My trusty and ol’ VMware server was serving me well since quite some time by now, but to be honest, RAM was always an issue on those boxes. 32 GB namely aren’t much. This time I got myself a late xmas present pushing some more RAM in. Quite cool to experience the boost due to less memory-over-commitment.
Tag: server
Show the TCP connections made
This is a small snippet which has helped me on my server; showing you the top tcp connections made: netstat -atun | awk ‘{print $5}’ | cut -d: -f1 | tail -n+3 | sed -e ‘/^$/d’ |sort | uniq -c | sort -n -r Nothing funky, but a life saver sometimes ;)
Network too intelligent
Lately, working with Windows 7 I noticed a cruel transmission rate of 200 B/s while fetching a file from a local server over a highspeed connection. No, I didn’t have a typing error in there, it’s 200 Bytes per second; that’s even slower than GPRS! I guess we agree on the fact that there’s something wrong on the […]
Suspect things going on
It’s not a secret that I tend to dislike apple for the way they raped BSD to get it useable for the masses, but what they do to me from the programmers point of view, is insane. Let’s start out with a simple MAMP installation (Mac, Apache, MySQL and PHP) and a plain system() call in php: system(“kill […]
Small things with a huge effect
Every time computers are running smooth and things are looking fine and you think of looking at the items at the top of your Todo-list, things that you should have done weeks ago but couldn’t because of things preventing you, another one of such blockers kicks in: something does not work. But IT work can be a bitch […]
The schizophrenic DNS
Today I’d like to introduce a small, but pretty useful feature of nameservers using BIND as an example. Delivering different answers for different IP ranges. Sure, this might sound strange, but if you dig into that, it’s pretty useful.