It has been about two years since I have visited a specific rack closet, and took pictures. Several days ago I have visited the same rack closet, and took some new pictures. You can tell time went by 😉
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I have had an interesting experience with HPE servers, where the BIOS was defined to allow max performance (in contrast to ‘balanced’ mode), but still – the CPU was not at max all the time. While we generally, strive to a greener computing, when having low-latency workload, we expect a deterministic performance. We want our…
We have one connection via ATM like interface and we have one PPP connection via xDSL (described here), and we want load balancing for this whole party. Following this specific part of lartc.org guide, we’ve managed to get this to work. The idea goes like this (Centos 4.3): 1. Do not state default route for…
Recently, with the release of a new 8.x version of Dell SrvAdmin tools, the Centos/RHEL5 (and XenServer, by the way) repositories disappeared. It appears that Dell will not support the RHEL5.x brands anymore. The proper solution is to install the last 7 SrvAdmin tools, as can be shown in this site. This solves the problem…
I will discuss the issue of placing a Linux machine as a router, and some special cases where things might play a bit different. The most common scenario is of placing the Linux as some sort of PPP or DHCP-via-cables router. It might look like this: In this picture, the Linux machine actually recieves, via…
Well, the results weren’t for the hang, but were for the long while since it was last rebooted. Usually it’s around 2+ month between reboots, my desktop, and it leaves you with tons of questions as to what might happen when you actually boot up. Well, it never happens when you want it, or have…
After upgrading my laptop to 2.6.15.1 kernel, hibernation worked flawlessly. Running my previous version of kernel – 2.6.14.2, I have had some hibernation instabilities. I’ve had some memory corruptions here and there, which would have required I reboot the machine. So far, and it’s been a while, I’m glad to say I had no reason…
