R*****D 发帖数: 153 | 1 You need use ATTO to bench. Crystal is not compitable with vertex2 |
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t*****s 发帖数: 1309 | 2 这个说法不太正确,ATTO和HD TUNE一样测试的是主控能力,和NAND速率无关,所以能
达到所谓的275/285
CDI才能测试真正的磁盘能力,这个持续读写并不奇怪,比较奇怪的是QD1 4K的速度,
即使在GC态也应该有20/30,10附近太低了
可以用HD TUNE测一下4K IOPS看有没有8000 |
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c*m 发帖数: 1114 | 3 这个讨论过几百遍了,OCZ SSD用的是压缩写入的技术,CDM benchmark不能很好的支持
这种机制的测试。ATTO的能较好体现出比较正确的benchmark. (话说用CDM的0 fill或
者1 fill也能得到类似结果). (老的Vertex 2还是很不错的。我的Vertex 2 120G 用来
快一年顺序读写还都保持在250+MB/S.)
或者你直接用win7 console下硬盘测试命令直接测试:
winsat disk -ran -read -drive c -count 1 -iocount 256 -ransize 4096
winsat disk -ran -write -drive c -count 1 -iocount 256 -ransize 4096
winsat disk -seq -read -drive c -count 1 -iocount 256 -seqsize 524288
winsat disk -seq -write -drive c -count 1 -iocount 256 -seqsize 524288
winsat disk -... 阅读全帖 |
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p*****e 发帖数: 560 | 5 重新测了ATTO和CDM 0Fill,这下结果差不多了。 |
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c*******8 发帖数: 287 | 6 我买了个T410s refurbished。所以拿到后特地看看有没有啥问题。
硬盘是samsung 128G ssd MMCRE28G8MXP-0VB
我先发现window的评分硬盘这一项只有5.9,看大家一般都接近7,我就下了些软件测试。
测试发现读取速度很稳定,应该也就是正常的。可是写入速度很奇怪。CDM 50MB的时候
,结果还看得过去,可是500MB的写入速度就惨不忍睹了。ATTO同时也看得出同样的问
题。
我不懂SSD,我想会不会是因为第一个买这个机器的人当时在SSD上写了大量的文件,导
致SSD性能下降(导致写小文件比大文件速度快)。我虽然recover了系统但是SSD还是
没有全部重置(都写成0)?
本来买个笔记本想提高工作效率的,可这耽误了好些时间了。
各位懂点的给点意见啊,如果大家认为正常,我也就不再管了。
或者大家认为有什么办法可以提高的,比如把SSD重新全部写0?具体怎么做呢?
或者就是硬件问题?那我就退了,即使要收15%restocking fee。
感谢感谢! |
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L*****y 发帖数: 4290 | 7 这块3星的ssd就是这个样子的吧, 好的还得是intel的
我买了个T410s refurbished。所以拿到后特地看看有没有啥问题。
硬盘是samsung 128G ssd MMCRE28G8MXP-0VB
我先发现window的评分硬盘这一项只有5.9,看大家一般都接近7,我就下了些软件测试。
测试发现读取速度很稳定,应该也就是正常的。可是写入速度很奇怪。CDM 50MB的时候
,结果还看得过去,可是500MB的写入速度就惨不忍睹了。ATTO同时也看得出同样的问
题。
我不懂SSD,我想会不会是因为第一个买这个机器的人当时在SSD上写了大量的文件,导
致SSD性能下降(导致写小文件比大文件速度快)。我虽然recover了系统但是SSD还是
没有全部重置(都写成0)?
本来买个笔记本想提高工作效率的,可这耽误了好些时间了。
各位懂点的给点意见啊,如果大家认为正常,我也就不再管了。
或者大家认为有什么办法可以提高的,比如把SSD重新全部写0?具体怎么做呢?
或者就是硬件问题?那我就退了,即使要收15%restocking fee。
感谢感谢! |
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a*****s 发帖数: 2663 | 9 俺明个就去注册pico,femto,atto, zepto,yocto。戈王八绿丘丘的! |
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j********2 发帖数: 4438 | 11
映射了个盘用atto测试了下,不能满速,freenas得zfs效能确实有问题,不过还堪用就
是了。服务器的配置是L5520+24G内存+ESXi,freenas的虚拟机分配了2个core和4G内存
。硬件应该没有瓶颈 |
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q**********r 发帖数: 465 | 12 用Java 读写LAN上面windows shared folder上的大文件,performance很差。
同样的程序,
如果读local文件,速度基本跟硬盘速度匹配。
在高速硬盘上接近200MB/s 也是可以实现的。
但是同样的硬盘,如果通过LAN windows shared folder文件来读取,
则速度降到20MB/s - 40MB/s左右。
不管硬盘有多快。
但是同样的网络映射盘,用ATTO 等 硬盘测速软件测速则没有问题。
传输速度基本可以接近gigabit 网络极限
(around 80MB-90MB/s)
只有java 程序不行。
试过bufferredInputStream, 但是FileChannel更快一些。
另外,Java7, Java8也比Java6几乎快一倍。(我指网络文件读取performance)
但是最快也就是40MB-50MB/s左右了。再也快不起来了。
读慢,但是写的速度居然正常!
正常的意思是说,java向网络硬盘写入文件的速度,可以达到跟其它测速软件相当的速
度。
即可以达到或接近gigabit LAN的极限。
这就奇怪了,为什么 读就几乎... 阅读全帖 |
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a**o 发帖数: 56 | 13 【 以下文字转载自 Internet 讨论区 】
【 原文由 atto 所发表 】
LP迷上一网络游戏, 整日玩得天浑地暗!
请问各位: 我怎么封了这个游戏网站?
用的是IE5.0. 拨号上网.
谢了! |
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K******S 发帖数: 10109 | 14 you can amplify DNA/RNA but not proteins. That's the key issue. If someone
can come up with a way to amplify proteins, s/he will be very rich.
High throughput: you can do thousands of MALDI-TOF in one day.
sensitivity: MRM constantly detect compounds with low atto-molar
concentration.
Quantitation: a handful of ways to do that. But you've gotta respect the
chemistry. For DNA/RNA, you only have a few different n.a. while for
proteins, you have 20 a.a.
Personally, I don't think high-throughput is ... 阅读全帖 |
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c****u 发帖数: 584 | 15 换Alexa or atto dye. Cy5 是臭名昭著的弱 |
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U**********b 发帖数: 13 | 16 【 以下文字转载自 Postdoc 讨论区 】
发信人: UofLlaserlab (UofLlaserlab), 信区: Postdoc
标 题: Post-doc Positions in Molecular Spectroscopy
发信站: BBS 未名空间站 (Mon May 23 14:08:21 2016, 美东)
Two Post-doc Positions in Molecular Spectroscopy at the University of
Louisville and the Ohio State University.
Two post-doctoral positions in experimental and theoretical molecular
spectroscopy are available in the research groups of Prof. Jinjun Liu at the
University of Louisville (UofL) and Prof. Terry A. Miller at the Ohio Stat... 阅读全帖 |
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t******r 发帖数: 71 | 17 哈哈……ironny不会后悔吧?
quant
of
atto
t |
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e*q 发帖数: 1 | 18 I'm a female attorney. I had my 1st child as a 2L.
We had a live-in nanny and my husband also helped a lot.
Law school simply wasn't that hard for me. I graduated
magna.
Law practice was 50 times more challenging. At least
that was the case for me. Almost none of the female partners
I know of had children. I had waited 9 more years
before I had my 2nd child. I was extremely lucky as
I didn't have any fertility problems.
Now I have 2 kids and a great career I enjoy a lot.
It's hard for women atto |
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x***u 发帖数: 6421 | 20 Improved measurement of the shape of the electron
J. J. Hudson, D. M. Kara, I. J. Smallman, B. E. Sauer, M. R.
Tarbutt & E. A. Hinds
AffiliationsContributionsCorresponding author
Nature 473, 493–496 (26 May 2011) doi:10.1038/nature10104
Received 18 February 2011 Accepted 08 April 2011 Published online 25 May
2011
The electron is predicted to be slightly aspheric1, with a distortion
characterized by the electric dipole
moment (EDM), de. No experiment has ever detected this dev... 阅读全帖 |
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j****c 发帖数: 19908 | 21 Nature最新文章:
http://www.nature.com/nature/journal/v473/n7348/full/nature1010
Improved measurement of the shape of the electron
Nature Volume: 473,Pages: 493–496 Date published: (26 May 2011) DOI
The electron is predicted to be slightly aspheric1, with a distortion
characterized by the electric dipole moment (EDM), de. No experiment has
ever detected this deviation. The standard model of particle physics
predicts that de is far too small to detect2, being some eleven orders of
magnitude sm... 阅读全帖 |
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s***e 发帖数: 911 | 22 Ypcto 10^(-24)
Zepto 10^(-21)
Atto 10^(-18)
Femto 10^(-15)
Pico 10^(-12)
Nano 10^(-9)
Micro 10^(-6)
Milli 10^(-3)
Centi 10^(-2)
Deci 10^(-1)
Deca 10^(+1)
Hecto 10^(+2)
Kilo 10^(+3)
Mega 10^(+6)
Gita 10^(+9)
Tera 10^(+12)
Peta 10^(+15)
Exa 10^(+18)
Zetta 10^(+21)
Yotta 10^(+24) |
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H****h 发帖数: 1037 | 23 【 以下文字转载自 Science 讨论区 】
【 原文由 space 所发表 】
Ypcto 10^(-24)
Zepto 10^(-21)
Atto 10^(-18)
Femto 10^(-15)
Pico 10^(-12)
Nano 10^(-9)
Micro 10^(-6)
Milli 10^(-3)
Centi 10^(-2)
Deci 10^(-1)
Deca 10^(+1)
Hecto 10^(+2)
Kilo 10^(+3)
Mega 10^(+6)
Giga 10^(+9)
Tera 10^(+12)
Peta 10^(+15)
Exa 10^(+18)
Zetta 10^(+21)
Yotta 10^(+24) |
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w*******y 发帖数: 60932 | 25 Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820227725
General
Brand
OCZ
Series
Agility 3
Model
AGT3-25SAT3-60G
Device Type
Internal Solid State Drive (SSD)
Used For
Consumer
Physical
Form Factor
2.5"
Capacity
60GB
Memory Components
MLC
Interface
SATA III
Controller
SandForce SF-2281
Width
3.93"
Depth
2.74"
Height
0.37"
Weight
0.17 lbs.
Performance
Sustained Sequential Read
up to 525 MB/s (SATA 6Gbps)
up to 280 MB/s (SATA 3Gbps)
Sustained Sequential Write
up to 475 MB/s (SATA 6Gbp... 阅读全帖 |
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w*******y 发帖数: 60932 | 26 Link:
http://www.newegg.com/Product/Product.aspx?Item=N82E16820220581
$79.99 + free shipping
$25 MIR from Patriot until 1/31
Total: $54.99 Shipped
I think this is a great deal for someone looking to jump from HDD to SSD
ship.
Description: The Patriot Torqx 2 SSDs are designed and built for cost-
effective performance. By leveraging a cutting-edge new SSD controller with
128MB DRAM cache and high-quality 3x-nm NAND flash, the Torqx 2 achieves up
to 270MB/s of sequential read speeds and up to 230M... 阅读全帖 |
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E*********e 发帖数: 10297 | 27 ah? haha
我家闺女研究小的length,那个我熟悉,我告诉她基本是
micro, nano, pico, femto, atto,zepto, yocto,
再往下妈妈不量了 |
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E*********e 发帖数: 10297 | 28 你们配溶液用得比较多,我最小的只接触过atto. |
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r*******y 发帖数: 1729 | 29 你是做什么的啊?和光学有关么?atto的数量级~~~ |
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