history display dropouts

[dd1]

there is a bug in the history display zoom-out updates - I see data drop-outs where data for part of the graph is missing. pressing browser “reload” button reloads the data correctly without the drop-out. I need to find a way to reproduce this before asking Stefan to try to fix it. K.O.

[Stefan Ritt]

The only way I can think of is that one of the “chunks” we are loading would be missing due to an aborted RPC call. Maybe you can look in that direction.

[dd1]

there is no aborted rpc calls or rpc errors (unless history-load rpc errors are not reported/displayed). but the missing chunks do seem to correspond to missing results from an rpc call. still have no recipe to reproduce this, so we cannot debug it yet. K.O.

[Stefan Ritt]

All rpc errors from hs_read_arraybuffer are reported.

[dd1]

just got a drop-out zooming into https://daq16.triumf.ca/?cmd=History&group=PWB&panel=v_p2&A=1593462776&B=1596227576

I was pressing the zoom-out button “too quickly”. Page reload fixed the drop-out.

K.O.

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[dd1]

Also see dropouts when panning to see older data. K.O.

[Stefan Ritt]

I changed a thing there. Can you try with the current version if your dropouts are gone?

[dd1]

I do not see any dropout anymore, I guess it is fixed. K.O.