剛剛見 拙劍園主 投訴新版 Blogger.com 有留言和轉碼的問題，好奇之下開其留言 Popup 一看，又再好奇之下一按那個留言 CAPTCHA [註] 的輪椅圖案。
我看到的是「psvfg」，但我聽到的是「38167312」，還以為是不是出錯了？即管一試用後
A sysadmin twitch about dump
In dump (and ufsdump, and other close cousins) you can specify thefilesystem that you want to dump in two ways: by the name of itsmountpoint, or by the name of the (raw) device that it's on. One ofmy little twitches is that I always specify thefilesystem to dump by its mountpoint. Like a lot of my little twitches,this has a history behind it.
The problem is that at least some old versions of dump were perfectlywilling to write their output to
20070204網摘 – 我地呢班打工仔
我地呢班打工仔
- 這會不會是句不簡單的口號？ Quote: 即使你教育水平不高，完全不懂政治，也會覺得「打好份工」這句話在道德上站得住腳，默默認同——那已非常足夠，因為我們根本沒有選票，既然如此，特首的管治權威就是來
Weekly spam summary on February 3rd, 2007
This week, we:
- got 15,790 messages from 280 different IP addresses.
- handled 23,657 sessions from 1,340 different IP addresses.
- received 248,408 connections from at least 73,118 different IPaddresses.
- hit a highwater of 17 connections being checked at once.
Volume is up again from last week ,although the number of different IPs is down slightly.
| Day | Connections | different IPs |
| Sunday | 28,8 |
週末派對
1. 文靜的真正行動之殘廢餐
之前已經貼過 表格的link ，如果一頁紙都唔識填， 2月3日星期六 11:30 - 18:00，干諾道中通往原天星碼頭行人隧道口，會有人擺街站教你填。識填的過去做義工亦得。
為了鼓勵更多市民表
無題
之一
雜誌出了新一期，開心。
個人推薦“我愛沖咖啡”一文，看完了，會覺得年輕人還是對自己有要求的，雜誌出版之前，我也把這篇報導的內容跟一些年輕人交流，他們也很認同這個故事。我喜歡這樣的少年心聲，祥子，你這
雜誌出了新一期，開心。
個人推薦“我愛沖咖啡”一文，看完了，會覺得年輕人還是對自己有要求的，雜誌出版之前，我也把這篇報導的內容跟一些年輕人交流，他們也很認同這個故事。我喜歡這樣的少年心聲，祥子，你這
A modern environment's need for broadband
I have an embarrassing confession: my home Internet connection is stilla dialup 28.8Kbps PPP link. (Back when I first set it up, this was onlyslightly behind the times, as 33.3Kbps modems had just come out.)
For a long time this was fine, because all I really did with it wastext-based stuff, mostly sshing to my machines at the university; whileI did do some web surfing, pretty much all of the sites I visitedregularly were
Why don't SQL servers do a lot of caching?
Recently, nothings askedan interesting question in a comment here :
[...] why, under the hood, deep down, is something like memcachednecessary? Why isn't the SQL server's cache as effective?
I think that one of the reasons for this is that highly aggressivecaching in an SQL server is much harder than it looks.
In database servers, caches have to be transparent ;non-transparent caches would implicitly break ACID guarantees. Now contemplate theproblem of completely correct cache invalidation that
我是「螺絲人」
古巨基有首歌：「其實我想講清楚…想講清楚…想講清楚…該怎說好？」，完全可以體現在我身上。
事緣最近有兩件事，小弟都有份出席，要說說話，但一聽就知口齒不清，思路混亂，不停「食螺絲」。第一件是三聯搞的《How we
Transparent versus non-transparent caching
One of the divisions in caching is between what I will call transparentand non-transparent caches. Transparent caches are ones where the onlything you are supposed to notice is faster speed; non-transparent cachesrequire you to manage them explicitly, especially cache invalidation.Operating system disk caches are an example of transparent caches, atleast in theory.
(At some level every cache is non-transparent, because it has to bemanaged by someone's code. So this is just a question of how a cache