From: Frank Geurts (geurts_at_rice.edu)
Date: Mon Jan 20 2003 - 22:58:35 EST
Tonko Ljubicic wrote:
>>Tonko -- i repeatedly see these messages from tof01 fly by ... most of
>>the time tof02 seems to be happy. I am not sure what to think about
>>these ... (see below)
>
>
> No worries. This stems from other reasons.
>
> While I'm discussing TOF, :-) - is there a reason why tof01 would
> wiggle it's BUSY so that there is a longish BUSY (0.5 s or so...)
> every few seconds (3-4-5 or so)?
>
> Are you doing something in parallel? Writing to your local disk, eh?
the machine checks every minute the tofr HV system and every 10 minutes
the tofp HV. These jobs however are very low in priority compared to the
relevant daq processes which run at maximum priority.
I can temporarily stop these monitoring processes so you can check
whether it makes a difference, just say when ...
But, what worries me a little, is that i see some times time-outs
because L2s were missed. This is something I brought earlier today with
John Mitchell. These time-outs make a processed L0 token time-out while
waiting for the L2 ... the time-out is set at 2sec.
This has been our mode of operation last year, during Au+Au and p+p
operations, apparently w/o problems.
Anyway, the 1st thing I can do is temporarily shut-down the two
monitoring processes so you can check whether the BUSYs go away .. or not.
-frank
This archive was generated by hypermail 2.1.4 : Thu Jul 24 2003 - 00:39:32 EDT