车东@FlickR posted a photo:

更多精彩记录：
cityphoto.blogbus.com/

博客大巴的品牌之道：跨界。倾城
weiwuhui.com/949.html

“大同·视界”你我的努力
xnet.blogbus.com/logs/31383655.html

纠结了2个月的摄影展结束了
jeffs.blogbus.com/logs/31371825.html

我的眼神背叛了我的心
xialei.blogbus.com/logs/31371884.html

【大同·视界】摄影展酒会掠影
carefen.blogbus.com/logs/31369743.html

我们的摄影展
hengge.blogbus.com/logs/31367797.html

久违的周六
flowerfei.com/20081115/saturday.html

横向扩展集群使用的最流行的开放源码监视工具包括： * Nagios * Ganglia * Cacti * Zenoss * CluMon 我们可以说这些工具的实现大多利用了 RRDtool。CluMon 还在底层使用 Performance Co-Pilot (PCP)，PCP 也很流行。xCAT 在未来的版本中将支持 Ganglia 和 PCP。

今天收到一封邮件：是twiki项目的负责人Peter Thoeny写给我的，就像MT(perl)被php的WordPress(php)超过一样，其实TWiki相对于MediaWiki, Dokuwiki，甚至Trac/moinmoin等Python引擎的wiki系统近几年的发展都是落后的。 In recent months, it became apparent that the community lacked clear leadership and was moving toward a "Debian" style of governance, which we do not believe would be healthy for the long run interests of the community. 开源项目虽然相对平等，但是还是需要非常需要集中化的组织和领导的，The major areas of focus are: 近期需要确定的主要目标是 * 面向协作的全面需求，Addressing the full range of enterprise Web 2.0 collaboration needs (not just the wiki). * 开放标准 Setting clear open standards that encourage 3rd party contribution - think the enterprise equivalent of OpenSocial * 企业级支持： 结构化存储，和Sharepoint的支持 国际化等 Expanded enterprise features (MySQL backend, SharePoint integration, full internationalization)

FireFox总是想缓存的更多； In order to ensure consistent caching behaviour with IE and Firefox you should: * Always specify an Expires header. It will normally be set to -1 for immediate expiration of HTML pages or a date well into the future for other resources such as images, CSS and Javascript * If you want to force a page to be reloaded, even with the Back button, then use Cache-Control: no-cache, no-store

Phase 2 : Now process new records (Flush history on disk after 20000 hosts)...
Flush history file on disk (unique url reach flush limit of 5000)
Flush history file on disk (unique url reach flush limit of 5000)
Flush history file on disk (unique url reach flush limit of 5000)
是AWStats统计常见的输出，每行都是在处理完一定数量的URL(缺省是5000个)后，AWStats将统计结果临时写入磁盘。最近使用AWStats处理百M级别的日志时：磁盘IO居然非常高，
发现有时候遇到页面URL个数非常多的时候（比如：在搜索引擎蜘蛛对网站进行深度遍历deep crawl时），经常会使得AWStats对缓存文件的读写过于频繁，随着生成的数据文件越来越大，每次几百M的临时文件读写也会导致统计速度越来越慢；经常一次统计数据下来会Flush history file on disk (unique url reach flush limit of 5000) 几百次；

记得以前是对AWStats进行过简单的参数配置的，可以修改flush的周期，但现在的文档中没有找到相应的配置，只好Hack了一下：awstats.pl文件将每隔发现5千个新链接改为5万个；

> $LIMITFLUSH=5000; # Nb of records in data arrays after how we need to flush data on disk
---
< $LIMITFLUSH=50000; # Nb of records in data arrays after how we need to flush data on disk

其实内存够用的话，将这个值设置的更高也是没有问题的。根据观察临时文件生成的次数也相应的有数量级的下降；这个参数和Lucene中的merge_factor有点像，都是拿内存换速度；

The individual session-based indices are defined as follows (and these are slightly updated from past posts on the subject): * Click-Depth Index (Ci) is the percent of sessions having more than “n” page views divided by all sessions. * Recency Index (Ri) is the percent of sessions having more than “n” page views that occurred in the past “n” weeks divided by all sessions. The Recency Index captures recent sessions that were also deep enough to be measured in the Click-Depth Index. * Duration Index (Di) is the percent of sessions longer than “n” minutes divided by all sessions. * Brand Index (Bi) is the percent of sessions that either begin directly (i.e., have no referring URL) or are initiated by an external search for a “branded” term divided by all sessions (see additional explanation below)

车东@FlickR posted a photo:

你遇到过吗？ 我现在几乎天天遇到，而且要点击2次否才能关闭。

不得不在hosts文件中加了一个
127.0.0.1 msn.allyes.com

更新后的AWStats最新版本lib目录打包下载，蜘蛛定义部分增加了区分Yahoo!中国，Soso 豆瓣，鲜果等，其他的是几个国外的RSS阅读器；搜索引擎部分区分了百度图片，有道搜索，soso搜索； diff附后：

You can also set the expire_logs_days system variable to expire binary log files automatically after a given number of days (see Section 5.1.3, “System Variables”). If you are using replication, you should set the variable no lower than the maximum number of days your slaves might lag behind the master. So you could set up a weekly cron job like: 0 9 * * mon mysql -uroot -e "PURGE MASTER LOGS BEFORE DATE_SUB( NOW( ), INTERVAL 31 DAY);"

是几周前跆拳道活动后，同事问的我一个心理测试题；

你的反应是什么？这个测试的来源我没有查到，因此也无所谓标准分析结果。