Weez.com » about http://www.weez.com Solving everyday practical LAMP problems... one at a time Fri, 10 Feb 2012 23:07:33 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 Learn about Percona XtraDB Cluster at Percona Live DC http://www.weez.com/2012/01/learn-about-percona-xtradb-cluster-at-percona-live-dc/ http://www.weez.com/2012/01/learn-about-percona-xtradb-cluster-at-percona-live-dc/#comments Mon, 09 Jan 2012 22:21:22 +0000 Abidoon http://www.weez.com/2012/01/learn-about-percona-xtradb-cluster-at-percona-live-dc/ You probably saw that Vadim blogged about the first alpha release of Percona XtraDB Cluster. Just in time: now I can talk about it at my High Availability talk in Percona Live DC! If you’re coming, be sure to catch us in the hallway and ask those specific questions that won’t be addressed in a general survey talk on HA solutions.

View full post on MySQL Performance Blog

]]> http://www.weez.com/2012/01/learn-about-percona-xtradb-cluster-at-percona-live-dc/feed/ 0 DROAM – Dreaming about Cheap Data Roaming http://www.weez.com/2011/01/droam-dreaming-about-cheap-data-roaming/ http://www.weez.com/2011/01/droam-dreaming-about-cheap-data-roaming/#comments Wed, 12 Jan 2011 19:27:06 +0000 Abidoon http://www.weez.com/2011/01/droam-dreaming-about-cheap-data-roaming/ I frequently travel outside of the US. Often to Europe and increasingly to the Middle & Far East and Australia. The one thing that I have always struggled with during my travels are the data plans of the cell phone companies. They are complex and ridiculously expensive. For an internet road warrior they are a complete nightmare.

One wireless company for example has an international plan that will charge you $25 per month for 50MB after which they will charge you $20 per MB. I frequently do more than 30MB a day, so this plan has no advantage for me. After many investigations I settled for T-Mobile which has an international Blackberry supplement that is $20/month for all BB mail traffic. Which is a good deal as I easily do 100MB++ in email alone. For a while this was great but as this doesn’t include web and application internet traffic I started to see a rise in my roaming costs which T-Mobile charges at $15/MB.

Out of sheer frustration I started to carry a bunch of pay-as-you-go sims for popular countries but recharging those is often a hassle. This international data mess has been a frequent conversation topic with fellow travelers and no one has a good, simple and reliable solution.

This summer however things changed. Some friends brought me into contact with Phillip Attore in Amsterdam who was running a Beta test for a new business: rent a mifi device for a few dollars a day with 50MB per day included. You can use the device world-wide and the cost is fixed on a daily basis.

I received one of these devices and tested it for the last three months of 2010 when I was almost continuously on the road. All around Europe, the Middle East, India, Singapore, US, and the service worked perfect (except for Amman in Jordan where there were some hickups). I used it constantly and the resulting cost for those three months was a fraction of what I would normally have to pay, while my T-Mobile roaming data bill remained at $0.00.

droam.jpg
Starting on January 1, 2011, the service, which is called DROAM, is open to use for everyone. Their starting rates is €27.50 for the device rental and the first day of data, and €3.50 for every day after this. This includes 50MB data traffic per day. Look at the details at the DROAM site, the product page or at their pricing sheet.

If you sign up with the coupon code 488 they will donate part of your bill to KIKA which is an organization that supports youth cancer research.

Disclaimer: I have no part in this company, except for being a very satisfied customer. They’re not even an AWS customer :-)

View full post on All Things Distributed

]]> http://www.weez.com/2011/01/droam-dreaming-about-cheap-data-roaming/feed/ 0 Thinking about running OPTIMIZE on your Innodb Table ? Stop! http://www.weez.com/2010/12/thinking-about-running-optimize-on-your-innodb-table-stop/ http://www.weez.com/2010/12/thinking-about-running-optimize-on-your-innodb-table-stop/#comments Thu, 09 Dec 2010 21:46:03 +0000 Abidoon http://www.weez.com/2010/12/thinking-about-running-optimize-on-your-innodb-table-stop/ Innodb/XtraDB tables do benefit from being reorganized often. You can get data physically laid out in primary key order as well as get better feel for primary key and index pages and so using less space,
it is just OPTIMIZE TABLE might not be best way to do it.

If you’re running Innodb Plugin on Percona Server with XtraDB you get benefit of a great new feature – ability to build indexes by sort instead of via insertion. This process can be a lot faster, especially for large indexes which would get inserts in very random order, such as indexes on UUID column or something similar. It also produces a lot better fill factor. The problem is…. OPTIMIZE TABLE for Innodb tables does not get advantage of it for whatever reason.

Lets take a look at little benchmark I done by running OPTIMIZE for a second time on a table which is some 10 times larger than amount of memory I allocated for buffer pool:

PLAIN TEXT
SQL:

  1. CREATE TABLE `a` (
  2.   `id` int(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  3.   `c` char(64) DEFAULT NULL,
  4.   PRIMARY KEY (`id`),
  5.   KEY `c` (`c`)
  6. ) ENGINE=InnoDB AUTO_INCREMENT=12582913 DEFAULT CHARSET=latin1
  7.  
  8. mysql> SELECT * FROM a ORDER BY id LIMIT 10;
  9. +—-+——————————————+
  10. | id | c                                        |
  11. +—-+——————————————+
  12. |  1 | 813cf02d7d65de2639014dd1fb574d4c481ecac7 |
  13. |  2 | 62960f5d5d50651e5a5983dacaedfa9a73a9ee87 |
  14. |  3 | cea33998792ffe28b16b9272b950102a9633439f |
  15. |  4 | 8346a7afa0a0791693338d96a07a944874340a1c |
  16. |  5 | b00faaa432f507a0d16d2940ca8ec36699f141c8 |
  17. |  6 | 8e00926cf6c9b13dc8e0664a744b7116c5c61036 |
  18. |  7 | f151fe34b66fd4d28521d5e7ccb68b0d5d81f21b |
  19. |  8 | 7fceb5afa200a27b81cab45f94903ce04d6f24db |
  20. |  9 | 0397562dc35b5242842d68de424aa9f0b409d60f |
  21. | 10 | af8efbaef7010a1a3bfdff6609e5c233c897e1d5 |
  22. +—-+——————————————+
  23. 10 rows IN SET (0.04 sec)
  24.  
  25. # This is just random SHA(1) hashes
  26.  
  27. mysql> OPTIMIZE TABLE a;
  28. +——–+———-+———-+——————————————————————-+
  29. | TABLE  | Op       | Msg_type | Msg_text                                                          |
  30. +——–+———-+———-+——————————————————————-+
  31. | test.a | OPTIMIZE | note     | TABLE does NOT support OPTIMIZE, doing recreate + analyze instead |
  32. | test.a | OPTIMIZE | STATUS   | OK                                                                |
  33. +——–+———-+———-+——————————————————————-+
  34. 2 rows IN SET (3 hours 3 min 35.15 sec)
  35.  
  36. mysql> ALTER TABLE a DROP KEY c;
  37. Query OK, 0 rows affected (0.46 sec)
  38. Records: 0  Duplicates: 0  Warnings: 0
  39.  
  40. mysql> OPTIMIZE TABLE a;
  41. +——–+———-+———-+——————————————————————-+
  42. | TABLE  | Op       | Msg_type | Msg_text                                                          |
  43. +——–+———-+———-+——————————————————————-+
  44. | test.a | OPTIMIZE | note     | TABLE does NOT support OPTIMIZE, doing recreate + analyze instead |
  45. | test.a | OPTIMIZE | STATUS   | OK                                                                |
  46. +——–+———-+———-+——————————————————————-+
  47. 2 rows IN SET (4 min 5.52 sec)
  48.  
  49. mysql> ALTER TABLE a ADD KEY(c);
  50. Query OK, 0 rows affected (5 min 51.83 sec)
  51. Records: 0  Duplicates: 0  Warnings: 0

That’s right ! Optimizing table straight away takes over 3 hours, while dropping indexes besides primary key, optimizing table and adding them back takes about 10 minutes, which is close than 20x speed difference and more compact index in the end.

So if you’re considering running OPTIMIZE on your tables consider using this trick, it is especially handy when you’re running it on the Slave where it is OK table is exposed without indexes for some time.
Note though nothing stops you from using LOCK TABLES on Innodb table to ensure there is not ton of queries starting reading table with no indexes and bringing box down.

You can also use this trick for ALTER TABLE which requires table rebuild. Dropping all indexes; doing ALTER and when adding them back can be a lot faster than straight ALTER TABLE.

P.S I do not know why this was not done when support for creating index by sorting was implemented. It looks very strange to me to have this feature implemented but majority of high level commands
or tools (like mysqldump) do not get advantage of it and will use old slow method of building indexes by insertion.

Entry posted by peter |
3 comments

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]]> http://www.weez.com/2010/12/thinking-about-running-optimize-on-your-innodb-table-stop/feed/ 3 Why Carriers are So Excited About Android http://www.weez.com/2010/09/why-carriers-are-so-excited-about-android/ http://www.weez.com/2010/09/why-carriers-are-so-excited-about-android/#comments Wed, 29 Sep 2010 10:44:25 +0000 Abidoon http://www.weez.com/2010/09/why-carriers-are-so-excited-about-android/ Why Carriers are So Excited About Android
The Monday Note: The Telcos Spot an Opportunity to Turn the Tables on Apple

Read more on CBS News

]]> http://www.weez.com/2010/09/why-carriers-are-so-excited-about-android/feed/ 0 Maverick meerkat Find Out About A Linux Ps3 http://www.weez.com/2010/08/maverick-meerkat-find-out-about-a-linux-ps3/ http://www.weez.com/2010/08/maverick-meerkat-find-out-about-a-linux-ps3/#comments Thu, 12 Aug 2010 13:49:57 +0000 Abidoon http://www.weez.com/2010/08/maverick-meerkat-find-out-about-a-linux-ps3/
ubuntumaverickmeerkat.com If you are someone who is aware of what is going on in the software development market then perhaps you know something about the apparent battle between open source and proprietary software. There are different ways of going about the development process and it is not as if one is necessarily better than the other, but you will find that there are different operating systems that can be used. So you could choose to get a Linux PS3.

]]> http://www.weez.com/2010/08/maverick-meerkat-find-out-about-a-linux-ps3/feed/ 0 Charlie LeDuff – spins a tale about Detroit Homicide http://www.weez.com/2010/08/charlie-leduff-spins-a-tale-about-detroit-homicide/ http://www.weez.com/2010/08/charlie-leduff-spins-a-tale-about-detroit-homicide/#comments Wed, 11 Aug 2010 16:58:43 +0000 Abidoon http://www.weez.com/2010/08/charlie-leduff-spins-a-tale-about-detroit-homicide/
Charlie LeDuff dons a trench coat and fedora at Detroit’s famed Checker Bar where LeDuff tells stories about Detroit Homicide Squad. Black and White feature.

]]> http://www.weez.com/2010/08/charlie-leduff-spins-a-tale-about-detroit-homicide/feed/ 1 How I Came About Ubuntu/Youtube-Honors http://www.weez.com/2010/08/how-i-came-about-ubuntuyoutube-honors/ http://www.weez.com/2010/08/how-i-came-about-ubuntuyoutube-honors/#comments Sat, 07 Aug 2010 05:05:24 +0000 Abidoon http://www.weez.com/2010/08/how-i-came-about-ubuntuyoutube-honors/
Hey Guys how are yall ? I’m good i made this video to keep yall updated with whats happening to me and how i came about ubuntu!! So what do yall think ? Leave me a comment rate this video and favorite and subscribe!! I got youtube honors 2 times already i am very happy to my great start and greatfull to all yall support!! i wouldnt be making video without you guys it really does mean allot!! Thanks Parker/ TheLinuxWizKid

]]> http://www.weez.com/2010/08/how-i-came-about-ubuntuyoutube-honors/feed/ 23 Mr_exon’s blog 8-5-10 talking about the rocket office Linux http://www.weez.com/2010/08/mr_exons-blog-8-5-10-talking-about-the-rocket-office-linux/ http://www.weez.com/2010/08/mr_exons-blog-8-5-10-talking-about-the-rocket-office-linux/#comments Fri, 06 Aug 2010 05:26:35 +0000 Abidoon http://www.weez.com/2010/08/mr_exons-blog-8-5-10-talking-about-the-rocket-office-linux/
talking about things to come

]]> http://www.weez.com/2010/08/mr_exons-blog-8-5-10-talking-about-the-rocket-office-linux/feed/ 0 Get to know about Linux+ Certification http://www.weez.com/2010/07/get-to-know-about-linux-certification/ http://www.weez.com/2010/07/get-to-know-about-linux-certification/#comments Sat, 31 Jul 2010 09:02:42 +0000 Abidoon http://www.weez.com/2010/07/get-to-know-about-linux-certification/ Linux+ certification is a vendor-neutral certification planned and administered by the Computing Technology Industry Association, affectionately known as CompTIA. It’s considered vendor-neutral because the exam isn’t based on one meticulous vendor’s hardware or software. This is somewhat unique in the information technology manufacturing. Many IT certification programs are centered on one particular vendor’s hardware or software, such as Microsoft’s Certified System Engineer (MCSE) certification, Novell’s Certified Novell Engineer (CNE) certification, or Red Hat’s Certified Engineer (RHCE) certification.

The Linux+ certification, on the other hand, is designed to bear out your knowledge and skills with the Linux operating system in general, not on any one particular distribution. According to CompTIA: Experts holding the CompTIA Linux+ certification can explain fundamental organization of Linux systems from the command line, demonstrate knowledge of user administration, know file permissions, software configurations, and organization of Linux-based clients, server systems, and security.

To confirm your knowledge, CompTIA requires you to take the Linux+ exam to be paid your certification. By passing this exam, you demonstrate that you have the skills and knowledge equivalent to a Linux system administrator who has 6–12 months of on-the-job experience.

The Linux+ exam is a timed exam that is delivered electronically on a computer. It’s composed of 98 queries that you will have 90 minutes to whole. The exam border is fairly simple. Each item is displayed one at a time on the screen. After you complete your exam, the computer will immediately evaluate it and your score will be printed out. To pass, you require a smallest amount score of 675 points out of a possible 900. If you are not capable to protect the minimum meet the criterion marks, your score printout will list the objectives where you missed queries. You can use this in order to review and prepare yourself to retake the exam.

CompTIA publish a set of objectives that define the Linux+ certification. These objectives specify what a Linux system admin with 6–12 months of experience should be acquainted with and be able to do. You can vision the Linux+ objectives at http://certification.comptia.org/linux/. All of the exam items on the Linux+ exam are based on these objectives.

If you are looking for Linux+ certification preparation like XK0-001 and XK0-002 study material developed by ExamsExpert.

]]> http://www.weez.com/2010/07/get-to-know-about-linux-certification/feed/ 0 Install Linux onto PS3 Installer – Forget About The CD’s http://www.weez.com/2010/07/install-linux-onto-ps3-installer-forget-about-the-cds/ http://www.weez.com/2010/07/install-linux-onto-ps3-installer-forget-about-the-cds/#comments Sun, 25 Jul 2010 14:21:22 +0000 Abidoon http://www.weez.com/2010/07/install-linux-onto-ps3-installer-forget-about-the-cds/ The Sony PS3 has actually got to be one of the tough machines to ever be built in this generation. The PS3 has given new point of view on how games look and are played. Aside from its graphical prowness, unbeknown to many you can even install Linux onto PS3 without the necessity to employ an installation disc.

If you haven’t any experience in installing Linux onto any machine the results can be disasterous, so it pays to ensure you have the right tools and instructions on how to install linux onto PS3.

When you consider installing Linux OS on your PS3 the primary thought is to get a disc that has the Linux and install it using the consoles drive. But this technique isn’t obligatory at all,you have no need a cd and you can install Linux onto PS3 easily without a disc.Now you can make your PS3 into a robust Computer and harness the true potential on of the playstation 3 console.

To do this all you want is a Linux installer for PS3

Linux installation software is a specially programmed software tool that can load and install Linux onto your PS3 without any hiccups. All you must do is google it to find it. This linux to PS3 software comes bundled with an emulator that makes it possible to download all the further software needed to run Linux on your PS3. The Linux emulator does everything the Linux CD would do so theres no problems there.

Consider the advantages of having Linux installed on your PS3:

Not only are you run Linux on your PS3, but with it you can install Window OS giving the opportunity to run windows capatible programs like MS Office and play all your favorite Computer therefore making it a totally fledged Computer desktop computer.

Below are some other benefit of having Linux on your PS3:

Make your PS3 run twin Operating Systems with Linux installer software.
Use Linux Emulator app to load Windows, MS Apps and lots more on PS3.
Play all your Fav computer games like Warcraft, EVE, Warhammer on PS3.
Run redhat, Yellow Dog Linux on PS3
Enable your PS3 to recognize any file format
Load 3rd party software

The features above make installing linux to PS3 a must for your playstation console. With the emulator installation of linux is formed that way easier, al you must do is simpll select options with click on a mouse and you will be away giggling. This method to install linux onto PS3 also defends your guaranty from being voided as it doesn’t require you meddling open your PS3 and soldiering a modchip. This could prove costly and something that no one wants to experience. All this without a CD, now that is amazing.

Just imagine having an all in one entertainment platform that can play your PS3 games as well as being able to act as a desktop Computer . This alone makes installing Linux to PS3 a must!

So if you want to discover more on the Linux to PS3 installer then visit -

Install Linux onto PS3.

.

Visit http://run-your-car-on-water.blogspot.com/2009/06/hho-gas-conversion-kit-run-your-car-on.html to get started today.

]]> http://www.weez.com/2010/07/install-linux-onto-ps3-installer-forget-about-the-cds/feed/ 0