Tag Archive for 'linux'

May27th2008

Quick Storage Tip

Ever wondered where all that disk space has gone? Why the 100GB drive is not 100GB? Well apart from some systems using GiB and others GB and then some manufacturers using base10 and not base3 and saying that 1GB is 1000MB and not 1024 – I have found another one. When making a file system […]

Mar8th2008

Open Office Conference Confirmed for Beijing

Yay! Go read www.beijinglug.org for more. Now if only IDG could put on a half decent Linux World instead of the token crap they excrete out like a constipated hippo.

Jan9th2008

China an inefficient truth

I read this entry over on David Wolf’s blog before my recent trip back down under about power usage and IT infrastructure. Silicon Hutong And the topic did strike a “Hey this is real man!!!” kind of chord with me. A cathartic resonance that shall never come from me with respect to the greater greenhouse […]

Nov18th2007

Drive Roaming. DELL PERC4 Controllers

During a recent test run to see if a new PostgreSQL back end server would hasten things up in a main cluster – that has now become CPU bound and NOT IO…… the wizardry of that I will blog about later. In any case, the short of it is, that we were juggling PERC4 cards […]

Nov5th2007

gam_server ruining your IO throughput? Context switches hitting 8,000 a second?

This hit me today. The “gam_server” process. Set to identify when any file in the system is changed. A useful action that has benefits. But not when it does it 3-5 times per second and the sever is serving NFS and PostgreSQL! To fix it, just ensure that somewhere in /etc/ (RedHat Base) or /etc/gamin/ […]

Nov3rd2007

ICP Certificates, Beijing Linux User Group Compliance

Well, the thing is, in China, you have to have a licence to have a website, called an ICP. It costs money if you are commercial, even more money if an e-commerce site, as well as a bank deposit with a certain amount of registered capital. For non commercial entities it is free and no […]

Oct7th2007

When 73GB is not 73GB! Enter LVM

Thought I should write something tech for a change! 😉 It is golden week here and all are away on break. So instead of forcing a staff member to come back, I thought I would take care of some stuff myself. My problems started when a client who has a large advertising cluster, was running […]