- Community Home
- >
- Storage
- >
- Entry Storage Systems
- >
- Disk Enclosures
- >
- EVAperf averaging
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-06-2009 06:41 AM
тАО08-06-2009 06:41 AM
If you run:
evaperf hps -cont 60 -dur 60
You will get two sets of results. The first set of results immediate. It then waits 60 seconds and outputs the 2nd set of results.
My question is regarding that first set of results that are output. Are they an average of the previous 60 seconds (before the command was executed) or an instantaneous reading? If it's an average, that implies that a backlog of stats are stored somewhere constantly. What if I were to do an hourly reading? I doubt the averages of the past hour are being stored somewhere.
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-06-2009 06:52 AM
тАО08-06-2009 06:52 AM
Re: EVAperf averaging
I.E
evaperf cs ├в cont 60 -dur 7200
It states multiple execution instances with 60-second sample intervals with two-hour duration.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-06-2009 06:55 AM
тАО08-06-2009 06:55 AM
Re: EVAperf averaging
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-06-2009 07:00 AM
тАО08-06-2009 07:00 AM
Re: EVAperf averaging
http://h71028.www7.hp.com/ERC/downloads/5983-1674EN.pdf?jumpid=reg_R1002_USEN
Page 5:
"Long sample intervals on the HP StorageWorks Enterprise Virtual Array 4000 (EVA4000), HP StorageWorks Enterprise Virtual Array 6000 (EVA6000), and HP StorageWorks Enterprise Virtual Array 8000 (EVA8000) will show less variation because of averaging over the sample interval."
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-06-2009 07:20 AM
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО08-06-2009 08:11 AM
тАО08-06-2009 08:11 AM
Re: EVAperf averaging
"The counters are managed somewhat differently in HP StorageWorks Enterprise Virtual Array 3000 (EVA3000) and HP StorageWorks Enterprise Virtual Array 5000 (EVA5000) systems than in EVA4000, EVA6000, and EVA8000 systems. In EVA3000 and EVA5000 systems, most counters (Req/s, MB/s, and so on) are one-second averages per sample, regardless of the interval between samples. Therefore, each sample represents an instantaneous snapshot of the activity at that moment. In EVA4000, EVA6000, and EVA8000 systems, however, the counters are true averages over the sample interval, so highly variable data will have different characteristics for longer samples than for shorter."