KAGRA Logbook

Abstract

Because we had model updates on Jun. 7th (see also klog#29795), I made an interim report about IPC glitches from May 17th (klog#29571) to Jun. 7th.
In these three weeks, there was 3 IPC glitches.
Glitch situation seemed to be improved by balancing a data rate on two NICs from once per 1-2 days to once per week.
During this check, I found the data rate on K1ASC decreased by the update in klog#29795.
Some DQ channels were not recorded properly now because of a mistake in the model modification.

Details

In order to improve the IPC glitch situation, we had installed the secondary NIC (klog#29110) and taken a balance of data rate on two NICs (klog#29571). As reported in klog#29571, glitch rate decrease by installing the secondary NIC from a few per day to once per 1-2 days. Though we had still only 3 weeks data after balancing a data rate, I checked the recent situation because model update was done in last Friday.

In recent 3 weeks, we had 3 IPC glitches as follows.
[2024-05-27 07:36:56]: K1IMC0, K1OMC0, K1EY0 [2024-05-28 11:07:32]: K1IMC0, K1PR0, K1IX1, K1EY0 [2024-06-01 12:42:54]: K1IMC0, K1PR0, K1BS
I'm not sure we can conclude a latest glitch rate as once per week with only 3 weeks data. But it seemed to be improved from the previous situation (once per 1-2 days). I'll continue to check the situation after the model updates.

By the way, after the model update on last Friday, data rate on K1ASC decreased from 4312kB/s to 3693kB/s in spite of adding many DQ channels on k1asc model according to klog#29445. It seems to be caused by changing DQ channel block in the model file from plain text to html format probably by right-click menu as follows.

controls@k1ctr4:/opt/rtcds/userapps/release$ grep '>#DAQ Channels<' */k1/models/k1asc.mdl
	      "; text-indent:0px; line-height:100%;\"><span style=\" font-size:14px;\">#DAQ Channels</span></p>\n<p style=\"-q"

I haven't checked which channels have been missing in current DAQ list. Anyway, many channels (~700kB/s = ~20% of ASC related channels) were removed from DAQ list. For fixing this situation, all DQ channel blocks in k1asc model must be checked and broken blocks must be fixed. After then k1asc model must be rebuilt and restarted.