How many uberblock copies ZFS writes on transaction group commits

The ZFS uberblock is the root of the tree of ZFS objects in a pool(technically it is more a pointer to the root, but it's how ZFS findseverything). Because it is the root, it has to be updated on every ZFSupdate. Also, because it is so important ZFS keeps quite a lot of copiesof it (and has a clever 'copy on write' scheme for it, so that it is notquite updated in place).

Given the impact of writes on mirrors


發問

是香港人,忽然同情嗎?

請不要批評香港人吧,天災人禍的確每天都在發生,甚至在一次水災裏死的,要比起在巴士裏遭槍殺的多百倍,過程也許更驚恐,希望亦更渺茫,而他們所面對的拯救不力、人為錯誤、政治陰謀都令人髮

八月蘋果(2010)

《 遇 上 5 % 的 男 孩 》


你和他,根本是絕無可能的人,較鵲橋相會更虛無飄渺。你仔細思量,逐一寫下有機會相遇的名字,屬於他的筆畫,肯定在一億個以後。那天,雨兇狠的下個不停,黑色暴雨警告也發出了,若非出門前的一刻

Bio Hazard Remake / Resident Evil Remake 武器與子彈 (Weapons and Bullets)

遊戲中所有武器與子彈的組合、圖像及名單
及本人對武器與子彈的主觀分析與描述

圖片/名稱描述藏彈數量攻擊速度上彈速度
見下文
基本武器,Jill初期武器之一
對喪屍威力非常低
能無限使用的正常武器
攻擊距離非常近,在攻擊時比較
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聚散有時

自2008年2月12日開始,我在蘋果名采版有了一格專欄,每周一篇。

這兩年多來,在那裡寫過生活點滴,也記下許多心事。

聚散有時,今天那篇《下雨天》是最後一篇了。

謝謝你們一直的愛護支持,希望有天,我們會再見

Bio Hazard Remake / Resident Evil Remake 回復藥物 (Recover Items)

遊戲中所有回復藥物的組合、圖像及名單

圖片/名稱描述
見下文 回復100%生命值
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The Texas Play

I am always a big fan of Texas Holdem, and recently the 2010 World Series of Poker has just started.

With the entry fee of US$40,000 (and my poor poker face), by no chance I could ever join this tournament in Vegas. Still, watching the highlights in youtube still offered me quite some excitement. No doubt one of this year's spotlight would be on the 21 years old Tom durrr Dwan, who has been such a young successful

步我後塵?

我現在天天練拳,一星期做三、四次體能和肌肉鍛鍊,但其實我從小到大都不喜歡運動,尤其是球類運動,那也是我童年不快樂的部份原因。

記得小學時同學約去踢足球,我踢得特別差,永遠都是做後衛,行行企企,間中見有球

The different between an SMTP proxy and a SMTP relay

This is one of those distinctions that is both obvious and obscure.

SMTP proxies and SMTP relays both sit between two machines; call themthe outside client and the inside mail server, as in the case of ourexternal mail gateway .

A SMTP proxy is synchronous . When it gets a SMTP connection from theoutside client, it establishes an SMTP conversation with the inside mailserver. When it receives a SMTP command from the outside client, itapplies its own processing (if any), sends the command on to the


回到未來的Nike夢幻號波鞋

還記得電影「回到未來」中這一幕嗎?

想當年,這對無需鞋帶,一按掣便懂自動按你腳型索緊的Nike波鞋,真的是當年不少年輕人的夢幻號哦。

根據科技網Engadget的報導( 原文 ),原來Nike最近已就該設計申請了專利,正在設計一款類似

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