What do we check on a new system?
Bill_Buros 270000QDEP Comments (5) Visits (4602)
By: Bill Buros.
This morning we got into a good discussion on what simple things that we check on a new system or partition for Power Linux. The list was easy.
So we wrote a quick script here to get that information and thought we'd post that here.
Edit'ed Aug 3rd 2012: See a new article "Setup and understand your system" for a more elaborate exam
Copy/paste that to your system into a script, turn the executable bit on, and give it a shot.
> vi verify.sh (copy/paste the above into the script - file and exit) > chmod +x verify.sh > ./verify.sh
When you run it, it should give you a quick listing of what you have on your system or partition. Here's a quick example which I ran in a Power7 LPAR which was defined with 8 cores and 64GB of memory.
# ./verify.sh Check the number of cores enabled 8 Check the SMT mode: SMT is on Check the expected number of CPUs that are online (based on SMT): 32 Check how fast the CPUs are running min: 3.56 GHz (cpu 30) max: 3.56 GHz (cpu 18) avg: 3.56 GHz Check the total system memory and free memory available: MemTotal: 64208512 kB MemFree: 62304000 kB Check how the total memory for each NUMA node is balanced: Node 0 MemTotal: 65536000 kB Check how the free memory for each NUMA node is balanced: Node 0 MemFree: 62304000 kB Check for any HugePage usage: HugePages_Total: 0 HugePages_Free: 0 HugePages_Rsvd: 0 HugePages_Surp: 0 Hugepagesize: 16384 kB
Thanks to Jenifer for the quick script. Next we'll check the distro and the various important packages that we use for performance.