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We can some mathematical know, how many additional battery life can you, for example, you can the platter to reduce the speed of the hard disk. Currently on the market of a typical notebook has about a 50-100 Watts of power, this is a very good 2-4 hours capacity lithium ion battery. Suppose we have a 50-watt battery laptop. If the battery for 3.5 hours continuous operation then we can hard drive, as 50/3.5 = 14.3 watt average power consumption charge. Said laptop notebooks with a typical hard drive, it uses about 0.9 Watts in standby mode about 0.3 Watts in standby mode. In theory, we can reduce the power consumption 0,6 Watt and reached approximately 13.7. This increases the battery life 50/13.7 = 3 hours and 39 minutes. Profits you always depends how much electricity you save total electricity consumption. In our example below rotate about save overall performance, 4% so that the battery life for maximum gain of 4% as well.Laptops give to do you the freedom you want to do wherever you want. But all these are, how long you can laptop battery decided last. Lucky is that it many ways energy to save longer battery life. For example, can reduce the speed of the processor and the brightness of the backlight and disk spin-down. The first two Linux knowledge, but until recently, can be a considerable decline in the fight by turning the hard disk. Even if you get when driven rotation, it is never long enough to save any of the powers. This article describes how use the notebook mode, a function, which recently to the Linux kernel, the actual spin. Linux2.2.1. I said only a laptop computer model 6 in 2.4, but it is a bit different.Laptop mode is a Linux kernel and the kernel in the course of time is how the distribution of disk I / O settings to change. Linux disk I / O for a small amount of normal, well distributed in a timeout. But all I / O's, your hard disk has to an opportunity never slow given waste of valuable energy. For a notebook, the acti vity of the hard disk in a very short time to concentrate, and the latency between them, like me, like the baseline should. If you allow laptops, Linux makes. You can set up is to get extended ten minutes it no activity of the hard drive it is certainly to improve the battery life of laptops.You use it on the laptop mode you can as many as a dozen minutes is it set no activity of the hard disk. If you do not change to any file, you can rotate the disc, or even a long time. After all, if there is nothing to write, there no reason the disk turns. It is unfortunate if you use the default option installs the file is, change time, access to the file system. Access time updates, even if you read only the files that must be written it on the hard disk after all. To avoid this problem, back, all file systems use laptop mode the unique mount option. This makes them the recording to stop time, so you can actually not ten minutes more than disk-I / O?I would so many theories, like to t ell you some real data. I borrowed a friends Dell Inspiron mini 10, installation Debi and GNU / Linux and Linux 2.6.6 kernel, and then a little experiment. I think battery life estimates the maximum gain and time, between spinals close to the maximum extent need. I expect a considerable gain, and maintenance of the system because laptops with 5400 U / min hard drive power consumption are equipped, because I denied all x servers. I wrote a benchmark, always the same amount of I / O plate per hour, but invalid and configuration I / O between periods. The inactive time, hard drive spin down the benchmark program. I ran a cycle length document number, and I use the APM battery to charge information about the expected Dell Inspiron mini 10 battery life.

#1: Full access vs. no accessHaving access to the source code is probably the single most significant difference between Linux and Windows. The fact that Linux belongs to the GNU Public License ensures that users (of all sorts) can access (and alter) the code to the very kernel that serves as the foundation of the Linux operating system. You want to peer at the Windows code? Good luck. Unless you are a member of a very select (and elite, to many) group, you will never lay eyes on code making up the Windows operating system.You can look at this from both sides of the fence. Some say giving the public access to the code opens the operating system (and the software that runs on top of it) to malicious developers who will take advantage of any weakness they find. Others say that having full access to the code helps bring about faster improvements and bug fixes to keep those malicious developers from being able to bring the system down. I have, on occasion, dipped into the code of one Linux application or another, and when all was said and done, was happy with the results. Could I have done that with a closed-source Windows application? No.#2: Licensing freedom vs. licensing restrictionsAlong with access comes the difference between the licenses. I'm sure that every IT professional could go on and on about licensing of PC software. But let's just look at the key aspect of the licenses (without getting into legalese). With a Linux GPL-licensed operating system, you are free to modify that software and use and even republish or sell it (so long as you make the code available). Also, with the GPL, you can download a single copy of a Linux distribution (or application) and install it on as many machines as you like. With the Microsoft license, you can do none of the above. You are bound to the number of licenses you purchase, so if you purchase 10 licenses, you can legally install that operating system (or application) on only 10 machines.#3: Online p eer support vs. paid help-desk supportThis is one issue where most companies turn their backs on Linux. But it's really not necessary. With Linux, you have the support of a huge community via forums, online search, and plenty of dedicated Web sites. And of course, if you feel the need, you can purchase support contracts from some of the bigger Linux companies (Red Hat and Novell for instance).However, when you use the peer support inherent in Linux, you do fall prey to time. You could have an issue with something, send out e-mail to a mailing list or post on a forum, and within 10 minutes be flooded with suggestions. Or these suggestions could take hours of days to come in. It seems all up to chance sometimes. Still, generally speaking, most problems with Linux have been encountered and documented. So chances are good you'll find your solution fairly quickly.On the other side of the coin is support for Windows. Yes, you can go the same route with Microsoft and depend upon yo ur peers for solutions. There are just as many help sites/lists/forums for Windows as there are for Linux. And you can purchase support from Microsoft itself. Most corporate higher-ups easily fall victim to the safety net that having a support contract brings. But most higher-ups haven't had to depend up on said support contract. Of the various people I know who have used either a Linux paid support contract or a Microsoft paid support contract, I can't say one was more pleased than the other. This of course begs the question "Why do so many say that Microsoft support is superior to Linux paid support?"#4: Full vs. partial hardware supportOne issue that is slowly becoming nonexistent is hardware support. Years ago, if you wanted to install Linux on a machine you had to make sure you hand-picked each piece of hardware or your installation would not work 100 percent. I can remember, back in 1997-ish, trying to figure out why I couldn't get Caldera Linux or Red Hat Linux to see my modem. After much looking around, I found I was the proud owner of a Winmodem. So I had to go out and purchase a US Robotics external modem because that was the one modem I knew would work. This is not so much the case now. You can grab a PC (or laptop) and most likely get one or more Linux distributions to install and work nearly 100 percent. But there are still some exceptions. For instance, hibernate/suspend remains a problem with many laptops, although it has come a long way.With Windows, you know that most every piece of hardware will work with the operating system. Of course, there are times (and I have experienced this over and over) when you will wind up spending much of the day searching for the correct drivers for that piece of hardware you no longer have the install disk for. But you can go out and buy that 10-cent Ethernet card and know it'll work on your machine (so long as you have, or can find, the drivers). You also can rest assured that when you purchase that insanely powerful graphics card, you will probably be able to take full advantage of its power.#5: Command line vs. no command lineNo matter how far the Linux operating system has come and how amazing the desktop environment becomes, the command line will always be an invaluable tool for administration purposes. Nothing will ever replace my favorite text-based editor, ssh, and any given command-line tool. I can't imagine administering a Linux machine without the command line. But for the end user not so much. You could use a Linux machine for years and never touch the command line. Same with Windows. You can still use the command line with Windows, but not nearly to the extent as with Linux. And Microsoft tends to obfuscate the command prompt from users. Without going to Run and entering cmd (or command, or whichever it is these days), the user won't even know the command-line tool exists. And if a user does get the Windows command line up and running, how useful is i t really?#6: Centralized vs. noncentralized application installationThe heading for this point might have thrown you for a loop. But let's think about this for a second. With Linux you have (with nearly every distribution) a centralized location where you can search for, add, or remove software. I'm talking about package management systems, such as Synaptic. With Synaptic, you can open up one tool, search for an application (or group of applications), and install that application without having to do any Web searching (or purchasing).Windows has nothing like this. With Windows, you must know where to find the software you want to install, download the software (or put the CD into your machine), and run setup.exe or install.exe with a simple double-click. For many years, it was thought that installing applications on Windows was far easier than on Linux. And for many years, that thought was right on target. Not so much now. Installation under Linux is simple, painless, and ce ntralized.#7: Flexibility vs. rigidityI always compare Linux (especially the desktop) and Windows to a room where the floor and ceiling are either movable or not. With Linux, you have a room where the floor and ceiling can be raised or lowered, at will, as high or low as you want to make them. With Windows, that floor and ceiling are immovable. You can't go further than Microsoft has deemed it necessary to go.Take, for instance, the desktop. Unless you are willing to pay for and install a third-party application that can alter the desktop appearance, with Windows you are stuck with what Microsoft has declared is the ideal desktop for you. With Linux, you can pretty much make your desktop look and feel exactly how you want/need. You can have as much or as little on your desktop as you want. From simple flat Fluxbox to a full-blown 3D Compiz experience, the Linux desktop is as flexible an environment as there is on a computer.#8: Fanboys vs. corporate typesI wanted to add this because even though Linux has reached well beyond its school-project roots, Linux users tend to be soapbox-dwelling fanatics who are quick to spout off about why you should be choosing Linux over Windows. I am guilty of this on a daily basis (I try hard to recruit new fanboys/girls), and it's a badge I wear proudly. Of course, this is seen as less than professional by some. After all, why would something worthy of a corporate environment have or need cheerleaders? Shouldn't the software sell itself? Because of the open source nature of Linux, it has to make do without the help of the marketing budgets and deep pockets of Microsoft. With that comes the need for fans to help spread the word. And word of mouth is the best friend of Linux.Some see the fanaticism as the same college-level hoorah that keeps Linux in the basements for LUG meetings and science projects. But I beg to differ. Another company, thanks to the phenomenon of a simple music player and phone, has fallen int o the same fanboy fanaticism, and yet that company's image has not been besmirched because of that fanaticism. Windows does not have these same fans. Instead, Windows has a league of paper-certified administrators who believe the hype when they hear the misrepresented market share numbers reassuring them they will be employable until the end of time.#9: Automated vs. nonautomated removable mediaI remember the days of old when you had to mount your floppy to use it and unmount it to remove it. Well, those times are drawing to a close but not completely. One issue that plagues new Linux users is how removable media is used. The idea of having to manually "mount" a CD drive to access the contents of a CD is completely foreign to new users. There is a reason this is the way it is. Because Linux has always been a multiuser platform, it was thought that forcing a user to mount a media to use it would keep the user's files from being overwritten by another user. Think about it: On a multiuser system, if everyone had instant access to a disk that had been inserted, what would stop them from deleting or overwriting a file you had just added to the media? Things have now evolved to the point where Linux subsystems are set up so that you can use a removable device in the same way you use them in Windows. But it's not the norm. And besides, who doesn't want to manually edit the /etc/fstab fle?#10: Multilayered run levels vs. a single-layered run levelI couldn't figure out how best to title this point, so I went with a description. What I'm talking about is Linux' inherent ability to stop at different run levels. With this, you can work from either the command line (run level 3) or the GUI (run level 5). This can really save your socks when X Windows is fubared and you need to figure out the problem. You can do this by booting into run level 3, logging in as root, and finding/fixing the problem.With Windows, you're lucky to get to a command line via safe m ode and then you may or may not have the tools you need to fix the problem. In Linux, even in run level 3, you can still get and install a tool to help you out (hello apt-get install APPLICATION via the command line). Having different run levels is helpful in another way. Say the machine in question is a Web or mail server. You want to give it all the memory you have, so you don't want the machine to boot into run level 5. However, there are times when you do want the GUI for administrative purposes (even though you can fully administer a Linux server from the command line). Because you can run the startx command from the command line at run level 3, you can still start up X Windows and have your GUI as well. With Windows, you are stuck at the Graphical run level unless you hit a serious problem.

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RHCA certification should only be pursued by the ones hoping to forge work as a professional Linux guide and/or troubleshooter. Together, the examinations that make up the certification represent around 30 hours of test time - to express nothing of the getting ready time required. As these kinds of, RHCA certification is only for the most dedicated and studious of individuals. .Linux os. This is not for those technologically faint hearted, Linux may be a 'community engineered' alternative to Windows operating system. Benefits to recruitment agencies areThe machines may be cheaper and faster than only a Windows PCThey carry equivalent packages (e. g. statement processor, spreadsheet, presentation for example. ) for all on the market Windows office software utilizing one key difference, the Linux software is all open source as well as being therefore free! Linux machines don't suffer virus attacks. With Windows I helpful to loose 2 to 3 days per year (plus sleep) over virus attacks after which having to recover statistics. With Linux in 2 a long time I've had none! The the very first thing to be careful of here is that Linux is diverse kit to windows, so you should have a specialist Linux company to back up you. But, if you could get this, my opinion might be, and I stress it's my opinion, Linux is fantastic meant for recruitment consultants, cheaper to invest in, cheaper to run, faster and others reliable! Open source application. Office software, and in particular CRM solutions can cost recruitment agencies large volumes of money to create and run. Open supplier software is free, created and updated utilizing a large community of techies it's presents highly sophisticated alternatives towards traditional software. There are excellent open source CRM services, totally free as they may be open source and absolutely usable as recruitment agency database software. As utilizing Linux, it's advisable to see a company who will you through it, but be sides support, the software is unengaged to obtain and use during an ongoing basis, and it's net based, making it easy for recruitment consultants to evaluate from any location. Look at Sugar CRM. Messenger. This is not that new, but essential technology for virtually every recruitment agency, messenger facilitates staff to communicate coming from anywhere, real-time, so long as they quite simply have an internet interconnection. There are a range of benefits: Saves on phone and text charges, messenger talking is free. Highly effective for team using the services of channels to all open every single time. Excellent to support home getting work done in maintaining your contact through staff. Works on any SYSTEM or mobile device by having an internet connection. Smart mobile phones. Today's mobile phones give exceptional functionality with broadband speed internet connections enabling full mobile e-mail limit and internet browsing though out interviewing. If your corporation p laces it's database on the server which is mounted on the internet, you'll have full the means to access your recruitment database when out with clients or maybe interviewing. The days of recruitment consultants being required to synchronise with outlook when you're back at work are gone. Run a web structured e-mail package (try Zimbra) for all your e-mail, calender and notes and discover never need to synch once again, simply use in onto your phone over the internetIP smartphone.

Oracle's Takeover with Sun MicrosystemsWhen Sun Microsystems had been bought by Oracle, many IT managers started to worry. Any time an agency changes hands there is concern with regards to the future of the products. However in this case there would be an additional problem. Although Sun is well known for many software treatments, it is also an important provider of products much like the heavily-used Solaris server operating system. Oracle, on the various hand, has no experience through developing or supporting this kind of technology. What would affect Sun's server products? Could Oracle abandon them, suddenly leaving examples of the world's largest companies running their networks on out of date technology? Or would Oracle continue to keep offer Sun's servers, though offer escalating maintenance rates for substandard support? Oracle has remained silent while in the months since the exchange. Many IT managers currently have stopped waiting on Oracle with turned to other technology. Solaris to Linux migration levels are soaring. Others hold on, reluctant to abandon trustworthy technology, but is that as good as migrating from Sun nodes? The Problems With Staying with SolarisManagers have fears in relation to migrating from Sun computers, such as downtime, info loss, and lowered production as employees get used to the new system; they may be biding their time till Oracle gives some clear indication of their future direction. Unfortunately, the decision to do nothing may return to haunt them later. What when Oracle announces it ideas to discontinue support just for Solaris? Suddenly Solaris to Linux migration really needs to be done in a urgency, and migration is never something that can be done without careful preparation. However it's either of which or maintain a circle on unsupported technology - that could be a disaster in the creating. Or perhaps Solaris it's still supported, but future development might be halted. As other technological innovation advance, Sun technologies fall further and further behind, and so will businesses which use it. Again, migrating as a result of Sun servers would grow to be an inevitable result, exactly why not start the process now rather then waiting until the final choice is forced? Benefits Of Solaris for you to Linux MigrationMost IT departments which are usually migrating from Sun servers apparently have opted for Linux around other server technologies for sale. The Solaris to Linux migration path is very well-traveled that it holds fewer surprises than additional technology changes. The benefit from migrating from Sun servers now as opposed to later is that the entire migration process is an extended one. When done effectively, there are few downturn or service interruptions during the transition and the whole operation is less disruptive in the company's operation. However requires time, with months of planning before a transition which might be done in some hours. This is followed as a result of months of post-migration monitoring when you the new system is normally meeting the organization's needs. The future stability in Linux allows IT departments more flexibility in their software decisions. Current application purchases is made with confidence, not worrying about computer itself changes making software out of date. Don't Take The Excursion AloneAlthough, as mentioned, this Solaris to Linux migration avenue is well traveled, so is a path up Mount Everest.