The sysstat package is included in all distributions but not always installed by default. It’s a collection of performance monitoring tools and you can check the options for your current version in the manual pages. It’s platform independent and so … Read the rest
In the new white paper “Sharing A WebSphere Application Server V8 Installation Among Many Linux for IBM System z Servers” you find a hands on description on a more complex WAS server setup. This is the update of the white … Read the rest
This Redpaper describes the installation of the latest Oracle DB on RHEL 5 and SLES 11 for Linux on System z. It covers both ECKD as well as SCSI installations and on the Oracle side the Grid Infrastructure and RAC.… Read the rest
The main features in z/VM 6.2 are certainly Single System Image (SSI) and Live Guest Relocation (LGR). With that it’s now possible to have up to four z/VMs in one cluster and move the Linux guests from one to the … Read the rest
There are multiple sources for finding middleware and solutions for Linux. As the web sites get updated this may change – let me know then I adapt the description.
Please note that none of those catalogs is complete, they are … Read the rest
When a process in Linux has issued an IO and is waiting for a response there are basically two different possibilities. The good case is that there is other work pending and the CPU can continue to work. If there … Read the rest
(updated 3/12/2013)
Virtual Dynamically-linked Shared Object (VDSO) is a shared library provided by the kernel. This allows normal programs to do certain system calls without the usual overhead of system calls like switching address spaces.
For … Read the rest
Recently there has been quite some discussion around the support for OCFS2. SUSE has published their support statements in two blog entries:
More and more installation tools use the cio_ignore kernel parameter. This parameter has been developed to allow hiding of devices from Linux, especially when using production Linux systems in LPAR.
The approach used in installers / automation systems is to … Read the rest
The startup time for servers increased during the last years. So even for development and test servers it’s now common to either let them run or pause them. On z/VM with Linux on System z there are two different methods … Read the rest