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From: info-vax@ucbvax.ARPA
Newsgroups: fa.info-vax
Subject: High speed data acquisitions to RA disks
Message-ID: <7589@ucbvax.ARPA>
Date: Wed, 29-May-85 23:04:24 EDT
Article-I.D.: ucbvax.7589
Posted: Wed May 29 23:04:24 1985
Date-Received: Thu, 30-May-85 20:45:05 EDT
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Organization: University of California at Berkeley
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From: Jacob Moskowitz <JMSK@MIT-MC.ARPA>


	We're having a lot of trouble sustaining high speed (200 kbytes/sec)
	transfers to either an RA-80 or an RA-60.  Does anyone have any 
	suggestions about what we might be doing wrong ?  The transfer (data 
	acquisition from a Digital Sound Corp A/D converter) never gets
	beyond 26000 blocks, though the file is contiguous and has much
	more than that allocated. We're actually running RSX on an 11-34,
	but I suspect that's not too remote from a VAX, since both use the
	Unibus.  We use QIO's and double buffering.

	Is there a PDP-11 mailing list ?

	DSC is no help, having lost all their technically competent people.
	
			Thanks for any help any of you can provide.