数码相机–Canon 910 IS

拖倪晓波同学在日本买了佳能最新款的数码相机，果真要比国内的行货便宜1000左右，回家用了一下，效果不错！！感谢倪同学：）这次如果能去美国的话，我就可以拍很多照片，分享给大家！！我的拍照技术还有待这次检验…….

今天去交了签证费，780，是便宜了20块，但是还是觉得很贵。。。。而且美国的拒签率仍居前几位，所以能不能签成功，真的要有些运气在，老天保佑！

签证日期提前了–11/6

希望可以成功！！因为我没有任何移民倾向。。。。。外国始终是外国，家始终是家：）

开源的文本比较工具-textdiff

简单分享之：http://www.angusj.com/delphi/textdiff.html

Regular expression

工作中参数化经常用到，随便找了一个做备查，故贴之： http://www.phpe.net/articles/151.shtml

成功安装Loadrunner

这次安装正版的Loadrunner，还有点不太适应：）而且使用的是电子license，需要惠普进行配合生成永久的key，所以步骤要繁琐一些。

这次我采用的是contoller（Full install）+ remote load generator的结构，为了能尝试一下在局域网内，可以互相通信，进行分布式压力测试。

1.增加远程的load generator需要将远程的机器名完整的写进contoller，以便它可以在局域网中寻找。

2.将远程的load generator service 打开，并且保证开启agent的终端服务，这样才可以两端进行通信

3.如果没有防火墙的话，防火墙选项不要选择

今天开始装loadrunner

今天开始装正版的loadrunner，说实话我真的不喜欢这个所谓的市场占有率第一的工具。。。。不知道为什么，虽然试用下来是很强–把许多方面的功能都集成于一体，但安装以及设置的繁琐，使得我渐渐失去些耐心。

而且对电子许可还不是很熟悉，客服的电话经常打不通，上海的客服热线居然是空号！！

不知道是怎么了，难道被收购的企业都会走向没落。。。。。。。

预约到了签证面谈时间，不过太晚了。。。

今天终于在打爆一张卡的情况下预约到了11月19号的签证时间，不过太晚了。。。。

没有一点可以高兴的原因，不过还是有点庆幸自己还是能约到的，希望奇迹可以发生！祈祷中

Google performance testing also using open source!

网上关于Google公司进行性能测试的心得的视频是Goranka Bjedov在伦敦一次论坛中录下的，不过那么好的视频实在是声音太小，所以效果大打折扣。。。。。

不过今天在InfoQ上看到了她关于性能测试的帖子，仔细进行拜读，发现很多共鸣（哈哈），很高兴能和这位大师on the same page，lol

现在把他的文章概括如下：

what performance engineer usually feel:

1. fear :when the performance job is coming in

2.inadequacy: when we are not getting anything done

3.confusion:what should i do next

what performance testing should contain:

Speed- does the system respond quickly enough

capacity-is the infrustructure sized adequately

scalability-can the system grow to handle future volumes

stability-does the system behave correctly under load/for a long time

to do performance as a service:

she is more focus on service side and no worry about the client side behavior

she think that should be function QA’s work（this is a big difference between steven sounders and Bjedov or between Yahoo! and Google）

Can not do everything accurately, just 90% important information by applying 10% of total effort and time

There is no fixed answer on your performance, and we can not wait for everything to be clear, or spend long time to find what’s the relationship between each two or each three factors

Create benchmarks:

Got current usage pattern or user modeling of application,ideally

run the benchmark with different loads and investigate its behavior, including:

– Which transactions are taking most of time? (losing index)

– Which transactions seem to get progessively worse with increasing load?(create meeting, list page)

– Which transactions seem unstable (create meeting using same account)

– repeating testing until convinced I am observing real system behavior(consistently up?)

Create new benchmark with dev and run the benchmark every day

so we can find out the problem as soon as possible, ideally the next day

we can easily find a code change that has impacted performance in an unacceptable way

When find an issue that can not be explained or understand with performance tests

here comes the performance profiling and tuning activity

(you should learn to do isolation work, step by step)

Open source tools

Jmeter,Google is using， Me too：）

Monitoring your service during performance testing(Minimun SET)

CPU%

Memory/GC%/Heap graph

I/O utilization

Network utilization, eliminate your network factor as much as you can. It can make things easier.

In addition:

Exploratory performance testing in the future

mike kelly:They open a browser while a test is running and they see what the user experience is for them while the application is under load.

cygwin tool for statistics analysis

cygwin是我在进行性能测试结果分析或者是日志分析的时候用到的。Levi兄帮助我用这个工具写了一些脚本，便于我对大数据量的统计处理。

护照办好了，签证又成了问题！！

护照通过家里人的努力，真的办得还算快了，实际的办理时间只用了3天！！！速度之快是我没有办法想到的。在此有一个提醒给大家，如果落户地不满2年的，当地公安局会去发函调查你的上一个户口所在地的情况，一般会花5-10个工作日，大家要记着提前申请护照，也做好心理准备。

今天打电话准备预约美国签证，运气很被，名额已经占光，需要等下批发放的名额！！郁闷，怎么出个门就那么难呢？

主管告诉我要每天打电话去问，我很受鼓舞：）至少还没有放弃我的迹象。但是电话费/。。。。

心都抑郁了。。。。。台风Rosa来了，天气凉快多了