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<== Date ==> <== Thread ==>

Subject: Re: Waveform record I/O interrupt. asyn
From: Ralph Lange <[email protected]>
To: EPICS Tech Talk <[email protected]>
Date: Sat, 22 Feb 2014 10:09:31 +0100
On Sat Feb 22 2014 02:25:30 GMT+0100 (CET), Hill, Jeff <[email protected]> wrote:

Ø  the event queue does not buffer arrays – it only queues up the pointer to the

Ø  array. If you are reusing the same buffer (as the waveform record does) it may

Ø  also be overwritten if the client is not taking the data fast enough.

 

Ø  We are working on ways to better support very large arrays in EPICS V4 – these

Ø  must be done for us over the next 12 months – but only pieces are done now.

 

We are deploying a fix for this issue at LANSCE which is, in contrast, implemented into V3.


The - already implemented - server-side CA plugins/filters in 3.15 can also achieve this behavior.

~Ralph


Replies:
RE: Waveform record I/O interrupt. asyn Hill, Jeff
References:
Waveform record I/O interrupt. asyn Vishnu Patel
RE: Waveform record I/O interrupt. asyn Dalesio, Leo
RE: Waveform record I/O interrupt. asyn Hill, Jeff

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