All posts by kmd

使用 Certbot 維護內含多個子網域的單一憑證

前言

Let’s Encrypt 推出至今一年多,受到廣大用戶的歡迎,它的官方用戶端也隨著功能演變與更新也改名為 Certbot

使用初期,為了加深對子網域個別的控制,因此採用憑證與子網域一對一對映的策略;但隨著子網域成員增加,每次逐一更新便顯得很沒效率。

本文將示範如何把多個子網域納入單一憑證,以及後續維護。

Continue reading 使用 Certbot 維護內含多個子網域的單一憑證

Ubench of Home Server 2017

New hardware for home server upgrade is finally arrived.

Intel Pentium G4560/FreeBSD 11.0-RELEASE-p9 (2017-04-26)
Lower frequency, but ~12% improvement in multi-thread, and 5% in single thread then my 2016 rigs.
Ubench:

Display build time in Visual Studio

Just got the new VM server ready, but I’m curious about how fast it is in my general use case. So I managed to find the settings to let Visual Studio show build time of projects.
Continue reading Display build time in Visual Studio

OS X 10.11.5+ 及 macOS Sierra SMB 效能低落的問題

背景

聽聞 macOS Sierra 之後的版本將以 SMB 3.0 作為建議的檔案分享方式,於是趁著放假把自家伺服器升級到 samba 4.4,簡單以 gigabit ethernet 測一下傳檔發現速度卡在 30 – 40 MB/sec。

診斷

AFP 傳檔很正常,大約 120 MB/sec;只有 SMB 傳檔效能低落,約 30 – 40 MB/sec
Continue reading OS X 10.11.5+ 及 macOS Sierra SMB 效能低落的問題

Ubench of Home Server 2016 (updated)

New hardware for home server upgrade is finally arrived.

Intel i3 4160/FreeBSD 11.0 (2016-11-20)
Wow! 2x improvement after upgraded to FreeBSD 11.0!
Ubench:

Intel i3 4160/FreeBSD 10.2 (2016-01-03)
Ubench: