Iperf

Iperf is a tool to measure the bandwidth and the quality of a network link. Jperf can be associated with Iperf to provide a graphical frontend written in Java.

The network link is delimited by two hosts running Iperf.

The quality of a link can be tested as follows:
– Latency (response time or RTT): can be measured with the Ping command.
– Jitter (latency variation): can be measured with an Iperf UDP test.
– Datagram loss: can be measured with an Iperf UDP test.

The bandwidth is measured through TCP tests.

To be clear, the difference between TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) is that TCP use processes to check that the packets are correctly sent to the receiver whereas with UDP the packets are sent without any checks but with the advantage of being quicker than TCP.
Iperf uses the different capacities of TCP and UDP to provide statistics about network links.

Finally, Iperf can be installed very easily on any UNIX/Linux or Microsoft Windows system. One host must be set as client, the other one as server

Resensi Film King’s Speech

Film yang di angkat dari kisah nyata ini memang tersaji dalam tampilan yang tidak membosankan. Cerita yang unik, gambar yang segar membawa para penonton dalam rasa lucu yang berubah menjadi haru. Awalnya ketika mendengar seorang pemimpin berbicara gagap memang terasa lucu, tapi setelah penterjemahan cerita membawa penonton menelusuri sebuah pilihan hidup yang menjadi sulit karena gagapnya seorang pemimpin maka keadaan menjadi haru dan sangat menyentuh hati.

Adegan awal film dibuka dengan penampilan Pangeran Albert (diperankan Colin Firth), yang merupakan putra kedua dari Raja George V, dalam menyampaikan pidato yang di temani oleh istrinya Elizaberth (Helena Bonham Carter) di Stadion Wembley, 1925. Yang ternyata meresahkan ribuan rakyat yang mendengarkan pidato itu.

Kegagalan pidato itu membuat sang Pangeran mencoba untuk mencari solusi agar dia bisa berbicara layaknya orang normal. Banyak dokter ditemuinya untuk menjalani terapi tapi hasilnya selalu nihil hingga rasa putus asa pun datang dalam dirinya.

Sang istri yang perihatin terhadap nasib yang ditimpa oleh suaminya itu pergi menemui Lionel Logue (Geoffrey Rush) yang ternyata ahli dalam terapi bicara. Pertemuan pertam pun memiliki kesan yang sangat unik, dimana Lionel ingin pertemuan itu dilakukan di rumahnya, dan ketika mereka bertemu Lionel meminta agar mereka saling sapa dengan nama Kristen mereka yang sebenarnya merupakan sebuah pelanggaran terhadap etika kerajaan.

Terapi pertama yang dilakukan oleh Lionel adalah meyakinkan Albert untuk membaca sebuah Hamlet. Jelas saja Albert yang merasa sebagai seorang yang terpandang tidak mau melakukannya hingga taruhan pun terjadi. Albert membaca dalam keadaan gagap dan berhenti dengan rasa putus asa.

Tapi Logue melanjutkan terapi itu dengan menyuruh Albert untuk mendengarkan sebuah musik dari sebuah piringan hitam dimana musik yang nyaring membuat Albert tidak bisa mendengar suaranya sendiri. Suara Albert direkam dalam piringan hitam dan ketika Logue ingin memutarnya Albert menolaknya. Piringan hitam di berikan kepada Albert dan Albert pulang lagi-lagi dengan rasa putus asa.

Singkat cerita Albert memutar piringan tadi setelah sang Ayah menjelaskan bahwa pentingnya sebuah pidato untuk penyiaran kepada masyarakat. Semua bagaikan sebuah keajaiban dimana dalam rekaman itu Albert sedikit pun tidak gagap ketika membaca. Dia lancar seperti orang normal. Karena kemajuan yang tidak terduga itu akhirnya Albert kembali menemui Logue dan mulai menjalankan terapi selanjutnya.

Kedekatan mereka yang sudah seperti teman dekat membuat Albert akhirnya bercerita banyak kisah kehidupan kecilnya di kerajaan yang kebanyakan tidak pernah di ketahui oleh publik, cerita yang di sampaikan oleh Albert ternyata menjadi latar belakang mengapa dia bisa berbicara tergagap-gagap.

Pada tanggal 20 januari1936 George V meninggal dunia. tahta Raja pun jatuh ke pada Edward kakak dari Albert. Akan tetapi Edward memiliki keinginan untuk menikah dengan Wallis Simpson, seorang janda Amerika yang pernah bercerai dua kali. hal itu memicu krisis konstitusional.

Karena Edward memilih untuk menikahi Wallis maka tahta kerajaannya pun di berikan kepada Albert. Bagi Albert hal itu bukanlah sesuatu yang menyenangkan, dimana dia hampir putus asa karena gagapnya yang membuat dia tidak bisa berpidato di depan umum. Hingga keluhan bahwa dia tidak pantas menadi seorang raja di karenakan gagap pun keluar dari mulunya sendiri. Saat adegan itu rasa miris hati sangat kental, emosi yang begitu kuat ditunjukkan dengan sangat bagus.

Ketika keterpurukan itu semakin menjadi, Logue pun membantunya untuk bisa berpidato, walau sebelumnya ada konflik yang terjadi di antara mereka bedua yang menyebabkan persahabatan mereka retak.

Cerita ini terasa sangat singkat, padahal jarang sekali film drama yang padat dengan dialog terasa cepat berlalu, padahal durasi film ini tergolong cukup lama. Penampilan Colin Firth sebagai Albert memang sangat cerdas, bicara gagapnya sangat terasa nyata dan berkesan tidak di buat-buat. Ekspresi emosi yang sering meledak-ledak juga sering bermunculan di dalam film ini. film yang menjadikan sebuah ekspresi sebagai dialog kuat yang membuat penonton tercengang-cengang. Jadi pantas lah jika film ini banyak masuk nominasi Oscar.

Lowongan dari perusahaan telekomunikasi asal UK di Jakarta

Ada lowongan dari perusahaan telekomunikasi asal UK di Jakarta. Lokasi kerja di Kuningan.
Lowongan yang tersedia:

1. Senior .NET Developer (SNETDEV)

– More than 2 years of relevant experiences in designing and developing
application using ASP.NET, C#
– Posses a relevant knowledge in HTML, JavaScript, and CSS.
– Having good technical knowledge in database design using Microsoft SQL
Server
– Able to work independently and as a team player

2. .NET Developer (NETDEV)

– 1-2 years of relevant experience in Client/Server and Web based
application using ASP.NET, C#
– Having experience in HTML, JavaScript, and CSS would be a great
advantages.
– Fresh graduates with development experience are welcome to apply.
– Able to work independently and as a team player

3. Web Designer (WEB)

– Experiences in css, xhtml, html, javascript, jquery (able to handcode)
– Fluent in using tools like adobe photoshop, corel draw, macromedia
flash, macromedia dreamweaver
– Having a good understanding of ASP.NET would be a great advantages
– Able to work independently and as a team player

4. Senior Tester (STESTER)*

Description :*

– Create Test Script / Scenario
– Coordinate and assign the software tester for application testing
– Assist the software tester in testing the application
– Ensure the application is being tested thoroughly
– Create the QA report periodically

*Requirement :*

– Bachelor degree.
– Strong knowledge with IT technology.
– Posses skill and experience in software development methodology and
software development tools.
– Min 2 year experience in software quality assurance.
– Project management skill.

Yang berminat silahkan kirimkan CV dalam Bahasa Inggris ke jobs [at]
isnandi.net letakkan kode-nya di subyek e-mail serta permintaan renumerasi
dan kapan waktu bisa bergabung.

BlackBerry PlayBook

Specifications

  • OS: QNX, BlackBerry Tablet OS with with symmetric multiprocessing
  • Processor: 1GHz dual core Texas Instruments OMAP4430
  • RAM: 1GB
  • Storage: 16GB, 32GB, or 64GB internal
  • Display: 7-inch WSVGA, 1024×600
  • Battery: Lithium-ion 5400 mAh
  • Ports: Micro USB, Micro HDMI, 3.5mm headset
  • Weight: 14.4 ounces (425 grams)
  • Dimensions: 7.6(h) x 5.1(w) x 0.4(d) inches
  • Camera: 5MP rear-facing, 3MP front-facing
  • Sensors: Accelerometer, GPS, digital compass, 6-axis gyroscope
  • Keyboard: Virtual QWERTY
  • Networks: LTE, WiMAX, and HSPA+ models later in 2011
  • Wireless: Wi-Fi 802.11a/b/g/n; Bluetooth 2.1+EDR
  • Tethering: Only to a BlackBerry smartphone
  • Price: $499 (16GB), $599 (32GB), $699 (64GB)

Who is it for?

The PlayBook is not for everyone. If you’ve been longing for an iPad, the arrival of the PlayBook is probably not going to change your mind and make you jump to the BlackBerry tablet instead, unless you are a devout BlackBerry smartphone user or you want a tablet primarily for surfing the Web. If you are a BlackBerry smartphone lover who has never even considered switching to iPhone or Android, then the PlayBook is probably the perfect tablet for you. It is is an excellent larger screen companion for your BlackBerry and expands its strengths to include top-notch Web browsing and multimedia capabilities. Speaking of Web browsing, the Web experience on the PlayBook is so good that I think we’re likely to see plenty of users who will buy one just as a Web tablet. The Javascript and Flash performance are excellent on the PlayBook — in terms of Flash, the implementation is significantly smoother and more stable than the Android implementation of Flash. The PlayBook is the first mobile device that provides something close to the full desktop Web experience.

What problems does it solve?

Based on BlackBerry’s overcomplicated smartphone UI that makes users constantly dig through tons of menus, I didn’t have much confidence that BlackBerry could deliver an excellent user experience on a tablet. But, the PlayBook pulled it off. The user experience is simple and self-evident, with no buttons and two basic gestures — swipe-up and swipe-down. It’s as easy to use as the one-button iPad solution, but without just blatantly ripping off Apple. The other big innovation in the PlayBook is the Web browser, as mentioned above. The page-load times are really quick, the fonts render beautifully, and RIM and Adobe worked together to pull off a Flash experience that virtually seamless. For example, you can take a lot of high quality Flash videos on Web page and throw into full screen mode and they look great and render flawlessly. You can even output these high quality videos to an HD TV via the PlayBook’s HDMI port and they still look great.

Standout features

  • UI and performance – The user experience is the biggest surprise of the PlayBook. It is easy to learn, smooth to navigate, and has some of the best and fastest responsiveness that you’ll find on any smartphone or tablet. It is a completely different experience than a BlackBerry smartphone.
  • Full-featured Web browsing – As we’ve already talked about, the Web browsing experience on the PlayBook is excellent. The Flash implementation is well-done. Even though I’m not a fan of Flash, it’s still a big part of the Web and  will be for years, until HTML5 replaces it. Oh, and the PlayBook already handles HTML5 quite nicely.
  • Usable word processor – One my biggest complaints with the iPad is that there isn’t a decent word processing app for taking notes, writing letters/memos, building basic documents, etc. Apple’s Pages app is a little too complicated than it needs to be and apps like iA Writer are nice but almost a little too bare bones. The PlayBook has the happy medium. Its Word To Go app  is the best word processing app I’ve used on a tablet. It is dead simple to use and has the most important basic features for building a good document. Plus, it’s free and installed by default. This is where RIM’s acquisition of Davaviz — the company behind Documents to Go — has really helped.
  • Brilliant for multimedia – The graphics performance and LCD display on the PlayBook are another big plus — and another pleasant surprise since the BlackBerry isn’t known as a multimedia powerhouse (although its high-end phones have been making strides in recent years). The PlayBook is terrific for watching videos and looking at photos. The images are crisp, the colors are vibrant, and the performance is snappy.

What’s wrong?

  • Email and calendar require a BlackBerry – The thing you most often hear the PlayBook getting dinged for is the fact that it didn’t ship with native email, calendar, and contacts apps (RIM says it will add them later this year). What the PlayBook does offer is the ability to use its Bridge feature to connect to a BlackBerry smartphone and then use its email, calendar, and contacts on the PlayBook’s larger screen. However, the actual data never resides on the PlayBook. It remains locked down in the BlackBerry phone, which is a plus for users that need tight security. The other thing to keep in mind is that if you use Web mail such as Gmail or Yahoo Mail, the Web experience on the PlayBook is good enough to handle light email and calendar tasks.
  • Needs more apps – The biggest problem with the BlackBerry PlayBook when you compare it to the iPad is the the lack of apps. On the iPad, apps extend the functionality of the device in lots of different ways, for business, for personal productivity, for entertainment, and much more. While RIM claims that the PlayBook ships with 3,000 tablet-optimized apps — “more than any of our competitors at launch,” according to co-CEO Mike Lazaridis — the problem is that the iPad has 75,000 apps now and a lot of important partners who are committed to the platform. RIM will never be able to compete with that, but if it can forge partnerships to get key apps like Amazon Kindle, Evernote, Dropbox, and Netflix on to the PlayBook, then it would have a much easier time winning over a larger niche market. However, companies appear reticent to jump on the PlayBook bandwagon. Amazon initially announced that it would release a Kindle app for the PlayBook launch, but is dragging its feet in fulfilling that promise.
  • 7-inch form factor has its limits – The thing that limits the great Web and multimedia experience on the PlayBook is the 7-inch screen. There are times when it’s just a little too small to clearly read Web pages and when some of the details can get lost in videos due to the smaller screen.

Bottom line for business

The BlackBerry PlayBook is the perfect choice for two types of tablet buyers — 1.) BlackBerry loyalists who want the perfect compliment to their smartphone and 2.) people who want a tablet primarily for mobile Web browsing from the conference room, couch, bedroom, and other places where you don’t have a full PC and don’t want to whip out a laptop.

For high security enterprises and government organizations that are already committed to the BlackBerry platform and have employees clamoring for iPads, the BlackBerry PlayBook is potentially an excellent tablet solution to run private apps and intranet services.

Manchester United are Premier League Champions 2010-2011

Manchester Untied only needed one point to secure their 19th Barclay’s Premier league title in today’s match against Blackburn. Match tied by 1-1 where Wayne Rooney for Manchester United scored from the penalty spot to and secured 19th league title at Blackburn. Both sides had chances to score early on before goalkeeper Tomasz Kuszczak’s flapping led to Brett Emerton’s volleyed opener for the hosts after 20 minutes. United were seriously up against it – Martin Olsson hit the woodwork with a header for Blackburn – and struggled to recover until the flashpoint with 20 minutes left. Now Manchester United will be concentrating on UEFA Champions League’s final against Barcelona on May 28, 2011. It would be a huge achievement for them if they also beat Barcelona in the finals. Congratulations to Manchester Untied team.

Install the Apache 2 Web Server on Ubuntu 10.10 (Maverick)

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