g*****g
发帖数: 34805 | 1 这只能说明你没有实际经验。能处理10M， 再多处理1M，从容量本身看是不难。
但是你忘了，前面这10M的连接是慢慢产生的，大多数时候这些连接只有heartbeat, 没
有信息交换。
但一旦有机器当机，这1M的重新连接请求是同时到来的，伴随的是需要重新产生用户
session, 要读DB, 要计算，
会产生巨大的冲击。这个冲击远远大于10M大多idle的连接。你的机器是顶不住的。
你说的要能够处理几倍的容量同样不对，一般的做法就是跑在50％－70%，超过了动态
继续起VM。
而不是预留几倍的处理能力。这本来就是云计算的长处。
persistent connection跟stateless connection在failover设计里是有很大区别的。
前者需要更大的余量。
用100台1M和10台10M的区别是巨大的。没有真正搞过实际系统的人不会想到这些问题，
但不等于这些问题就不存在了。
我说是伪命题，就是因为世界上100M 在线的系统屈指可数，而且据我所知没有一个是
用10台机器的，几百个上千个VM才是惯例。将来如果有1000M的系统，同样会倾向于多
起VM,
而不是多压榨单机性能。篮... 阅读全帖 |
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T********i
发帖数: 2416 | 2 呵呵。你着什么急？
OpenOnLoad我用了4年了。每天真金白银在交易。懒得reboot机器，经常连续运行半年
多。稳定不稳定我自然心里有数。
C10M，就那个定义，10M connection，10G throughput，100M connection/s，用
OpenOnLoad足够了。就这么简单。
不是说OpenOnLoad没bug。bug一堆一堆的。发现后workaround就好了。我前几天的帖子
还提到一个我发现的bug，迄今没fix。这并代表不能24X7稳定运行。 |
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S******1
发帖数: 216 | 3 有一个关于apache keep alive 的问题。
如果有一个web server是用apache host的，设置了keep alive为true, 那是不是默认
对于同一个client的multiple api call (even different types of api to the same
web service) 都是share同一个connection, 除了设置外，在程序上如何实现这点呢(
比如用java servlet) ??
还有就是keep alive 是share persistent connection的， 也就是对于同一个client
不会多次创建http连接，那么这里的client是怎么定义的，是一个什么样的scope ? 比
如一个apache website 用了keep alive, 哪一个用户的browser开了多个tab也是同样
share一个连接吗，怎么identify的，原理是什么呢？？？？？？？ |
|
b***i
发帖数: 3043 | 4 客户端还不是你可以自己控制吗？
比如，你自己2个线程发tcp，如果共享connection，那么信息回来的时候如何判断是给
谁的呢？如果你有办法判断，就可以共享。如果是浏览器，应该是一个tab对应一个
connection。因为普通的网页实在分不清是是哪个tab请求的。但是你自己写
webservice可以自己规定一些额外信息，自己写client来解决这个问题。
same
呢(
client |
|
b***i
发帖数: 3043 | 5 关键要有个先后，得一个发完了，另一个才能用同一个connection发送。否则必须新建
立一个connection。 |
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s**n
发帖数: 33 | 6 Thank you for letting me know the netstat. I used to use it but I think
tcpview is a better software giving me all connections in my XP box more
clearly. The problem is I found unknown connections to unknown address with
the process of svchost.exe. And I just found it became established. I am
wondering that something is wrong with my XP box.
CLOSE_WAIT |
|
q**p
发帖数: 12 | 7 I use Earthlink dial-up. It seems that I can connect to Internet (the computer
icon at the bottom of the screen blinks and will give me information about
connection speed, etc.), but when I try to use IE or Firefox to browse a site,
it always says the page is not found.
Does anybody know what it is and how to fix it?
Thanks. |
|
q**p
发帖数: 12 | 8 I don't understand what you mean. When you use dial-up, isn't there always a
little computer icon in the start bar showing some connection information? So
it seems that the computer is connected to the Internet, it's just that I can
view any page. Is it spyware problem? |
|
g****c
发帖数: 299 | 9 OK
1.find modem in device manage，double click go to setting/advance setting,
make sure choose connection speed is 56K not the maximum.
2.check whether choose data compression, smart traffic control, enscription?
You probably have broadband connection before, then add new modem hardware.
good luck
So
can
no |
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T**u
发帖数: 54 | 10 请问各位高手,
如何改变Local Area Connection的Connect using从"Broadcom 440x10x100
Integrated Controller"到"Broadcom 570xGigabit Integrated Controller"?
谢谢! |
|
l*****k
发帖数: 587 | 11 I wanna connect to an AIX through X window, using Exceed, how do I make
the connection secure?
Thanks |
|
c******n
发帖数: 4965 | 12 【 以下文字转载自 THU 讨论区 】
【 原文由 creation 所发表 】
I set up a smtp server of my own in office so I could
use it from anywhere ( my ISP's require the sender to be their own IP,
while school smtp refuses to send to sohu.com )
now I can connect it from school, it sends ok,
but if I connect to it from home, it just doesn't respond,
I tcpdumped, and the smtp server receives no request at all!!!
are the packets dropped by my ISP???? mine is SBC dsl
but it shouldn't be : I could use ISP's smtp from home .....
an |
|
l******n
发帖数: 301 | 13 Thanks!!!!
The following is the message,
"Connection Manager has encountered a problem and needs to close. We care
sorry for the inconvenience.
Error signature
szAppName:ConnMgr.exe szAppVer:1.6.1.1 szModName:ConnMgr.exe
szModVer:1.6.1.1 offset 00004d5c
This error report includes: information regarding the IP, the condition of
connection manager when the problem occurred, the operationg system version
and computer hardware in use, and the Internet Protocol(IP) address of your
computer.
We do no |
|
o*u
发帖数: 258 | 14 Bought a 32 syntax LCD TV during Thanksgiving. I connected it to a win2x PC.
But I couldn't adjust the volume for playing a rm file, which is always the
minimum. Is it because that I connect the audio with a speaker rather than the
TV audio output? I don't have a stereo minijack to RCA cable. Thanks for your
help. |
|
d****r
发帖数: 5 | 15 请问
I have a crossover cable I once used successfully connecting WINDOWS ME to 98.
But it failed this time in direct connection of windows me to window xp. I
set up ip address manually as
xp 169.254.0.1
me 169.254.0.2
Ping from window me 169.254.0.2 OK
169.254.0.1 failed
ping localhost OK
ping from xp 169.254.0.2 OK
169.254.0.1 failed
ping localhost OK
From xp --> network |
|
d******i
发帖数: 5 | 16 Hi,
I am running a windows small business server 2003 with bundled exchange
server.
I have some users who need to connect to the exchange server (using outlook)
but they are not on the Windows domain (either because they use XP home or
they are outside contractors).
Is it possible to connect to the exchange server without being on the domain?
How reliable and convenient is it? We mainly use the email and calendar
feature.
Please share your experiences.
Thanks. |
|
p*******m
发帖数: 136 | 17 I have both wireless and wired network card on my computer,
when I connect the computer to my office LAN,
I can browse the internet and do many things,
but the network and sharing center report that I am "not connected",
and my mapped network drive is not updated.
any idea? |
|
T*****y
发帖数: 225 | 18 请问wireless connection 老掉线是什么原因？
Driver: Intel 3945 ABG Network Connection
OS: WinXP
Router: D-Link 有加密。 (去年在COSTCO 买的)
用laoptop 无线上网，以前用着还好。最近频繁disconnect
刚装了最新的driver，前几个小时还好，后来又开始频繁disconnect.
laptop disconnect 之后用手机还可以上网(同一个router)。
event log 里面没看到特别error.
请大家指教。非常感谢。 |
|
N***1
发帖数: 698 | 19 我的电脑在家里(Windows XP 系统)。
我想使用remote desktop connection。
我在家里其他的电脑上，可以建立和使用remote desktop connection，
但是我到了学校或者其他地方，怎么都连不上。
请问这个是怎么回事啊？
谢谢了！ |
|
w*s
发帖数: 7227 | 20 【 以下文字转载自 Internet 讨论区 】
发信人: wds (中原一点红：心开运就通，运通福就来), 信区: Internet
标 题: win7 pc says "no wireless connections available"
发信站: BBS 未名空间站 (Mon Jan 13 08:52:24 2014, 美东)
i turned on pc this morning,
says no wireless connections available,
checked another pc, network is fine,
so i try to let windows detect and fix issue, no luck,
so i reinstall the wireless adaptor driver,
reboot,
still not work.
the only thing is, i was trying to download a e-book from a strange website
when i googled, i download... 阅读全帖 |
|
g****5
发帖数: 1 | 21 菜鸟级问题。有一Thinkpad T60。郁闷的是无线上网两三分钟就掉线。每两三分钟无线
通信自动关闭。只要再将无线通信打开就没事。说是ThinkVantage Access Connection
管理着无线上网。打开ThinkVantage Access Connection，看不懂。望各位赐教。 |
|
b*****l
发帖数: 9499 | 22 随便点开十几个 connections，一半以上是错的。nnd，太佩服 IPA 了。
想到举个例子，就随手又点开一个：BCL2 activates BID。这不是胡扯么？双击
connection 看文献，明明写着：
Ingenuity Relationships
activation [4]
In cytosolic fraction from HL 60 cells, human CASPASE7 [CASP7] protein
increases activation of human CIF [BID] protein that is decreased by human
BCL2 protein.
无语啊，眼泪哗哗的。。。 |
|
a*****g
发帖数: 19398 | 23 围棋和数学的关系——inherent connection (图)
2013年第63届IL数学老师年会是“围棋数学”debut的日子。
一些IL的数学老师参与了围棋数学的讲座。
他们学完了基本的围棋规则，下了几盘棋，
完成了 Go and Math Correlation Worksheet。
把最新的美国数学大纲 Common Core 和围棋逐条对比评分。
其中两位老师全部完成了K.CC(数数)、K和1的OA（运算和算术思考）领域
打分的结果基本上都是最高分4分，
印证着围棋和数学有着 “inherent connection”.
真是太高兴了！
明年进军全美数学老师年会！
让全美国数学老师都有机会知道数学围棋。 |
|
a*****g
发帖数: 19398 | 24 围棋和数学的关系——inherent connection (图)
2013年第63届IL数学老师年会是“围棋数学”debut的日子。
一些IL的数学老师参与了围棋数学的讲座。
他们学完了基本的围棋规则，下了几盘棋，
完成了 Go and Math Correlation Worksheet。
把最新的美国数学大纲 Common Core 和围棋逐条对比评分。
其中两位老师全部完成了K.CC(数数)、K和1的OA（运算和算术思考）领域
打分的结果基本上都是最高分4分，
印证着围棋和数学有着 “inherent connection”.
真是太高兴了！
明年进军全美数学老师年会！
让全美国数学老师都有机会知道数学围棋。 |
|
h****2
发帖数: 9 | 25 U is a simple connected open set and f is an analytic function, is f(U) simple
connected ? |
|
a*****g
发帖数: 19398 | 26 围棋和数学的关系——inherent connection (图)
2013年第63届IL数学老师年会是“围棋数学”debut的日子。
一些IL的数学老师参与了围棋数学的讲座。
他们学完了基本的围棋规则，下了几盘棋，
完成了 Go and Math Correlation Worksheet。
把最新的美国数学大纲 Common Core 和围棋逐条对比评分。
其中两位老师全部完成了K.CC(数数)、K和1的OA（运算和算术思考）领域
打分的结果基本上都是最高分4分，
印证着围棋和数学有着 “inherent connection”.
真是太高兴了！
明年进军全美数学老师年会！
让全美国数学老师都有机会知道数学围棋。 |
|
t*********s
发帖数: 113 | 27 这个绝对是误导.相同条件有connection绝对比没有connection容易拿到interview,这
个是公理.
对于老CMG来说,这个老意味着experiences (clinical and research),也意味着many
years after graduation.
因为后者,很多program都是直接被PC, human resource, and hospital
administration filter掉了.
如果我们的package能放到PD面前,interview时的表现也不差,前者开始shining, 谁
care你95还是99.
面试时，有个大陆来的Faculty对我说，进了这个圈子你就知道了，美国其实比中国还
中国。这里权钱交易少，因此权情交易无所不在。 |
|
I****n
发帖数: 134 | 28 谢谢你的回答~~！
但是我还有一点不太明白，听说connection是最重要的，但是不来美国积累人脉的话，
没有connection，就没有推荐信，这对于我们这种没有绿卡的人岂不是很不利？
谢谢！
scores |
|
发帖数: 1 | 29 诚心请教，请问如何建立connection？到想去的医院做volunteer行吗？STEP1分数不高
，只能指望后面的2和3以及建立connection了。好在今年家附近的一家医院开始收
resident,不知通过做volunteer先进入医院内部，然而再伺机行动的办法是否可行？-- |
|
b******e
发帖数: 1311 | 30 有connection强过没connection但是也不能指望。多条腿走路。自己该准备啥还是要准
备啥。两手准备正常的老板也能理解，又不是已经有offer了。老板介绍的这些有多少
在当地的？有的话，让老板签个线，喝喝咖啡，一起聊聊，别弄的面世的时候才第一次
见面。 |
|
m****r
发帖数: 141 | 31 Hi,
最近总收到 linked in 发来 You're now connected to somebody .
这是什么意思 ?
是 somebody 主动邀请 还是 linked in 自动 建立 connections.
有些人, 比如 猎头, 我不认识, 也从来没联系过.
thanks |
|
l******9
发帖数: 579 | 32 【 以下文字转载自 Database 讨论区 】
发信人: light009 (light009), 信区: Database
标 题: access two databases in one ODBC connection from pyodbc
发信站: BBS 未名空间站 (Sun Aug 3 09:28:06 2014, 美东)
how to access two databases in one ODBC connection from pyodbc ?
thanks ! |
|
a**********0
发帖数: 422 | 33 my sas sid will expire soon and I plan to switch to work on servers and i
plan to use sas connect. Is sas connect a stand-alone software or is it part
of SAS which I have to install everything.
I just want to find a client terminal of SAS
any suggestions |
|
i*********5
发帖数: 19210 | 34 【 以下文字转载自 Swimming 讨论区 】
发信人: ironman2015 (IMMT 2013), 信区: Swimming
标 题: 介绍一下Garmin Swim在新版Garmin Connect里的显示
发信站: BBS 未名空间站 (Wed Dec 17 10:05:00 2014, 美东)
有了Garmin Swim或者920XT后，你就可以记录下来你的详细workout，帮助训练后分析。
见下图，每个interval，每个length的pace，strokes，SWOLF都有详细记录。在Garmin
Connect里，你filter出来你所有lap swimming训练记录就又能看出你长期的进步趋势。
单个worksout的总结：
Intervals的数据：
Intervals的图示： |
|
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n******y
发帖数: 72 | 36 Do you guys have problems to connect mainland websites? I can barely
connect BaiDu. Way too slow. |
|
s****s
发帖数: 2163 | 37 还好吧。我好几个朋友最后都去了KIDS CONNECTION. 他们都是选了一圈，去的KIDS
CONNECTION.
我常听说不好的是Foster City Preschool。 |
|
|
w*******y
发帖数: 60932 | 39 Link:
http://www.meritline.com/sata-ata-raid-data-hdd-hard-drive-cable-178---p-34910.aspx
Coupon code:MLCK1921780803HPL1
Deal Starts Today at 11:00AM PDT
Overview:
These new Serial ATA/SATA cables embrace the new standard of Serial ATA
connection, which boasts data transfer speeds of up to 150 Mbps. The Serial
ATA/SATA cable connects the system board with any Serial ATA and Serial ATA
devices, including hard drives, CD ROM, CDRW and DVD.
Specifications:
Length: 18 inches / 45cm
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w*******y
发帖数: 60932 | 44 Home Depot [homedepot.com]
LockState Connect WiFi Internet 7-Day Programmable Thermostat is on sale
from $198 to $118 with free shipping. Even better, enter code SAVETEN, which
cuts it to $108.
Since this thermostat connects to the internet you can program it from
anywhere via an app. It also features touch screen controls and can set up
to 2 stages of heat and 2 stages of cool.
|
|
w*******y
发帖数: 60932 | 45 PANASONIC TC-P65ST30
64.7" 1080P 3D PLASMA HDTV,VIERA CONNECT,WI FI READY,INFINITE BLACK 2 PANEL
1499- confirmed by adding to cart.
Link:
http://newspaperads.mercurynews.com/FSI/Page.aspx?advid=200177&
Calling amazon now for PM.
Description,
Detailed Description
(Manufacturer # TC-P65ST30 )
Full HD 3D
Infinite Black 2 Panel
Viera Connect Wi-Fi Ready
Viera Image Viewer with 3D Playback
Fast Switching Phosphors
600 Hz Sub-field Drive
1080p Full HD Resolution
Game Mode
Motion Smoother
Skype Vid... 阅读全帖 |
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l******9
发帖数: 579 | 46 【 以下文字转载自 Database 讨论区 】
发信人: light009 (light009), 信区: Database
标 题: access two databases in one ODBC connection from pyodbc
发信站: BBS 未名空间站 (Sun Aug 3 09:28:06 2014, 美东)
how to access two databases in one ODBC connection from pyodbc ?
thanks ! |
|
l******9
发帖数: 579 | 47 【 以下文字转载自 Database 讨论区 】
发信人: light009 (light009), 信区: Database
标 题: access two databases in one ODBC connection from pyodbc
发信站: BBS 未名空间站 (Sun Aug 3 09:28:06 2014, 美东)
how to access two databases in one ODBC connection from pyodbc ?
thanks ! |
|
m********2
发帖数: 164 | 48 Sorry can't type in chinese right now.
There are three types of connections:
text to text
text to self
text to world
You can pick one and make connections. |
|
s********n
发帖数: 26222 | 49 【 以下文字转载自 Military 讨论区 】
发信人: smokinggun (硝烟), 信区: Military
标 题: Facebook CIA connection - YouTube
发信站: BBS 未名空间站 (Wed Oct 26 11:15:16 2011, 美东)
www.youtube.com/watch?v=DIGdWsxHJlM
2011年3月22日 - 5 分钟 - 上传者：Anarchitext
Do you have a facebook? First ask about the funding Follow the money trail..
. This video reveals the true aim of the Facebook ... |
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c**i
发帖数: 6973 | 50 James Dao, Staying in Touch With Home, for Better or Worse. New York Times,
Feb 17, 2011.
http://www.nytimes.com/2011/02/17/us
/17soldiers.html?scp=1&sq=military%20better&st=cse
("The Pentagon, which for years resisted allowing unfettered Internet access
on military computers because of cyber-security concerns, has now embraced
the revolution, saying instant communication is a huge morale boost for
troops and their families")
Note:
(a) scramble (vi):
"1a : to move with urgency or panic
b : to mo... 阅读全帖 |
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