Drew Wutka
DWUTKA at Marlow.com
Wed Apr 1 09:36:00 CDT 2009
Why don't you double that, by getting a RAID controller and two of those drives, to stripe them? It'll read twice as fast! Drew -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of jwcolby Sent: Wednesday, April 01, 2009 9:18 AM To: Access Developers discussion and problem solving Subject: Re: [AccessD] Solid State Disk performance In this particular case I am just installing the application on a VM and then copying the VM so that I run one instance in each VM. Tech support for the application told me that as long as I have a license to use the software I could run more than one copy to speed up my processing. The application does most of the processing locally so it is just my own hardware taking the hit. It does upload a file for post processing but they told me I could do this (which is really pretty nice of them) so I am not violating any license. Running it in a VM allows me to move the application to a different server if I need without uninstalling / reinstalling / obtaining the key for the new install etc. Obviously it also allows me to run multiple instances to speed up the processing. I process huge tables, for example last night / today I am processing about 50 million records. My time to process (on an instance of the program) is about 4-5 million records / hour, however there is upload / process / download time on the remote server. Together the total comes to about 20 minutes per million records so it will take about 17 hours or so to process the table. If I can throw multiple VMs at it I can cut that by at least two, possibly three or even four. Nine hours is better than 17, 5 hours is better yet. We shall see. The SSD gives me extremely high (RAID 0 like) bandwidth, but it also gives me extremely high IO processing as well as extremely low latency. For a process like this where the system does nothing but read and process, the performance boost versus a hard disk is astounding. And all for a measly $125! John W. Colby www.ColbyConsulting.com The information contained in this transmission is intended only for the person or entity to which it is addressed and may contain II-VI Proprietary and/or II-VI Business Sensitive material. If you are not the intended recipient, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. You are notified that any review, retransmission, copying, disclosure, dissemination, or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited.