Another small user interface suggestion
Dear Xine: since various modern sound systems are amply equipped toplay multiple audio sources at once, your 'mute' button should muteonly your audio, not the entire audio chain. That way I can turn downthe Internet music stream I'm listening to in the background in favourof something of more immediate interest, like YouTube videos, withouthaving to quit out of you entirely.
While we're here, it would be nice if you didn't block purely audiostreams just because you can'
the return of the repressed@電腦時代
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
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
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
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
從自己的宇宙
半夜失眠的人被諸種學名不一的死亡藤蔓纏繞。身份看來是渡過無岸之河的筏子,於是我上you-tube煲片選擇成為一個排球迷,潛心聆聽偉大的俄羅斯語。你知道俄羅斯的語言代表什麼嗎,那就是你很神心地上到俄羅斯的報紙、球