記憶隨身
和人大吵的時候,對方說「道歉對你而言是沒有意義的」,我心想你小子怎麼知道,我和你可沒那麼熟。後來我找到了這段書鈔:
然而,「抱歉」是多麼詭異而歧異的一個語彙,所有的抱歉之語(對不起、我錯了、失禮、請見諒
The fun of 32-bit bugs
As computers (and disk space, and memory, and etc etc) get larger, thequantities that we deal with routinely get bigger too. And when they getbigger, fun things start happening.
Today's fun thing was that I doing some measurements of disk IO speed ona machine with 2 gigabytes of memory. My usual rule of thumb is to workon at least twice the amount of main memory to crush cache effects, whichmeant I was telling my benchmarking program to read and write 4 GB.
曖昧的網上言論.曖昧的我們
書癡必讀:談傅月庵《天上大風》
作者:傅月庵
出版:遠流出版社,2006年4月
《天上大風》是一本優雅的書,教人愛不釋手。讀這本書不可能心急,只適宜逐字逐句慢慢享受,說是享受,相信重視排版的傅月庵在決定此書每一頁的編排時,
Hardware RAID versus software RAID
Here's a good argument-starting question: which is faster and/orbetter, hardware RAID or software RAID?
A lot of conventional wisdom says hardware RAID, but I mostly disagree.Let's ask the inverse question: how (or when) can hardware RAID befaster than software RAID?
If you're doing RAID-5, the hardware could do XOR faster than your CPUcan. But in modern systems XOR performance is pretty much constrainedby the memory bandwidth, not CPU power. It
圓形的父親
嘉賓:呂大樂
呂大樂先生笑起來十分甜美,而我每次看見呂生,都會感受到某種「hku的高貴」,一種帶著尊嚴的距離,把我的無聊吵鬧像罩層紗幕般隔起來。但看呂生的文章,總是感受到那種冷面裡的熱
如此少女的我在東touch
The importance of numerical literacy
Via Slashdot comes a report of a new biometric airport security system for detecting'hostile intent' (their term). According to the Wall Street Journalarticle:
In the latest Israeli trial, the system caught 85% of the role-actingterrorists, meaning that 15% got through, and incorrectly identified8% of innocent travelers as potential threats, according to corporatemarketing materials.
The company's goal is to prove it can catch at least 90% of potentialsaboteurs -- a 10
Distributions: keep your hands off vi
Dear Linux distributions: if I want to use a freaky super-intelligenteditor I am perfectly able to fire up emacs myself, or even type ' vim 'instead of ' vi ' (honest, the extra letter is not too much for me totype). I want vi . You know, the simple and predictable thing thatsystem administrators like because it behaves.
As an aid to your planning, here is a minimum feature for any editorcalled vi :
When I paste things into an alleged
viin insert