RE: pvAccess monitor streaming data

[Dalesio, L. <da...@bn...>]

Do we have throughput rates for PVAccess client?
Did we profile the performance so that we understand where the time is being used (in case we would like to consider speeding it up)?
Thanks,
Bob


-----Original Message-----
From: jam...@di... [mailto:jam...@di...]
Sent: Fri 8/26/2011 7:53 AM
To: mat...@gm...
Cc: epi...@li...
Subject: RE: pvAccess monitor streaming data
 
Hi Matej

I'm not sure about the update rate (100Hz maybe?), but the throughput could be up to 10Gbit/s on some of our large detectors.

James

-----Original Message-----
From: Matej Sekoranja [mailto:mat...@gm...] 
Sent: 26 August 2011 12:33
To: Rowland, James (DLSLtd,RAL,DIA)
Cc: epi...@li...
Subject: Re: pvAccess monitor streaming data

Hi,

> Is pvAccess going to be suitable for data acquisition? Beamlines currently
> use a streaming socket and don't want frames to be lost in the ring buffer
> without notification which is the case with a channel access monitor if the
> client doesn't keep up, they want to receive a back-pressure notification.
> Is there a way to use pvAccess to give similar functionality or is pvData
> over the socket the way to go?

pvAccess gives you the information if some of the monitors where lost
(overridden by newer values).
Queue (ring buffer) size is configurable per monitor.
What's the update rate?

Matej

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