Why I'm mostly out of the email (anti-)spam game
I was once fairly interested in and involved in anti-spam stuff; I spenta bunch of time on anti-spam precautions here, followed news sources,and so on. These days, I find myself much less involved, and althoughI still care about various spam issues, I don't spend very much timeinvolved with the whole field.
What happened is simple: somewhat to my surprise, the spam problemhere was pretty much solved when we deployed a commercial anti-spamsolution in combination with greylisting
Thinking about uses for (system) activity tracers
System activity tracers are a hot topic, with the best known one beingSun's DTrace. In thinking about this issue recently, I believe thatthere are three sorts of questions that they can be used to answer,or at least that I'm interested in having answered:
- what is my system doing?
Performance related tracing is one obvious subset of this, both inthe 'what is taking all the time' sense and in the 'how long doessome operation take' sense.
- why is my system
周日一個人在冠男軒飲早茶
在此立誓
文學旅遊驚喜
tonight..
5號,11號,7號,6號
最上鏡:
3號,4號
國際親善:
5號
改變
長短句
One consequence of Linux's dynamic network device naming
I knew that Linux did dynamic network device naming , but one consequence of that only really sunkin recently. Dynamic naming is relatively predictable for interfacesthat are always on (especially when various distributions work hard to make them verypersistent), but where it can really surprise you (and your software)is when the interfaces are dynamic. Like, say, PPP interfaces.
Just like Ethernet interfaces, the first active PPP connection gets ppp0 , the second one gets ppp1 , and so on. But unlike Ethernets