- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Re: Informix KAIO enabling
Operating System - HP-UX
1753511
Members
5384
Online
108795
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
Go to solution
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
тАО12-27-2004 01:07 AM
тАО12-27-2004 01:07 AM
Currently we are running Informix IDS 2000 Version 9.21.HC4 on HP-UX 11.00 OS. Machine is rp7400 with 4 CPU's and 4GB of RAM.
Question:
1. Has somebody tried to enable KAIO threads on VCPU with this kind of configuration? Share some experience.
2. Currently we have 16 AIO's running and the data is stored in raw sapace. We do not use a cooked files for this. Will KAIO be of some benefit to us? What is the ratio of performance boost if any? What is better: increasing the number of AIO's of enabling KAIO on the system?
3. Is it secure? We do have only production servers so I do not want to find later on that some of the data is corrupted or backup is not working ... I have noticed somewhere that KAIO is not working as it should on HP-UX boxes!
Procedure is well known: pseudo async driver is already in the kernel and HP-UX is supporting the KAIO's (as written in release notes). So basically I am looking for some tried solutions by other users and their's recomendations!
Dejan.
Question:
1. Has somebody tried to enable KAIO threads on VCPU with this kind of configuration? Share some experience.
2. Currently we have 16 AIO's running and the data is stored in raw sapace. We do not use a cooked files for this. Will KAIO be of some benefit to us? What is the ratio of performance boost if any? What is better: increasing the number of AIO's of enabling KAIO on the system?
3. Is it secure? We do have only production servers so I do not want to find later on that some of the data is corrupted or backup is not working ... I have noticed somewhere that KAIO is not working as it should on HP-UX boxes!
Procedure is well known: pseudo async driver is already in the kernel and HP-UX is supporting the KAIO's (as written in release notes). So basically I am looking for some tried solutions by other users and their's recomendations!
Dejan.
Carpe Diem
Solved! Go to Solution.
2 REPLIES 2
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-27-2004 07:20 PM
тАО12-27-2004 07:20 PM
Solution
HP-UX and Informix is like having a Porsche with used(closed) hand-brake.
We are using KAIO since last year without any problems (HPUX11.00)
1. Please check if the asyncdsk driver is installed and used in the drivers of the kernel (SAM).
2. set the env. variable KAIOON=1 and IFMX_HPKAIO_NUM_REQ=2300
3. Check if /dev/async exists.
If not create as root a.) for using HP redundancy or mirroring: /usr/bin/mknod /dev/async c 101 0
b.) for using Informix mirroring or no mirroring: /usr/bin/mknod /dev/async c 101 4
4. chmod 0666 /dev/async
5. create follow entry in the /etc/prigroup file: informix MLOCK
6. execute /sbin/rc1.d/S400set_prvgrp start
7. reduce the AIO's to 2
8. after you restart informix check first the
online.log if KAIO is started. With onstat -g iov there should be lines with kio class
We are using KAIO since last year without any problems (HPUX11.00)
1. Please check if the asyncdsk driver is installed and used in the drivers of the kernel (SAM).
2. set the env. variable KAIOON=1 and IFMX_HPKAIO_NUM_REQ=2300
3. Check if /dev/async exists.
If not create as root a.) for using HP redundancy or mirroring: /usr/bin/mknod /dev/async c 101 0
b.) for using Informix mirroring or no mirroring: /usr/bin/mknod /dev/async c 101 4
4. chmod 0666 /dev/async
5. create follow entry in the /etc/prigroup file: informix MLOCK
6. execute /sbin/rc1.d/S400set_prvgrp start
7. reduce the AIO's to 2
8. after you restart informix check first the
online.log if KAIO is started. With onstat -g iov there should be lines with kio class
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО12-27-2004 07:41 PM
тАО12-27-2004 07:41 PM
Re: Informix KAIO enabling
The procedure is well known except for the following:
1. What the variable IFMX_HPKAIO_NUM_REQ stands for and what if I do not set it to some value?
2. What's the story with the /etc/prigroup?
3. Do you have ANY problems after enabling KAIO on your system - inconsistent backup, some side effects etc ... I am asking this because we do have only production server and I want to be absolutely sure about this issue that is not to have aby problems after enabling KAIO's.
4. What performance boost did you have after enabling KAIO's on yor system? Did you get Porche out of the Clio?
Dejan.
1. What the variable IFMX_HPKAIO_NUM_REQ stands for and what if I do not set it to some value?
2. What's the story with the /etc/prigroup?
3. Do you have ANY problems after enabling KAIO on your system - inconsistent backup, some side effects etc ... I am asking this because we do have only production server and I want to be absolutely sure about this issue that is not to have aby problems after enabling KAIO's.
4. What performance boost did you have after enabling KAIO's on yor system? Did you get Porche out of the Clio?
Dejan.
Carpe Diem
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