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тАО03-06-2009 11:20 PM
тАО03-06-2009 11:20 PM
DISK I/O
os hpux 11.23 ia 64
One of my disk is showing high I/O...is there any way to check whcih process is highly using the disk ??no glance on my machine ..is there any script to check which process is causing my disk I/O high ??
rgds
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тАО03-06-2009 11:55 PM
тАО03-06-2009 11:55 PM
Re: DISK I/O
You can check it by sar tools or you can install glance from application cd for checking activity report.
From root console
#sar
For details man pages of sar and check by the below link
#man sar
http://docs.hp.com/en/B2355-
90692/sar.1M.html
If it helps, pls assign point.
Rgds//
Taifur
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тАО03-07-2009 01:14 PM
тАО03-07-2009 01:14 PM
Re: DISK I/O
vmstat -d
iostat also can show disk I/O statistics
but glance seems most sutiable for your request
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тАО03-07-2009 01:26 PM
тАО03-07-2009 01:26 PM
Re: DISK I/O
http://docs.hp.com/en/5991-7469/ar01s06.html
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тАО03-07-2009 04:09 PM
тАО03-07-2009 04:09 PM
Re: DISK I/O
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тАО03-07-2009 09:06 PM
тАО03-07-2009 09:06 PM
Re: DISK I/O
Disk Bottlenecks
High disk utilization (sar -d, io stat, Glance);
Example:-
#sar -d 5 10
Large disk queue length (sar -d, io stat, Glance);
High %wio (sar -u);
Low buffer cache hit rates (sar -b);
Large run queue with idle CPU (vmstat 5 30).
Regards,
Asif Sharif
Asif Sharif
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тАО03-07-2009 09:48 PM
тАО03-07-2009 09:48 PM
Re: DISK I/O
It would be difficult to find the process which utilized the disk without having specific tools, eg: glance
You would be able to find the disk which is doing high IO via "sar -d"
You need to look into the VG which this disk belongs to
To find the VG(strings /etc/lvmtab)
Once you find the VG, check what lv's are configured, and which Filesystem it is mounted.
If its application FS, then u cud check from the application end.
But to find the exact process, you need some tools.
Am not sure, but sometime back, trial software for glance was available free for download,
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тАО03-07-2009 09:55 PM
тАО03-07-2009 09:55 PM
Re: DISK I/O
https://h10078.www1.hp.com/cda/hpms/display/main/hpms_content.jsp?zn=bto&cp=1-11-15-28^9637_4000_100__&jumpid=reg_R1002_USEN
"HP GlancePlus/UX for HP-UX 11i Software Evaluation"
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тАО03-23-2009 03:43 AM
тАО03-23-2009 03:43 AM
Re: DISK I/O
thanks for the replies,still i havent recd the correct answer which i am looking for .i dont want to use glance,as my customer dont to to install it ...i heared some scripts are there to findout the process which is higly utilising the disk i/o...does anyone knows ?..
rgds
trng