Date: Mon, 31 Jan 2011 15:56:32 -0500
Reply-To: Suzanne McCoy <Suzanne.McCoy@CATALINAMARKETING.COM>
Sender: "SAS(r) Discussion" <SAS-L@LISTSERV.UGA.EDU>
From: Suzanne McCoy <Suzanne.McCoy@CATALINAMARKETING.COM>
Subject: Re: Poor I/O performance
Content-Type: text/plain; charset="us-ascii"
try a proc copy and see if that is any faster
From: SAS(r) Discussion [mailto:SAS-L@LISTSERV.UGA.EDU] On Behalf Of Tolbert, William
Sent: Monday, January 31, 2011 3:49 PM
Subject: Poor I/O performance
Hi all -- I've got a Windows 7 virtual machine connected to a storage area network (commonly referred to as a SAN).
Reading a 6GB SAS dataset from the SAN takes about 8 minutes in SAS. That's pretty slow and I naturally assumed I had a bandwidth issue. However, I can *copy* the file using Windows Explorer in 1 minute, consistently. This appears to be something peculiar to SAS. I'm experimenting with bufsize and bufno, but so far I haven't found anything to explain this much difference.
Here's some code:
/* 8 minutes */
Copy \path\to\san\myfile myfile
/* 1 minute */
Thanks for you insight!
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