An unconventional reason for large RAID stripe sizes

Here's a surprising reason to have a really large RAID stripe size: toreduce per-spindle IO loads for random IO.

How and why this works is going to take some explanation. First,modern disks read and write very fast; what costs time isseeks. Random IO means lots of seeks. In random IO on a striped RAID,this means that any time you have to touch a new disk you pay anadditional seek cost. And you switch disks every time you cross astripe boundary.


我都知下面篇文又突然地長左

所以呢個post短d。淨係薦文。

1. 呢篇文的heading不甚吸引 ,但文章中後段談了很多傳媒運作的內幕,留言中更有署名心戈的一段留言,討論傳媒客觀中立的問題,請各位留意,copy低做日後論辯的資源。行家一伸手,便知有沒有。

2

電台訪談

再次因為 2005 Blog 事回顧 而接受了訪問,這次是香港電台的 原林部落 ,主持人在 Hong Kong Bloggers Group 看到 Sidekick 貼了我的文章,所以想找我做了一個電話訪問。與 上次開台 不同的,今次只談十數分鐘,比較輕鬆。

在錄音前,主持說不會全部事


2005 個人電影列表

回看一下 2005 年看己看過的上映電影:

Jan

Feb

March


雜碎


小脂的文章越來越精彩,叫我汗顏,對於讀書深刻的人我向來佩服,他現在逍遙於網上似乎最好不過,沒有了報章出版的壓力果然如魚得水,問題是:澳門有大量想讀這種文章的人是不上網的,小脂越寫越勇,其實也反證了澳門

中秋.新年.單行

1月10日觀塘法院外百人絕食支援反世貿被捕人士,我沒有參加(因為怕再出糗)。九點鐘到達之時,晚會已經接近完結,傳媒也已撤走。

我以為絕食的都是自己友,我以為已經沒有人關心被拘捕人士的事了。誰知一來到,發

20060112網摘 – 「亞力cool」

Search Engine

Development

Resource


How not to set up your DNS (part 7)

Presented in point form, because the illustrated form is too verbose:

  • The subdomain bos.netsolhost.com has nameserversNS1.bos.netsolhost.com and NS2.bos.netsolhost.com.
  • according to the nameservers for netsolhost.com, these have IPaddresses 205.178.146.11 and 205.178.146.12 respectively.
  • according to 205.178.146.11

On not logging things

One of the machines I help look after is an open, read-only Usenetserver (details here ; the openaccess is a 'because we can' thing). You might be surprised to knowthat the server logs only minimal information about NNTP sessions, andthis is a deliberate action that required hacking the software a bit.

When I was setting up the machine and planning open access foreveryone on campus, I found myself thinking about how I'd feel if, forexample, some day a department


我應該關心什麼?


立法會明日投票決定是否就東亞運開支問題展開聽證程序,我是關心的。

因為鹹潮,我家的膠樽堆積太多,不利於環保,我是關心的。

媽媽生日,明晚宴請親友,不知新試的酒樓味道如何,收費怎樣,我是關心的。

有傳李澤佳有