HTTPS/SSL server updated
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> > mhttpd uses the latest release of mongoose 4.2
mhttpd is now explicitly linked with OpenSSL to provide secure https connections via the mongoose web server.
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15 Jul 2015, Konstantin Olchanski, Info, ROOT support in flux
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ROOT support in MIDAS is being reworked:
a) ROOT support moved from midas.h to rmidas.h
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