I'm porting applications from an iLinux to a zLinux and am experiencing performance problems on one particular process. This process uses dscli (IBM Data Storage Command Line Interface) to our DS8870 to retrieve information and report statistics (allocation).
On an Intel Linux virtual machine, the process statistics: $ time ./getinfo.rex real 54m57.647s user 9m16.209s sys 0m38.034s Compared to zLinux (ClefOS 7.4): $ time ./getinfo.rex real 480m57.309s user 443m1.009s sys 2m13.860s I have had no performance problems with any other process that I've migrated to zLinux. The process do use a different version of Java: iLinux: /usr/java/jdk1.6.0_03/bin/java -Dcom.ibm.storage.ess.cli.instbase=/opt/ibm/dscli ... zLinux: /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.181-3.b13.el7_5.s390x/jre/bin/java -Dcom.ibm.storage.ess.cli.instbase=/opt/ibm/dscli ... Are there performance issues with OpenJava? Frank M. Ramaekers Jr. | Systems Programmer | Information Technology | American Income Life Insurance Company | 254-761-6649 (732-6649) ---------------------------------------------------------------------- This message contains information which is privileged and confidential and is solely for the use of the intended recipient. If you are not the intended recipient, be aware that any review, disclosure, copying, distribution, or use of the contents of this message is strictly prohibited. If you have received this in error, please destroy it immediately and notify us at [email protected]. ---------------------------------------------------------------------- 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/
