What is a kernel - Gary explains
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- Опубликовано: 23 ноя 2024
- Read more: goo.gl/WfOJST
Spend enough time around Android and eventually you will come across the term, “the Linux kernel.” What is a kernel? Let’s find out!
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My mum is a kernel...want to eat some cereal late night..have to go trough the kernel..want to go out with friends..have to go through the kernel..wana get some money..have to go through the kernel
nice real life example you have made up
💯👍😂
I read this comment in my head with Gary's voice. LOL.
Hahaha superb example 🤣🤣
And that's a nice example that made my day 😂
The kernel is the central module of an operating system (OS). It is the part of the operating system that loads first, and it remains in main memory. Because it stays in memory, it is important for the kernel to be as small as possible while still providing all the essential services required by other parts of the operating system and applications. The kernel code is usually loaded into a protected area of memory to prevent it from being overwritten by programs or other parts of the operating system.
wow this comment made so much sense compared to other online courses teaching the same thing. Thank you!
Gary is like the computer science teacher we wished we had...
right. some they teach and they don't know what they teaching. just reading the book :(
exactly..so true! Noajm Messy
My first semester CS professor is an asshole and downright condescending. By the 2nd semester, the size of the class is halved. I am pretty sure it's because most changed their major because the that horrid professor literally killed their passion for the subject.
In fact I've learned from the internet much more than I would in school!
Infinite Buffer 'in fact' ... I guess some English lessons on you tube need to be found. 😉😄 (just bants)
Say kernel again.
lol seriously XD
Nate Harris : colonel. 😂
keeeernel ... leviosaaaa
@@heatxtm HARRY POTTER
@@spwim this is the comment i was looking for
Basically, there's a penguin in your phone
benaloney Linux is everywhere
Tushar Choudhary there's a little bit of Linux in all of us
benaloney Actually, there's a little bit of LinusSexTips inside of all of us...
+pnp072000 Which shows that pulling out, does work!
That explains so much. What are you supposed to feed it?
I want him as my lecturer in my college.
Genius Gary.
I don't normally comment but this deserves a 9.5 /10. The detractor being some of the graphic presentations flashed too fast when Gary was speaking and these are invaluable to blended learners.
However, this is a very important topic when undertaking the Certified Secure Software Lifecycle Professional Exam.
We need more teachers like Gary.
The colonel of kernels.
Good explanation.
lol
+Ride Alongside Thats KFC
KFC also has a kernel called kernel sanders
Holy Son BWAHAHA!
That's Colonel
Makes me hungry when hearing "Kernel"
This video is pretty good. I thought he may introduce some complicated name through this video for intruducing the kernel when I opened, but it is not. Every sentence he said is clear and simple, which make people never realise "kernel" can understand.
I really appreciate videos like this. It shows regular joes like me how much effort and thought goes through our devices every day, so we can really appreciate the scale of it all. So once again Gary, it's a pleasure to watch your videos, thank you very much.
Guru Gary, thanks for enlightening
me.... _/\_
If I had received explanations like this ten years ago my abilities at IT would have come on by leaps and bounds. Many Thanks.
ive been flashing and jailbreaking my phones since galaxy s i9000 and iPhone 2G days as a hobby by going on forums and following tutorials. I pursue a career in medicine and I am remotely related to Computer Science or any other technical stuff. i did come across a few explanations to my que for kernels and by far this was the best explanation i could understand. TYVM !
Beautifully explained.....failed to explain many times in interviews about kernel..read many books...did not understand properly......
Damn you explained me what Kernel is, my computer science professor at university couldn't explain it to my colleagues in just above 2 weeks....
That means he understands it good enough.
Kernel is important! BIOS is much more important. Even in Android Developers program got to have a access to the hardware in order to build a kernel. Kernel's are much more simple in Android with for fewer cell phones than Desktop or laptop computers. Not as many devices to connect as in Linux. Of course a college professor isn't probably going to be able to build a kernel, because there more worried about security, networking, viruses, ssh, telnet and just overall repair and upkeep of the hardware on the floor. Other factor Gary forgot to explain is after 1 year or less most of these great ideas are turned into an app available on the Android Store.
that's nothing! MY COMPUTER SCIENCE TEACHER BELIEVES IN CORE i4 !!!!!
@@fadisoltan5113 He must have saw 4th gen i5 as 4500u and thought it would be i4😂😂😂😂
@@shivampachchigar8678
Wonders never stop in 3rd world countries 😂
Would be so cool to hang out with Gary Sims and talk tech with him!! The man knows a thing or two about the devices we use in everyday world use. GREAT VID!!!
Linux kernal is really optimized, and is continually worked on by the community. Win!
linux is my favourite I got a older macbook pro for the build quality but really miss linux so I wanna dual boot
Negdo Kavc big complications
one of the best explainers ever created
Gary - another outstanding presentation. I learned something beyond the restaurant waiter analogy I learned when I started messing around with root. Thank you.
Gary, you are the man, man. You cannot stress enough that you absolutely need root access to properly install a custom kernel. That saves people a lot of headache if they try to find a definitive answer whether or not you need root access to install a different kernel.
My conclusion, custom rooms can be flashed via custom recovery which only requires an unlocked bootloader because it is basically end user stuff.
In general terms, Gary’s coverage of the major points of what makes a kernel definitely ranks among the best, captain!
Thank you for you contribution on Kernel. How explicit it was appreciate your effort.
Thanks for sparking the interest. Nice little introduction with historical perspective which is very important to understand where we stand
Your voice is soooo relaxing
British?
+Dhruv Verma Who? me? Yep!
+Gary Sims Can you be my Computer Systems' teacher?
Ikr 😂😂
really?
Very succinct summary at the end.
I use a custom kernel for my Note 2. It gives much more configuration options, and it improves the audio quality and boosts up the volume when I use headphones.
Much better than the original kernel.
this type of stuff is what makes you guys THE Android authority. keep it up guys
Gary, you said near the end of the video that these companies spend millions finding the perfect balance of performance and battery life. What irritates me is that these companies still screw up the performance and/or battery life despite the fact that they have all the best engineers that money can buy!
The Oneplus X for example performs like garbage when gaming on the stock kernel setting, yet when you switch it over to the more conservative setting, gaming performance dramatically improves. Can you explain that? How about my LG G4? While on Lollipop, it had pretty good battery life along with fairly good gaming performance. But now with Marshmallow, it feels like I'm gaming with an $80 tablet with poor battery life. Sluggish, yet power hungry!
I'm not trying to harp on you or anything, but I find it perfectly understandable when users want to tweak the performance and battery life of their kernels because the companies couldn't get it right on their own. Spending millions doesn't mean diddly when you actually test these devices in the real world. If the companies actually got it right with giving us the optimal performance and battery life the first time, then there would hardly be any need for custom ROMS and kernels.
Dude wtf how did one plux ten released 4 years back?
Knowing that low-level part of OS coding is bloody hard, I don't even wonder how hard it is to make a good kernel.
It takes some skill, but you don’t have to be a genius. Linus got the basic Linux kernel booting on his own 486 PC all by himself, after I think just a few months’ work. Others have done a similar thing, before and since. Then he went public and it all snowballed from there.
2:14 just saving this for myself, thanks for the video!
Great lecture, don't rush through the information intensive slides though.
I loved how Gary explain Tech!
As far as I know kernel is not the lowest piece of software on every OS, it is so in Linux. On other operating systems like Windows or some real time operating systems like FreeRTOS you have device drivers/HAL (hardware abstraction layer) that are not part of the kernel nor a part of OS. So the OS has certain APIs to certain hardware modules and then it is the task of driver developers to create drivers that actually implement those function calls from OS API. Maybe I'm wrong, if so feel free to correct me.
This is pure tech content .. Superb explanation ..
*Even if i dont know his name, i would say his name is Gary*
Lmao why do I feel the same
this is the best comment on any youtube video
Great explanation. And if IT videos ever get boring there's always the 6 o'clock news 😅
Never had it so concise! Uni seems a lifetime away.
Thanks for uploading
Thank you, I have been trying to find a clear explanation of what is a kernel
I come to android authority just for Gary's videos.
damn this guy knows his shit. expert level explanation. well done sir.
thanks Mr.Gary ! i wish i can have you as my teacher back in the college.
Good Video and Explanation :)
HardwareKernelDrivers(in other words, Kernel addons)OSSoftwares
There should be more videos like this on youtube. Teaching us some little notions about computer science.
I personally believe that the creation of a whole new operating system from the kernel up is a good idea. Honestly I like the idea of an os that is super simple and allows it to utilize as mich of the hardware as possible.
So what’s stopping you from making one
@@5gun1 his own mind
Thanks Gary! I've been wondering what a kernel is.. Finally the time has come.
100% less music and its perfect video
I absolutely love you. I could listen to you talk about this shit all day.
I used to run Cyanogenmod on my phones many years ago and undervolting during those days helped with the terrible battery life of that era of phones. Today is less about battery and more about security and privacy though and thankfully there are options! I love this explanation, where was this video in 2004 when I first started putting Linux on old computers? I definitely could have used it 🙂
About the bricking, bricking is only possible if the bootloader isn't unlocked while trying to use a custom kernal, bootloader unlocked can allow u to reinstall the rom again, with Xiaomi phones it says "fastboot mode" if u don't have a os installed on ur phone which I'm glad they added cuz in some phones u can't reinstall roms even if the bootloader is unlocked it just won't straight up install or boot.
The thing about changing kernel is the compatibility with peripherals (camera, sensors, backlight) Mainly because they are binaries which aren't mean to run on others kernel causing low performance on them.
You are just AWESOME, thank you for these videos, they are great!
Awesome explanation. Will just have the word "kernel" stuck in my head all day. One more time: kernel.
So the kernel is like a magical little man we have in our device doing thousands of tasks and taking notes at the same time
Thanks. This helped me understand reading about Kernels in my Securing Systems textbook by Schoenfield.
Good Overview about Monolithic and micro Kernel, good job.
⭐⭐⭐
" .. computers are incredibly dumb. All they're doing is following instructions. "
You should meet humans, they struggle to achieve the above
my handsfree set burst by Gary's audio mode. Goood job though.
I like Gary and his explanation..... but I don't like the glare on his glasses and a thumbs up for your detailed explanation.... I wish I had a teacher like you in my college then I would've loved to have a convo
Thank you! I've been wondering what a kernel was for quite some time.
The way he says "kernel" is so satisfying and relaxing. No homo😂
Keoooooooo nel
Why did you say no homo lmao what's gay about that
@@N0purpose kernel fetish
@@N0purpose holy shit that was 2 yrs ago lmao idfk why
@@MJ-sp3zh lol i didn't even notice that😂
Your channel is great man! I am an electronics student and we don't get this quality information even though we're working with microcontrollers all the time.
Thanks. I always thought a kernel was that annoying thing that gets stuck in my teeth after eating popcorn.
Man this video would be a wickedly challenging drinking game if you had to take a shot every time he says, "Curnull".
channel should be called open authority or os authority
or kernel authority
Though I already know all about it but still it's great to hear it from Gary😀
Rock on Gary, your explanations are AWESOME! You should go over some of the most common partitions in Android
just gonna leave this here: If you have issues with the brother printers on linux (Fedora) it is because the drivers they released were for very old versions of fedora and hence they arent 100% compatible. usually you get them to work but it might require a bit of knowhow and tinkering with a few config files after install.
7:43 "...you can guarantee they certainly would."
Call it a hunch, but I doubt that
Excellent video! Clear and concise, as all things related to education should be.
Man what a great video. Simple, yet informative enough. Thanks.
Excellent job Gary! And thank you soo much for the explanation. I was not knowing anything about kernels. Now I got an idea. Thank you, Android Authority.
Linux kernel is a hybrid kernel. That's why you can load modules...
And you don't need root for flashing a custom kernel. Unlocked bootloader != root
Excellent video! Loved it very much
Thanks all you are an excellent explainer and by the way I know your channel more than 10 years doing good 👍 job
very useful video for me and for all how are searching for kernel knowledge..................!
We all need someone in real life to explain computer stuff like this in simple terms...
Good explanation of a kernel. Thanks for the post.
I'm nit picking here, but then terminology is important as the mix-up causes unnecessary confusion. In this case one doesn't download a kernel to install it, one flashes it. However, if the loading terminology was to be used, it really would be uploading, as in uploading the image to flash, and not downloading it. Although uploading would directionally be more correct, that's still incorrect terminology. The correct terminology, as previously stated, is flashing, as in flashing a kernel image.
Thank you for the video. It is awesome to know what it is inside.
Okay, so basically I'd just like to interject for a moment. What you’re referring to as Linux, is in fact, GNU/Linux, or as I’ve recently taken to calling it, GNU plus Linux. Linux is not an operating system unto itself, but rather another free component of a fully functioning GNU system made useful by the GNU corelibs, shell utilities and vital system components comprising a full OS as defined by POSIX.
Many computer users run a modified version of the GNU system every day, without realizing it. Through a peculiar turn of events, the version of GNU which is widely used today is often called “Linux”, and many of its users are not aware that it is basically the GNU system, developed by the GNU Project. There really is a Linux, and these people are using it, but it is just a part of the system they use.
Linux is the kernel: the program in the system that allocates the machine’s resources to the other programs that you run. The kernel is an essential part of an operating system, but useless by itself; it can only function in the context of a complete operating system. Linux is normally used in combination with the GNU operating system: the whole system is basically GNU with Linux added, or GNU/Linux. All the so-called “Linux” distributions are really distributions of GNU/Linux.
I'm still confused. Obviously, there's hardware. Then there are apps. And in between, there's OS. Now, you're saying, there are 2: GNU and Linux. Yet, the video treat them as one.
So, the question is: At what point does GNU stops and Linux start? Wouldn't the hardware interface to CPU be hardwired on the PCB? Wouldn't that cause the need for unique Kernel for *every* hardware configuration? What about incompatible CPU instruction? Is that resolved at user level, OS API, or Kernel?
@@simpletongeek It's a copy pasta.
Android doesn't have the GNU corelibs, therefore it would be Android/Linux
👌excellent,was just having a discussion with some genius in the wonderful youtube comment section about what a linux kernel is. What linus actually made, and what an operating system is.
Three are actually three types of kernels, not two as discussed in this video. There are Monolithic and Micro Kernels as well as a Hybrid Kernel that incorporates the best of both the monolithic and micro kernels discussed. A modern, well developed, Hybrid Kernel is found at the root of all Macs and iOS devices, its known as the XNU Kernel. en.wikipedia.org/wiki/XNU
9:49 video and he says Kernel 78 times...
Nearly 8 KPM!
Colonel Sanders is a different kind of Colonel Where as an operating system Kernel Is spelled like a kernel of popcorn
Get A Life!
@@siddhantbele156 Get A Profile Picture!
great work! you're my favorite RUclipsr on AA since every time I watch one of your videos I learn something new.
You have a great way of Explaining complex ideas! How do you do it?
I wish my computer science prof was like you.
Plethora of knowledge as always, great stuff Gary
well explained and understood wish could have a computer science teacher like you i think i could be way far with computer knowledge
Hudson Junior me?
i always wanted to understand kernel
i was also commented on sir garry previous videos
finally it's here
thnk u
wow that was really good presentation. I just downloaded the kernel for Jupyter notebook and I was wondering what it actually is?
Great explanation colonel.
The kernel of macOS (formerly OS X) is called XNU. Darwin is the open-source version of the actual operating system as a whole
Another cracking video Gary.
no one realizes that "GB" stands for "Gary Byte" this guy is just amazing!
Favorite section of AA, and as always, Gary delivers :) Thank you for sharing with us this awesome info
Love all of these kind of videos, very interesting to learn all the different things that go in inside phones and computers, keep up the awesome work! :D
This video helped me a lot to understand...that I don't want to be an IT.
To each their own. You should become what you love, what you're truly interested in.
very good explanation sir