Hello, still very green behind the ears but i'll do my best to explain it as best as i can.
We are currently running sles10 SP3 under z/VM 5.4. The linux has an lvm consisting of about 140 MOD9 disks for our db2 database. We are in progress of migrating al our linux to sles11 so i was looking into a way to use bigger disks as to be able to manage them easier. I thought about using hyperpav so i set up 2 completly similar test systems except for the lvm : PAV0 : 36 mod 9 disk, 12 stripes PAV1 : 12 mod 27 disk each one in a different CU, 24 aliasses (2 for each cu), 12 stripes Now when i run multiple db2 scripts at the same tiem on them, the progress time and memory usage is about the same. However the cpu usage of the PAV1 is 3 times as much as the PAV0 when i check in the "ibm performance toolkit for VM" In linux itself PAV0 stays around 30-40% while PAV1 sometimes goes as high as 180%. Is this normal? If not what can i do to fix it. Christophe Geylens System Engineer | Corporate IT T +32 9 235 62 24 | M +32 478 80 70 53 [email protected] | www.securex.be - Confidentiality Notice - This communication and the information it contains is intended (a) for the person(s) or organization(s) named above and for no other person or organization, and (b) may be confidential, legally privileged and protected by law. Unauthorized use, copying or disclosure of any of it may be unlawful! If you receive this communication in error, please notify us immediately, destroy any copies and delete it from your computer system. Please consult our disclaimer on our site www.securex.eu Thank you. ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
