Linux I/O scheduler performance evaluation

Presentation abstract

To check if previous results of I/O Scheduler analyses are still valid, we re-evaluated this subject. For this evaluation, the cfq, deadline and noop I/O schedulers were compared on different workload scenarios and with different distributions.

View
Creation date
October 2013

Linux on System z Disk I/O Performance - Part 1 (Webcast)

Live Virtual Class abstract

The session introduces features available in Linux on System z and in storage server hardware that help increase disk I/O throughput. It discusses what they are, which options they provide, why or when they should be used and in which distribution they can be used. And in particular it discusses a set of different configurations of disk attachment and gives hints for optimal setup.

View
Replay
Creation date
November 2013

High performance FICON

Presentation abstract
View
Creation date
July 2010

ECKD versus SCSI

Presentation abstract
View
Creation date
July 2010

DASD block size

Presentation abstract
The DASD block size recommendation is 4096 bytes. The presentation shows that throughput and capacity is lower with smaller block sizes.
View
Creation date
June 2010

Linux disk I/O considerations

Presentation abstract
View
Creation date
June 2010

Disk performance optimizing

Presentation abstract
View
Creation date
June 2010

Storage pool striping

Presentation abstract
This presentation explains storage pool striping, shows its impact on performance, and compares the performance of storage pool striped volumes with logical volumes.
View
Creation date
March 2009

Team

Please address any comments to the performance team: linux390@de.ibm.com