- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - HP-UX
- >
- Re: Hot backup.
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
тАО01-04-2002 09:07 AM
тАО01-04-2002 09:07 AM
Re: Hot backup.
(Any chance of seeing that part of the script?)
Another thing - do you get slow downs for anything else? With a memory leak I'd expect the whole system to gradually slowdown, rather than just one process.
How busy is the system generally (bespoke applications etc?)
Have you got any other applications grabbing large amounts of memory? (from memory mib2agt caused a few problems here 'cos it had a big memory leak)
dave
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-04-2002 09:21 AM
тАО01-04-2002 09:21 AM
Re: Hot backup.
There is no mib2agt memory leak. I've already checked that. Two compress are running same time with run state some time.
This is a perl script it comresses then do a cp , here is the part of the script
`compress $ARCH_DIR/$ARCHFILE`;
`cp $ARCH_DIR/$ARCHFILE.Z $BACKUP_DATA`;
`mv $ARCH_DIR/$ARCHFILE.Z $OLDARCH_DIR`;
print REST "cp $BACKUP_DATA/$ARCHFILE.Z $ARCH_DIR\n";
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-04-2002 09:52 AM
тАО01-04-2002 09:52 AM
Re: Hot backup.
I can't see any correlation from time from reboot and CPU usage (one of my first thoughts)...
This leads me to think that it looking more and more to your disc subsystem - why this is refreshing with a reboot is a mystery!
Are you getting any strange errors on dmesg/stm? from your disk devices? I notice you're running MeasureWare Agent - if you have Perfview are your disk access rates climbing?
dave (clutching at straws!)
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-04-2002 09:58 AM
тАО01-04-2002 09:58 AM
Re: Hot backup.
Notice that in the second ps list that you posted the two compresses were only using 57 and 56% CPU whereas the first pair were using 98% and 74%. Not definite but it could be that they are waiting for I/O.
Regards,
John
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-04-2002 10:01 AM
тАО01-04-2002 10:01 AM
Re: Hot backup.
1) I doubt you have an N with just 1 CPU, but if you do, I've found that compute intensive apps on HP-UX single processor boxes run better sequentially (no context switching) than in parallel.
2) check your dbc_max_pct, dbc_min_pct tunings. If they're default, your filesystem cache could be consuming up to 50 percent of available memory over time, which might explain why the compress performs well after reboot, but not if the box has been running for a while.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-04-2002 10:09 AM
тАО01-04-2002 10:09 AM
Re: Hot backup.
It's really a mistry and It's driving me nuts.
This is N-Class with 8 cpu. dbc_min and dbc_max are 5 and 8 respectively.
During this backup some time both the compress are in running and some time one in running state. I really don't know how to pin point this problem and why a reboot fixes it initially for few days.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-07-2002 01:25 AM
тАО01-07-2002 01:25 AM
Re: Hot backup.
The post name is "Hot backup", but it seems to me that you are using cold backup when you compress the table space using the "compress" hp-ux command !
You can use RMAN ( oracle recovery manager ) for Hot Full backup ( level 0 )during the weekend and one incremental Hot backup each day using ( Leve l ).
By this you can reduce the time for backup and also the amount of data backed up.
Magdi
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-07-2002 02:37 AM
тАО01-07-2002 02:37 AM
Re: Hot backup.
1. Make a copy of /var/opt/perf/reptall somewhere. Edit this file and uncomment the DATA TYPE GLOBAL metrics you would like to look at. I suggest as a start:
DATE
TIME
GBL_MEM_CACHE_HIT_PCT
GBL_CPU_TOTAL_UTIL
GBL_CPU_SYS_MODE_UTIL
GBL_CPU_USER_MODE_UTIL
GBL_CPU_NICE_UTIL
GBL_DISK_UTIL_PEAK
GBL_MEM_UTIL
GBL_MEM_USER_UTIL
GBL_MEM_SYS_UTIL
GBL_MEM_PAGEOUT_RATE
GBL_RUN_QUEUE
2. Run "extract" as follows:
# extract -xp -g -l /var/opt/perf/datafiles/logglob -r reptall -b "today-10" -f perf.txt
That will give you the last 10 days worth of data in the perf.txt file. You can import that file into Excel then graph some of the metrics if you like. You should be able to at least confirm from the above whether you have a disk or CPU bottleneck (it already looks like memory pressure is not the culprit).
Also, it wouldn't hurt for you to run a patch analysis on the system. If you have a support contract you can use the "custom patch manager" on ITRC to generate a system specific patch bundle. There are loads of patches available that fix performance problems.
Regards,
Steve
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-07-2002 07:56 AM
тАО01-07-2002 07:56 AM
Re: Hot backup.
I 'extracted' data for last 15 days and'm analyzing it. Thanks(Steve) for the tip. The data I collected is now for every 5 minutes interval ; how do I change this interval duration for every 30 minutes or every 1 hour.
and also is there any way I can extract the data only between time 21:00 to 07:00 ?
Thanks in Advance
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО01-07-2002 08:41 AM
тАО01-07-2002 08:41 AM
Re: Hot backup.
-b