Hi,
I am having some trouble with mhist. I suppose that the problems are at least partially due to our specific needs which might exceed what has been tested. For context, in MEG II we have some 10^4 history variables in ~30 different events.
1. mhist -l crashes. After displaying around 7000 lines, I get the following error message:
[mhist,ERROR] [midas.cxx:5949:bm_validate_client_index,ERROR] My client index 10 in buffer 'SYSMSG'
is invalid: client name '', pid 0 should be my pid 3773321
[mhist,ERROR] [midas.cxx:5952:bm_validate_client_index,ERROR] Maybe this client was removed by a
timeout. See midas.log. Cannot continue, aborting...
Aborted (core dumped)
Timing the execution shows around 33 seconds before the process is aborted.
I'm not sure if this would actually fix the problem, but while trying to circumvent the issue, I tried the
following: mhist -e "Xenon" -l This doesn't seem to be implemented. Listing only the variables of a single event would be nice
regardless of our specific issue.
2. mhist and history files.
We have a directory directory with about 2500 history files (mhf_...dat) for the past 1.5 years. Older
history files are archived in other directories with similar numbers of files. When trying to access them, I
encountered two issues:
It seems like it is not possible to pass a "history directory" as an argument. To dump the history for a full
year in the archive directory, I would need to run mhist many times with -f and then combine all the dumps.
If it really does not work, please consider this a feature request.
Also, even using single files does not work at the moment:
$ mhist -e "Xenon" -v "Det XeTmp 0-0" -t 100000 -s 200101 -p 250101 -f
/data2/history/2022/mhf_1644698398_20220212_xenon.dat
ID 980316009, Aug 13 19:10:56, size 1851749486
This command was supposed to show me the rough time frame covered in this particular history file. I was
informed that the history files are in the new "FILE" format and mhist might not work with them properly.
tl;dr
- Bug: mhist -l crashes
- Bug: mhist -f does not work with "FILE" history format
- Feature request: mhist -e "Name" -l to only show variables of event "Name"
- Feature request: Set temporary history dir with a flag
Lukas |