Unlike VMware Server, Xen’s HyperVisor does not allow an easy collection of performance information. The management machine, called “Domain-0” is actually a privileged virtual machine, and thus – get its own small share of CPUs and RAM. Collecting performance information on it will lead to, well, collecting performance information for a single VM, and not…
I have had a system panicking when running the mentioned below configuration: RedHat RHEL 4 Update 6 (4.6) 64bit (x86_64) Dell PowerEdge servers Oracle RAC 11g with Clusterware 11g EMC iSCSI storage EMC PowerPate Vote and Registry LUNs are accessible as raw devices Data files are accessible through ASM with libASM During reboots or shutdowns,…
Installation of minimal selection of Centos 5 – only base, core and dialup selections, will leave a small-sized system, with the minimum required. This is a good setup to start setting up a firewall, and it lets you add any required package later using ‘yum’. This said, you cannot forward X over SSH at this…
My brother is a computer illiterate. He can use a computer for the purpose of e-mail messaging and for editing documents, spreadsheets, etc. I have decided to “abuse” his older laptop, an IBM X31 and install Ubuntu on it. This is some sort of an experiment. I wonder how he, a simple user, can cope…
I love it when I get an Engrish product. Their manuals, their texts – I just love it. This is the cover of a flash light I was given during the latest RedHat summit here in Israel. The interesting part is the text scanned above. I will quote (grammar and spelling mistakes are kept as…
I have been introduced to a very cool software/hardware combination yesterday. It has been, without exaggerating, one of the coolest things I have seen in a while. As you may know, x86 has an issue with scaling up. It’s that x86 architectures and price don’t justify scaling up to tenths and hundreds of CPUs. The…
