Difference between revisions of "Storage-Benches"
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== HP Systems == | == HP Systems == | ||
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| + | === MDS 600 based system === | ||
| + | |||
| + | In order to enhance the performance of the MDS 600 based systems, the following tunings have been applied: | ||
| + | * Upgrading the hard disk firmware (HPD3). All hard disks should have the same firmware version. | ||
| + | * Changing the power management profile (max cpu power). | ||
| + | * Using the following system parameters for each disk: | ||
| + | <pre> | ||
| + | echo "cfq" > /sys/block/cciss\!${disk}/queue/scheduler | ||
| + | echo 256 > /sys/block/cciss\!${disk}/queue/nr_requests | ||
| + | echo 4096 > /sys/block/cciss\!${disk}/queue/read_ahead_kb | ||
| + | </pre> | ||
| + | * Using XFS filesystem aligned with the RAID strip | ||
| + | * Using RAID units composed of 5 disks wisely selected on different columns. | ||
Version du 14:29, 31 mai 2011
Storage benchmarking and tuning depends upon several parameters like file systems, kernel parameters, RAID configuration, network parameters, etc. This page aims to provide benchmarking tools and procedures for LCG Storage Element, as well as some tuning hints for particular hardware solutions.
Benchmarking
Tuning
DELL Systems
HP Systems
MDS 600 based system
In order to enhance the performance of the MDS 600 based systems, the following tunings have been applied:
- Upgrading the hard disk firmware (HPD3). All hard disks should have the same firmware version.
- Changing the power management profile (max cpu power).
- Using the following system parameters for each disk:
echo "cfq" > /sys/block/cciss\!${disk}/queue/scheduler
echo 256 > /sys/block/cciss\!${disk}/queue/nr_requests
echo 4096 > /sys/block/cciss\!${disk}/queue/read_ahead_kb
- Using XFS filesystem aligned with the RAID strip
- Using RAID units composed of 5 disks wisely selected on different columns.
