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Update !
hotmail上不了？看这里it has been thousands of years since the last update. Not because of there is nothing to say, on the contrary, it is because too much to say that i have no idea of what to say the first and what to say the last. and obviously, i don't want to write a long novel about that all. maybe, it's a good choice to write on those "lists" instead of blog articles.
Well, these days, so many all SJTU guys cannot access hotmail, here i give you a screct way leading to your daydreaming hotmail.
http://mobile.msn.com/hm/folder.aspx that's the address, actually it's for cell phone users. thanks to the narrow bandwidth of the current GPRS, mobile msn hasn't embedded too much complicated services on it. (it seems, it's the fault of the Live Passport service that keeps you away from hotmail.) PS. mail attachment download is not supported on that mobile version, but you can forward the mail to another email account and download it there.） <<Hey jude>> take a sad song and make it betterIn 1968, John Lennon was living with Yoko Ono, and made clear his intention to leave Cynthia for her. McCartney was profoundly affected, and decided to cheer up John and Cynthia's son, Julian, by writing a little song for him while he was on his way to see them at their home. McCartney said later, "I started with the idea 'Hey Jules', which was Julian, 'don't make it bad, take a sad song and make it better. Hey, try and deal with this terrible thing.' I knew it was not going to be easy for him. I always feel sorry for kids in divorce. The adults may be fine but the kids... I had the idea by the time I got there."
好歌是需要灵魂的，Hey Jude很好得传递了一种精神世界，让我感到快乐 ^
└ the authentic version, 7:08.
歌词如下,可能有些小错误
hey jude don't make it bad take a sad song and make it better remeber to let her into your heart then you can start to make it better hey jude don't be afraid you'll may jude, go out and get her the minute, you let her under your skin then you begin to make it better and any time you feel pain hey jude , refain, don't carry the world upon your shoulder for well you know, that's a fool who plays it cool by making his world a little colder na na na hey jdue
don't let me donw you have found her, now go and get her remeber to let her into your heart then you can start to make it better so let it out and let it in hey jude begin, you waiting for someone to perform with and, don't you know that's just you
hey jude, you do, the movement you need is on your shoulder na na na hey jude! don't make it bad take a sad song and make it better remeber to let her run to you skin then you begin to make it better, better, better aaaaaah!! yyyyyyyyy~~~ na na na na ~~~ hey jude nnnnnnnnnnnnn hey jude nnnnnnnnnnnnn hey jude nnnnnnnnnnnn hey jude ju ju ju ju judy judy judy jude wow wow wow a ho ju ju ju ju ju~~~~~~~~~ na na na na , yeah yeah yeah, you know you can make it, you goona make it don't make bad, take a sad song and make it better hey jude, wow, oh~~~ ProcessorSleeping, Sun Yen Tzu's <Someone> playing, inspired me magically.
虽然没有听她在唱什么，但是突然就是精神百倍，毫不疲倦，全身的筋络似乎疏通了一遍，一种有点麻的感觉（不是肉麻的意思）从神经末梢汇至大脑，a!很舒服。我偶尔会有这样感觉，不知道是不是正常的，别人都有，应该有的吧。 应Spider多日之前的好奇和要求，来写一写计算机、处理器是怎么实现的。
i intend to write this in a down-top approach. maybe it's a bit boring at first, but it's a good way, i think. there is a fundermental course called, digital circuit. Everyone, find this courses extermely easy, it is, in fact, a course about logic and it's circuit represention. Basic semiconductor technology invented things like AND GATE, OR GATE, NOT GATE, some thing like that. they are basic( but sufficient) operations about binary information. the reason why they are sufficient operations could be proved in theory, any logic expressions can be expressed in terms of AND, OR & NOT. so anything in reality, if could be expressed by 1's and 0's, then it can be implemented using that 3 gates. then, the digtal circuit researchers developed so many magic things about digit circuits, like Data Translator(transform ones from one form to another), MEMORY, BUS(data line), Data selector...
At the same time, semiconductor technology developed rapidly, mainly those what we called integrated circuit(IC), which made it possible to integrate millions, billions of GATES in a tiny space. Up till now, the most advanced semiconductor tech is 65 nanometer technology, which intel P4 is using. 65 nm denotes the average FEATURE SIZE(the average gate length) in a chip. For reference, AIDS virus is 120nm in diameter. so you can imagine how small it is.
//--------------------------------------------------
a processor is just a complicted digital circuit. in fact, i can only do simpliest things, like add, multiple, division and also, things even simpler like clear memory in chip. processor can only do instruction about registers and external memory. registers are memory inside the chip, but it's packed with other functions. certain registers can do calculations and memories don't. For example, if you want to do a addition, you need to put the number (in binary) to a register A, again, put another number in another register B. then tell the cpu to add B to A, then A is now A+B. (and there are other circuits put to deal with special occations such as Overflow(1000 plus 1000 will be out of the boundary of 4 digits) ). and in the end, you have to put back the contents in register A back to the external memory, thus finished an addition. wow, what a complicated work! yes, it's complicated, and i have to say that computers are in fact foolish, they are just machines. and they must relie on a faster frequency to let the time consumed on every instruction to be shorter. nowadays, the fastest processor has a frequency of 500GHz(BlueGene based on POWER architecture). wait, in fact, i still haven't explained why processors can do these calculation. as said, instruction tells cpu to do something. an instruction is, of course, a set of binary codes. in theory, if a cpu has N output pins and M input pins. the relationship between them can be defined by N equations, though they are extremely long expressions. give an example
let's assume that a cpu accepts instructions consists of 8*3 digits.(in fact 32, 64 or more). and, say, the first 8 digits specifies what kind of work it will do, addition or muliplication. and the next 8*2 digits denotes two objects the calculation concerns. assuming 0000 0001 is defined as the code for addition, when cpu's first 8 pins recieve it, the addition unit is activated, and others are closed. how? consider
There are 4 inputs in all, X1 X2 MULTIPLY and ADD. when the signal ADD is 1 and MULTIPLY is 0, Y = X1 add X2. (at this time the addition unit is what we called, activated. such an easy mechanism. well, there are lots of other things about computer, this post is only a kind of easy explanation. sometimes, i'd love to make diffculit things simple, but not too simple to be naive.
:] TOP500 List for supercomputersThe 27th TOP500 List was introduced during the International Supercomputer Conference (ISC2006) in Dresden, Germany. The No. 1 position was again claimed by the BlueGene/L System, a joint development of IBM and DOE’s National Nuclear Security Administration (NNSA) and installed at DOE’s Lawrence Livermore National Laboratory in Livermore, Calif. BlueGene/L also occupied the No. 1 position on the last three TOP500 lists. It has reached a Linpack benchmark performance of 280.6 TFlop/s (“teraflops” or trillions of calculations per second) and still remains the only system ever to exceed the level of 100 TFlop/s. This system is expected to remain the No. 1 Supercomputer in the world for the next few editions of the TOP500 list. Even as processor frequencies seem to stall the performance improvements of full systems seen at the very high end of scientific computing shows no sign of slowing down. This time the last 158 systems on the list in June 2005 are too small to be included any longer, which represents a lower than average turn-over rate after two record breaking rates in the last lists. However, the growth of average performance remains stable and ahead of Moore’s Law. TOP 10 Sites for June 2006For more information about the sites and systems in the list, click on the links or view the complete list.
Where is China?
Countries Share List: US 59.8% UK 7% JPN 5.8% CHINA 5.6%
首先把小日本搞掉! 有关 电子线路明天就要开始考试周了，打开电脑开始写space了。[好久不写了]
模电，其实又不难的，就没几个定理，考的都是杂七杂八的东西，不触及神经的，因为神经没法考。但是，这教材的确不太令人满意，很多东西不讲清楚，这点是和讨厌的，写一本书不好好写，真是的。虽然，这本童老先生写的教材已经堪称经典了，可能是因为比较基础，有的东西就不和你们小朋友讲清楚了吧。可是，不好这样欺负小朋友的阿~~~
有的哲学中把逻辑和数学从一般的科学之中分离开来。因为这些理论是高度抽象出来的真理，以至于不需要做什么实验，也没有什么实验可以做，这叫做common-sense.common-sence就是一般的逻辑了（逻辑是很简单的，假如有人新发明逻辑，那在世界上也不会有大用，因为否则人脑应该早就自发产生了，这种东西应该是自发的）。然后common-sense和一些事实经验空想出来很多很多东西，就是无穷无尽的数学了。近代的数学已经是比较obscure了，以至于我们学得数学都是几百年前就有的东西了。近代数学较难以理解，要等一段时间，等到baby生出来就被用那些obscure的东西造出来的amazing things包围的时候，那些babies就有希望了! 当然，数学家是很厉害的，什么Cauchy,Laplace,Gauss,（近代的知道很少）,空想出了很多东西。使我们不得不佩服，和赞叹。 说回来，工程的东西，基本全靠数学模型了，它们建立在实验的基础上。电路方面的工程牵涉到的数学还是比较复杂的，虽然真正做工程不需要数学研究多深入。因此，模电之类的东西，就变成数学应用题了。难得题目要么是模型复杂，要么是模型弄不清楚，感到它失效了，然后只好直接搞，其实这样的情况不多。电路分析里面有许多奇怪的方法，书上没有什么明确的定义或解释，要靠领悟的，这就~~~
本质来说，这样的事情是不存在的，但是有的分析太繁，只好凭感觉，恩。然后感觉这东西，就不算科学了吧。。。 模电是很神奇的东西，主要发展（继承）体系是这样的：
物理，数学 -> 半导体物理（晶体管、场效应管) -> 分立原件电路（即没有集成块） 到这里可以做一些简单的放大器 -> 集成电路 （运算放大器） 到这里什么加减乘除都能做了 -> 数字电路 数字化实现了不出错 -综合->> 形形色色的应用电子设备 模电就是搞中间的东西，半导体物理内容太多，无暇涉及。但是没有他，没有半导体，什么都没有咯。
[当我用这一个电脑，用着Internet，想想吧，其中的复杂，crazy!] “第一个发明了PN结的人，我认为这没什么价值”
量子力学，有希望成为下一场革命的领导者. 玩橡皮泥记今偶得橡皮泥一罐，爱不释手，牛鬼蛇神、飞禽走兽、阿狗阿猫皆借之投胎。 后小塑一具，乃一书生，以眼镜饰之，又作龇牙咧嘴之状，甚是滑稽。初名之曰《书呆子的呐喊》，觉之不妥。又名曰《我的呐喊》，聊表心头之感。 大爽矣，哈哈哈。 科创完了，精神未分裂！今终于把科创结束了，虽然几乎是在终审前一刻才debug成功，虽然还有想添加的功能，终审顺利通过，听着LM386放出的音量自动的SlamDunk 主题歌，蛮爽的！
当然也有不爽的地方，劳动成果，科研成果就这样被无情得收走了。估计是怕互相借用，造就一大批"汉芯"出来。
第二次和大学同学在学术方面有这样的合作，成功的合作，愉快的合作，很高兴！我们组里有n多猛男，个个身怀绝技，哈哈哈:D
说来话长，这东西真实一波八折，相当之搞。其实是很简单的电路，每做一个单元，first 焊好电路，then 问题就出现了，at first we will use serveral hours to find out the problem, (and as you find the problem, to fix it is quite easy. that reveals something really valuable! THE MOST IMPORTANT THING IS NOT HOW TO FIX A PROBLEM, BUT TO FIND WHERE IT IS.）
However, after doing one or two boards, i gradually learned how to find out the problem. Again, we got a guideline: Alway debug scienfically, that is ALWAYS IN A LOGICAL WAY! Is the power supply right? is the chip working properly? what about that chip? as you go on in this way, the bug will be focused to a certain board, to a certain chip, and to a certain connection or component. yeah~~
另外一个郁闷的事情是，越做这个你越发现，其实模电学得很差，一开始想用推挽式输出，然而电路接好完全不能放大，而是缩小的……这的确是个遗憾，留着去想想明白. this kind of emotion is called 郁闷。
最终的solution is, there is a chip called LM386, often used as a audio amplifier. but i'm not sure whether our lab have such a chip, when i went in to the management office, seeing there is LM386 written on the "available components list", you know, this is the emotion called happy, coz your demand can be met.
and problems and bugs are always rising. when we left lab, everything is ok, but the next day, the system just didn't work! this is the emotion called faint! faint, faint. These kind of things alway delay our schedual, i have to stay at school during the weekend, fix it.
yesterday, everything is done. but i have rearranged some components on the board to make it looks a bit more pleasent, that, finally, leads to a very unpleasent debugging work.
精度，又一个很重要的事情，其实没有什么科学含量，技术含量还是高的。昨天调放大倍数的精度，其实就是调整电阻，结果一个电组上面不断的并电阻上去。经过一次又一次的我们所谓的“伟大的尝试”，the error is decreasing. 200k,500k,1M,2M...终于error <1.0%, 发现五六个电阻并联着开了花。我和凯子的脸也笑成了一朵花~~~~
说说最后的效果吧，我们用22uF和510K的RC选频检波电路，把音频在5s左右内的平均幅值检验出来，通过电压比较，送回单片机；and the output part is done by the amplifier circuit using LM386. 当把电脑音乐输出变轻，增益就慢慢加了,and vice versa，所以听到的是比较 ear-protect 的。Really cool to have spaker output!
Specials thanks to you all
访抖动，增益延时 搞了蛮长时间：CS 猛男 凯丰
电路调试，走直角的电线、指示灯： 电气工程 猛男 二坤
数字感觉级佳：某地猛男啸晨
Slam Dunk 主题曲 词·曲·歌：大黑摩季 Explanation on the previous note.yuan lai shi zhe yang... space chou feng le, bu neng da zhong wen le. Intel in Macs Powered by the most advanced Intel chip, your new Mac will do all those things that only Macs can do — and do so at an astonishing level of performance. Intel Core Duo is the next generation in processor design from the world’s leading chip maker. The result of massive R&D effort involving thousands of engineers. An entire collection of revolutions shrunk into an unimaginably small space. Two processors are better than oneThe Intel Core Duo represents an order-of-magnitude leap in processor design. It’s actually two processors (cores) engineered onto a single chip — offering virtually twice the computational power of a traditional single processor in the same space. With two cores tightly integrated, increased L2 cache, and a host of engineering breakthroughs, the Intel Core Duo delivers higher performance for all the things you do — from enhancing the family photos to rendering special effects for a feature film.  It’s all about powerWhile the Intel Core Duo delivers far more horsepower than previous processors, it does so in a most extraordinary way: it consumes less energy. That’s due to the way the two cores work together to share resources(???interesting ), and how they are designed to conserve power when their functions aren’t required. Because the Intel Core Duo delivers high performance so efficiently, the new Macs can be both super-powerful and elegantly thin. A Herculean(ju da de) effortIt’s no coincidence that the Intel Core Duo was born of the world’s leading processor company. To design and fabricate a dual-core chip performing at this level demands a commitment of resources few companies can even contemplate. The Intel Core Duo represents years of development by legions of Intel engineers. It’s the first Intel processor built using the new 65-nanometer process, which makes possible transistors so small you could fit a hundred inside a single human cell. Combine the advances of Intel with the innovation of Apple, and you get the most amazing Macs ever built.
MacBook Pro with Intel Core DuoDual Core Performance
Times faster than 15-inch PowerBook G4 with 1.67GHz PowerPC based on estimated results of industry-standard SPECint and SPECfp rate tests. Testing conducted by Apple in January 2006 using preproduction 15-inch MacBook Pro units with 1.83GHz Intel Core Duo; all other systems were shipping units. SPEC is a registered trademark of the Standard Performance Evaluation Corporation (SPEC). 
iMac with Intel Core DuoDual Core Performance
Times faster than 20-inch iMac G5 with 2.1GHz PowerPC based on estimated results of industry-standard SPECint and SPECfp rate tests. Testing conducted by Apple in January 2006 using preproduction 20-inch iMac units with 2GHz Intel Core Duo; all other systems were shipping units. SPEC is a registered trademark of the Standard Performance Evaluation Corporation (SPEC). 开始了 More and more people are buying and loving Macs. To make this choice simply irresistible, Apple will include technology in the next major release of Mac OS X, Leopard, that lets you install and run the Windows XP operating system on your Mac. Called Boot Camp (for now), you can download a public beta today.
具体机构不很理解，但是apple的界面总是贴着不错的 好消息A.将现有的放大器和4066调整到适合音频信号。
初步结论： 1.Amplifier 的频率特性 // switch and OpAmp both have a frequency characteristic that's enough for the modual Audio signal.
2.4066对于负压是不通的，要把它耦合到一个静态电压上。输出时再提取出交流分量。 // it seems that the judgement made by the experiment guide is not true.
// and, another easier approach: connect the GND of CD4066 to a voltage that's a bit lower, say, -1 V, that will let the signal pass through while not effecting the Control Pins, as long as 1V < the trig level.
3.不宜改变基本部分的电路
只需实验测一测便知！
科创2扩展部分 设计框架现在开始，my space作为
科创二我们小组交流板块，也欢迎闲杂人等入内；）
自动增益部分的功能基本设计为：
输出信号平均电平（在一个采样时间内）恒定，若有偏离则自动调整到设定的范围内。
整个系统应适应于一般音频信号，Vp-p = 1000 mv
的交流信号，频带即为可闻及音频带：50Hz ~ 16KHz.
TO
DO TASKS:
A.将现有的放大器和4066调整到适合音频信号。
注意
1.Amplifier 的频率特性
2.4066对于负压是不通的，要把它耦合到一个静态电压上。输出时再提取出交流分量。
3.不宜改变基本部分的电路
B.输出级的取样和检测电路
1.找到一个合适的表征音量的频率，（拟取：800Hz)
2.球其在一段时间内(e.g. 1s)的平均电压， 此处应已为直流信号
3.比较电路，比较电压是否在指定的区间内。 比较电路的实现用两个开环运放就可。
输出为数字信号，indicating whether the voltage is
within the specified range.
C.单片机的自动增益调整。
通过输入信号调整增益。
可以先查些资料吧，主要是这个音频信号的有关问题比较难搞。
Carl Hsia
2006-04-21 各种各样 From 水木社区 和 饮水思源总之，这种紧密的联系使任何一方都难以承受两国关系严重受损的代价。对美国来说，“遏制中国”是不可能的使命。http://www.smth.org/bbscon.php?board=News&id=145908
男人白天奔波，夜里操劳为的啥?
还不是直接的或是间接的；有意的或是无意的；为他们梦想中的、 但是现实中还没有的；或这是他梦想的、而且已经在现实中找到的； 或是他梦想中的、而且也已经在现实中找到的，但是与他梦想不一样的； 或是不知道在哪里、存不存在、漂不漂亮的女孩子或女人， 吃得更好、走得更少、住得更宽敞吗？——《寝室夜话》 女口果人尔能看日月白这段言舌，那言兑日月人尔白勺目艮目青有严重白勺散光
I. 不要问BBS能为你做什么，而要问你为BBS做了什么
II. 大牛努力回答牛问题，菜青虫努力回答菜问题。大家都要努力回答别人的问题 III.BBS是靠良性循环存在的，只想获取不愿奉献的人不是网络人:) IV. 一个好的站点是靠大家的努力建成的，懒于回答别人的人也不会得到别人的回答 建安文学繁荣昌盛的原因
[思想的解放] [动乱的社会现实] [领袖人物的倡导] 一个时期文学的发展，与领袖人物或统治者的态度有很大关系。汉武帝好大喜功，尤好吹捧，所以便导致了汉大赋的兴盛。当然，汉大赋有其产生的各种因素，但与统治者的提倡是有很大关系的，就象宫体诗的产先与南朝萧氏统治集团有密切关系一样。 任何时代文学的发展，都存在有文学内部、外部的发展规律。文学内部的发展规律，是文学继承发展的主要原因，而外部的社会现实等则是文学赖以发展的客观条件。
中 国 每 年 用 掉 多 少 双 一 次 性 筷 子 ？
450亿双。这会耗费170万立方米的木材，需要砍伐大约2500万棵大树 carlxia
2006-04-19 China-US relations 摆事实讲道理
大胡有点郁闷
孤独 tango歌曲：孤独探戈
你可知道石头 要几多眼泪才被冲走 你早知探戈 一下推一下卸便极 你可知我背后 有几多冷汗朝着你流 如共你再错失半步 便是我的尽头 明白没有 在悬崖上哪可退后 你要转左我不后悔 望着自己的映像摇曳跌荡 仍然优雅地盲目搏斗 明白没有 任何难度我都接受 我会珍惜你最新好友 捏着自己的心脏狂烈跳动 但求跟你伴奏 残酷够 仁慈未够 离别舞别遗留 团聚够 裂痕未够 凭甚么换对手 抱上抱下 我是不倒的一个木偶 我一跌一碰 红地毯不懂痛楚 任由你践踏 强逼你回头 我有想过复仇 至少可制造 留下理由 其实我怕说声再会便是世间尽头 柔肠被磨碎之后 能覆盖宇宙 Predict is coming ture这两天比较忙，所以space也没怎么动，其实是不想动，我为什么要把msn space变成我生活的space,要看我space，最好的办法是看我的人。貌似比较无聊的话语。
背景音乐改称老罗语录了，很经典的。老罗是个人才，语速笃幽，不紧不慢，道理都被他说透了。还那么幽默，并自称有彪悍的性格。 题目是: predict is coming ture. what's the predict? and what's coming ture? Google solar isn't appearing, but google mars is appearing. goto: http://mars.google.com to enjoy the beautiful scenery there. My Earth, the earthGoogle Earth puts the entire earth in your hand. You just navigate and find whatever places on the earth. Really a miracle! Marvelous 找到了自己的家，找到了闵行交大，相距21,413m 于是我家的确切位置暴露无疑…… 延安中学，看得很清楚，又沿着回家的路找到了从前吃 麻辣烫的地方，哈哈哈 还找到了许多人的家，呵呵那人就在那儿呆着呢 （照片在相册里，这里就不插进去占用内存了） 眼光投向世界，看看著名大学都是什么样的， 想找the landmark of Cambridge, King’s College Chapel, 没找到，因为人家大学很分散 Oxford,仿佛置身于丛林，绿色一片 Harvard, 果然有钱，房子都看齐了
又想看看法国Provence的美妙景色，虽然没看到大片的花花草草，看到一个巨大的Golf Pool, 还标上了Hole 1, Hole 2… Hole 18. and Greenland 1….
又转到几条大运河, Panama and Suez, 感叹工程之宏伟 Bermuda又是个什么样的mysterious triangle？哦，湛蓝的海水透着一点阴森阿~~~~
地球算得大了吧，似乎顿时在我掌握，让看遍每一角落。还有什么神秘的呢？一台PC，地球在你掌握，我的天哪。让你不禁怀疑这一切的存在，又突然让你觉得坦然，地球不过这样。又突然觉得渺小，宇宙中无计星辰的一颗，然而不得不赞叹这一切的神奇。自己能有此一生命欣赏这一切无欲无求，可地球布满的城市，城市中密密麻麻，几乎令人发指的一幢幢，一片片房子，又让你感到恐惧！清醒了吧，石油马上用光，煤炭也终将耗尽，核能不过再撑一段时间，灭亡的趋势多么显然。我来到这个庞大的地球上干什么？我又将去向哪里？我们又可以去向哪里？城市希望我能为他做些什么，地球希望我也做一点什么，宇宙呢？人的确已经在地球上刻出了很多痕迹，造出了奇迹，可终究不明朗。未来谁也不知，却又有物理规律存在，可能星际移民，可能不久灭亡。都在眼前 人所要做的，大概就是让人自己好一些吧 倘若人能征服太阳系得时候，不知会不会有Google Solar出现…… 或是 Carl Solar 哈哈 不要太沉重了 不要让痛苦重演！一下午，几乎是整整一下午，就耗在一根破网线上了。 要开学啦，笔记本里很多东西不需要了，想把它传到家里的台式机上刻盘。从前一直连，速度么10MB/s不是问题。 网线一连，网上邻居都看见了。
从A 机看: 打开几个远程的文件夹一看，都看得见，挺好。可是呢，要download a file from the host is failed. I tried again. Requested a txt file, succeeded. And that bigger file, still failed. What’s the problem?
Then I moved to computer B to do some testing. From computer B: To my great surprise, everything is working so well! A 3MB file downloaded almost in no time.
A ping B, B ping A. so well. All responded 100% received. Why? It seems that the physical layer is normal, because the two computers do connected as proved by the ping result. So the problem could only be in some kind of settings. As settings of network in the windows are so complicated, I open the compmgmt.msc and gpedit.msc checking whether the settings of that two are the same. Result: almost the same, excepting some other settings that I know they have no effect on the network.
这时候，你只能说，没想法…… 咋办呢？由于此时仍然认为是设个设置的问题，或者是一些奇怪的软件搞了破坏。可是想想觉得奇怪，小文件能读，大的怎么就不行了呢 重装 两个字一闪而过，不行不行，这是不负责任的。什么问题还是不明白，况且耗时耗力，我还要装数以十计的软件。 于是重装被否。
于是只好跟着感觉走，或者说，随便找找感觉la
As the symptom is the difficulty to load big files, I sent a data of the maximum bytes allowed in ping using –L 65500. Then, it failed again!!! That struck me, cause ping is a very basic process in the fundamental layer of TCP/IP. Now it failed. The only explanation is a poor network environment, that’s the poor physical connection. So I moved my laptop to the living room immediately, and connected them with another wire.
Yeah! It works. J
然后我的本本就腾出了数以G计的空间。
原因：那个线一定是某个从BàA的导线接触不好，可能是电阻比较大了，然后小文件，数据包重发几次就ok,大文件就要命了，最终fail.
感想 1：理想和现实还是有距离的，并不是只有通断01两种状态，会出大问题，可有大作为。 2：分析要有逻辑，其实刚才有的分析事后想想还是走了点弯路的， 3：要对底层有认识，越深刻，对于分析问题越有益。否则为肤浅，其实还很肤浅 4：感觉也是很重要滴！可以说，感觉就是不太严密的逻辑吧。 5：要不停的猜想，演绎，检验。没有思路的时候就要找思路。 6： ！IMPORTANT！不是所有的问题都可以靠重装解决的。 7：PING 有时可以用长段数据尝试，默认的32 bytes有时不够大。 8：再奇怪、匪夷的问题，真相只有一个！ 恩，的确有点像侦探小说
对广大同仁的建议： 关注网线质量，不要让痛苦重演！ |
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