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FreeBSD 7.0-RELEASE了

引用http://www.freebsd.org/releases/7.0R/announce.html

Date: Wed, 27 Feb 2008 17:19:52 -0500
From: Ken Smith kensmith@FreeBSD.org
To: freebsd-announce@FreeBSD.org
Subject: [FreeBSD-Announce] FreeBSD 7.0-RELEASE Available

The FreeBSD Release Engineering Team is pleased to announce the availability of FreeBSD 7.0-RELEASE. This is the first release from the 7-STABLE branch which introduces many new features along with many improvements to functionality present in the earlier branches. Some of the highlights:

Dramatic improvements in performance and SMP scalability shown by various database and other benchmarks, in some cases showing peak performance improvements as high as 350% over FreeBSD 6.X under normal loads and 1500% at high loads. When compared with the best performing Linux kernel (2.6.22 or 2.6.24) performance is 15% better. Results are from benchmarks used to analyze and improve system performance, results with your specific work load may vary. Some of the changes that contribute to this improvement are:

FreeBSD

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受保護的內容: WinAgents.MIB.Browser

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rrdtool create 網路圖表檔案

rrdtool create test.rrd -s 300 \

DS:if02:COUNTER:600:U:U \
DS:if03:COUNTER:600:U:U \
DS:if04:COUNTER:600:U:U \
DS:if05:COUNTER:600:U:U \
DS:if06:COUNTER:600:U:U \
DS:if07:COUNTER:600:U:U \
DS:if08:COUNTER:600:U:U \
DS:if09:COUNTER:600:U:U \
DS:if10:COUNTER:600:U:U \
DS:if11:COUNTER:600:U:U \
DS:if12:COUNTER:600:U:U \
DS:if13:COUNTER:600:U:U \
DS:if14:COUNTER:600:U:U \
DS:if15:COUNTER:600:U:U \
DS:if16:COUNTER:600:U:U \
DS:if17:COUNTER:600:U:U \
DS:if18:COUNTER:600:U:U \
DS:if19:COUNTER:600:U:U \
DS:if20:COUNTER:600:U:U \
DS:if21:COUNTER:600:U:U \
DS:if22:COUNTER:600:U:U \
DS:if23:COUNTER:600:U:U \
DS:if24:COUNTER:600:U:U \
DS:if25:COUNTER:600:U:U \
DS:if26:COUNTER:600:U:U \
DS:if27:COUNTER:600:U:U \
DS:if28:COUNTER:600:U:U \
DS:if29:COUNTER:600:U:U \
DS:if30:COUNTER:600:U:U \
DS:if31:COUNTER:600:U:U \
DS:if32:COUNTER:600:U:U \
DS:if33:COUNTER:600:U:U \
DS:if34:COUNTER:600:U:U \
DS:if35:COUNTER:600:U:U \
RRA:AVERAGE:0.5:1:603 \
RRA:AVERAGE:0.5:6:603 \
RRA:AVERAGE:0.5:24:603 \
RRA:AVERAGE:0.5:288:603 \
RRA:MIN:0.5:1:603 \
RRA:MIN:0.5:6:603 \
RRA:MIN:0.5:24:603 \
RRA:MIN:0.5:288:603 \
RRA:MAX:0.5:1:603 \
RRA:MAX:0.5:6:603 \
RRA:MAX:0.5:24:603 \
RRA:MAX:0.5:288:603

rrdtool

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rrdtool 實作6台主機 LOADING 繪圖

rrdtool graph test.png \
–start=-86400 \
–end=-300 \
–base=1000 \
–title “大安 UBR CPU負載” \
–height=120 \
–alt-autoscale-max \
–lower-limit=0 \
–slope-mode \
-n TITLE:12:/usr/share/fonts/truetype/bsmi00lp.ttf \
–font DEFAULT:0:/usr/share/fonts/truetype/bsmi00lp.ttf \
DEF:c1=$rrd_data:c1:AVERAGE \
DEF:c2=$rrd_data:c2:AVERAGE \
DEF:c3=$rrd_data:c3:AVERAGE \
DEF:c4=$rrd_data:c4:AVERAGE \
DEF:c5=$rrd_data:c5:AVERAGE \
DEF:c6=$rrd_data:c6:AVERAGE \
COMMENT:”主機     ===最大值=== ===平均值=== ===最小值=== ===目前=== \n”     \
LINE1:c1#000080:”01負載” \
GPRINT:c1:MAX:” %5.0lf ”     \
GPRINT:c1:AVERAGE:”   %5.0lf ”     \
GPRINT:c1:MIN:”   %5.0lf ” \
GPRINT:c1:LAST:”    %5.0lf” \
COMMENT:”\n”    \
LINE1:c2#0000FF:”02負載”:STACK \
GPRINT:c2:MAX:” %5.0lf ”     \
GPRINT:c2:AVERAGE:”   %5.0lf ”     \
GPRINT:c2:MIN:”   %5.0lf ” \
GPRINT:c2:LAST:”    %5.0lf” \
COMMENT:”\n”    \
LINE1:c3#008000:”03負載”:STACK \
GPRINT:c3:MAX:” %5.0lf ”     \
GPRINT:c3:AVERAGE:”   %5.0lf ”     \
GPRINT:c3:MIN:”   %5.0lf ” \
GPRINT:c3:LAST:”    %5.0lf” \
COMMENT:”\n”    \
LINE1:c4#00ff00:”04負載”:STACK \
GPRINT:c4:MAX:” %5.0lf ”     \
GPRINT:c4:AVERAGE:”   %5.0lf ”     \
GPRINT:c4:MIN:”   %5.0lf ” \
GPRINT:c4:LAST:”    %5.0lf” \
COMMENT:”\n”    \
LINE1:c5#800000:”05負載”:STACK \
GPRINT:c5:MAX:” %5.0lf ”     \
GPRINT:c5:AVERAGE:”   %5.0lf ”     \
GPRINT:c5:MIN:”   %5.0lf ” \
GPRINT:c5:LAST:”    %5.0lf” \
COMMENT:”\n”    \
LINE1:c6#ff0000:”06負載”:STACK \
GPRINT:c6:MAX:” %5.0lf ”     \
GPRINT:c6:AVERAGE:”   %5.0lf ”     \
GPRINT:c6:MIN:”   %5.0lf ” \
GPRINT:c6:LAST:”    %5.0lf” \
-h 120 -w 500 -v “百分比 %” –no-minor

rrdtool

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RRDtool

為 MRTG 進階版，原 MRTG 作者覺得 MRTG 有缺點(例如無法一個流量圖集合所有相關要統計的數據)所以便又著手開發 RRDTool，RRDTool 一樣是利用 SNMP 協定，去偵測有提供 SNMP 資訊的設備來畫出數據統計流量圖，原 RRDTool 1.0.x 版本時時是利用 GD 來畫出數據統計流量圖，在 RRDTool 1.2.x 版本之後作者為了使數據統計流量圖能匯出 PDF 文件格式，因此便改為使用 libart 及 freetype 來畫出數據統計流量圖(雖然效率慢很多)，但因為 rrdtool 語法必須要深入研究因此有人利用 php 寫出 [cacti] 這軟體使您比較容易控制 rrdtool，同時也有許多的 cacti plugin 可以使用，本篇實作也是利用 cacti 來控制 rrdtool作說明。

cacti rrdtool snmp

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MySQL Master/Slave Server (Replication Database)

MySQL 提供 Master/Slave 機制讓您輕易的完成多個 MySQL Server 之間的資料同步，有了多個資料同步的 MySQL Server 在管理上會較有彈性，例如你可以建置備援主機或是進行負載平衡等等。但是要注意：一台 Master Server 可以擁有很多台 Slave Server；但一台 Slave Server 只可對應到一台 Master Server。

Master mysql Replication Database Slave

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