- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Virtual Memory (confusion)
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
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
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
09-11-2013 07:34 AM
09-11-2013 07:34 AM
Virtual Memory (confusion)
Hi,
I have some confusion about the VM memory and swap and psuedo memory.
Below are details for my server:
Total VM : 61.1gb Sys Mem : 30.7gb User Mem: 54.7gb Phys Mem : 191.8gb
Active VM: 17.5gb Buf Cache: 1mb Free Mem: 102.8gb FileCache: 3.6gb
I would be interested to understand why the database sever is using virtual memory when there is plenty of free physical memory.
Please reply.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-11-2013 12:02 PM
09-11-2013 12:02 PM
Re: Virtual Memory (confusion)
>I have some confusion about the VM memory and swap and pseudo memory.
Virtual Memory is the overall term for RAM or swap. The CPU typically loads from virtual addresses which are mapped to physical addresses, possibly with page outs and page ins using swap.
To check your swap usage, use "swapinfo -tam" and vmstat.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-12-2013 02:07 AM
09-12-2013 02:07 AM
Re: Virtual Memory (confusion)
Thanks for your reply.
As I can see on the server using glance that around 61 GB is showing for VM and some space for Active VM. How the server is defining this space?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-12-2013 03:19 PM
09-12-2013 03:19 PM
Re: Virtual Memory (confusion)
>How the server is defining this space?
VM includes both swap and RAM. You need to look for glance stats on swapping.