- Community Home
- >
- Storage
- >
- Entry Storage Systems
- >
- Disk Enclosures
- >
- Re: disk throughput as seen through MW or Glance
Disk Enclosures
1752579
Members
4016
Online
108788
Solutions
Forums
Categories
Company
Local Language
юдл
back
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
юдл
back
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
Blogs
Information
Community
Resources
Community Language
Language
Forums
Blogs
Topic Options
- 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
тАО02-03-2005 12:14 AM
тАО02-03-2005 12:14 AM
disk throughput as seen through MW or Glance
As seen through Measureware, 14 meg/sec phys read is the maximum throughput we get, regardless of our disk sub-system. We had been using a VA7100 and recently switched to an EMC/Clarion CX400. They are connected via A5158A FC cards. Specs on both systems claim their throughput will be higher than this, so I don't know where this limitation is coming from. We have vxfs filesystems defined, and are running an Oracle 8 database. Using sar -b , the %rcache throughout the day can often be 0, which doesn't surprise me considering the amount of physical reads that happen on the database files. On the db side, the buffer cache hit ration is around 95% which is good. We are running PeopleSoft 7.5 applications. Any clues as to where this limitation is coming from? Or am I misinterpreting the statistics?
3 REPLIES 3
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-04-2005 06:05 AM
тАО02-04-2005 06:05 AM
Re: disk throughput as seen through MW or Glance
Hi,
Could be an application bottleneck but try this...
Run sar or mw on the system to measure the activity.
Then do a read with dd on a very big device.
dd if=/dev/ of=/dev/null
This basically bypasses the applications, like oracle and give a bigger number of what the hardware should be able to handle...
Regards,
Bob
Could be an application bottleneck but try this...
Run sar or mw on the system to measure the activity.
Then do a read with dd on a very big device.
dd if=/dev/
This basically bypasses the applications, like oracle and give a bigger number of what the hardware should be able to handle...
Regards,
Bob
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-04-2005 06:18 AM
тАО02-04-2005 06:18 AM
Re: disk throughput as seen through MW or Glance
thanks - I will try this during a non-peak hour, since it is our db production server.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО02-07-2005 04:03 AM
тАО02-07-2005 04:03 AM
Re: disk throughput as seen through MW or Glance
Hi,
Any luck on this? Do you get some raw data from the dd?
Regards,
Bob
Any luck on this? Do you get some raw data from the dd?
Regards,
Bob
The opinions expressed above are the personal opinions of the authors, not of Hewlett Packard Enterprise. By using this site, you accept the Terms of Use and Rules of Participation.
News and Events
Support
© Copyright 2024 Hewlett Packard Enterprise Development LP