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Internal hard disk utilization more than 90%

prakasse
Advisor

Internal hard disk utilization more than 90%

Hi,

We are running a java application on HP rx8640.
We see that cpu and memory are utilised less than 20%, where as disk utilization on average is more than 95% because of which we are not getting the required TPS. The disk is internal hard disk and has /root partition. We tried the same on rx6600. There too we saw disk utilization to be more than 90% where as cpu and memory are less than 30%. Any guidance will be of great help. we are using HP-UX 11.31.

here is sar output.

16:42:23
c4t6d0 98.49 0.50 5 163 848 0.00 7.01
disk9 98.49 0.50 5 163 848 0.00 7.01
16:42:25
c4t6d0 98.50 0.50 5 164 795 0.00 6.86
disk9 98.50 0.50 5 164 795 0.00 6.86

Thanks,
Senthil.
4 REPLIES
Gokul Chandola
Trusted Contributor

Re: Internal hard disk utilization more than 90%

Hi,
With the help of vgdisplay you can see the Created Volume Group and the defined spce for those.

Use #bdf to know more detail about your file system used and total sapce defined.

if you explain what command o/P is above.. It will more easy to understand.

Regards,
Gokul Chandola
There is always some scope for improvment.
Robert-Jan Goossens
Honored Contributor

Re: Internal hard disk utilization more than 90%

Hi Senthil,

Is your application installed on the root disk? What bout your data?

Regards,
Robert-Jan
prakasse
Advisor

Re: Internal hard disk utilization more than 90%

Hi Gokul,

Here is vgdisplay and bdf output.

rx8640# vgdisplay
--- Volume groups ---
VG Name /dev/vg00
VG Write Access read/write
VG Status available
Max LV 255
Cur LV 3
Open LV 3
Max PV 16
Cur PV 2
Act PV 2
Max PE per PV 4356
VGDA 4
PE Size (Mbytes) 32
Total PE 6534
Alloc PE 3322
Free PE 3212
Total PVG 0
Total Spare PVs 0
Total Spare PVs in use 0
VG Version 1.0
VG Max Size 2178g
VG Max Extents 69696

rx8640# bdf
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol3 73465856 11044080 62042160 15% /
/dev/vg00/lvol1 1835008 158384 1663560 9% /stand

Hi Robert,
App is installed in /home/ directory.

Thanks,
Senthil.
prakasse
Advisor

Re: Internal hard disk utilization more than 90%

Hi Robert,

Data is in separate machine. But that server's resources are also underutilized. CPU/mem/disk below 30%

Thanks,
Senthil