Linux Talk | Linux Memory Management

[@philmulley59]

Great piece, Joe. I have an old Dell machine that I use as a Squeezebox media servier amongst other things. Its always worked well but it is very leaky in terms of memory usage. I heard your comment about the command to "reclaim" memory being potentitally useful for media servers so I set this up as a Cron job and its really done the business. Thanks again.

[@EzeeLinux]

+Phil Mulley Cool. Glad to hear it helped. :)

[@JorgeEscobarMX]

Almost done watching the video, added to "watch later" playlist. Very interesting RAM monitoring programs, and they are already installed. Thanks a lot for this video. Keep up the good work.

[@EzeeLinux]

+Ricardo Escobar Thank you. :)

Though I never suspend/hibernate, I have 16GB RAM and don't have a swap partition and Linux has been working all fine since years.

[@spencerreppe7558]

Thank you, I forgot that as SSDs write and read it wears out their cells.

[@funkydunky1671]

good voice. it is a pleasure to listen to. keep up the good work!

[@motim92]

SSDs have quite the endurance, I would not worry about it. 700-2000TB written per 250gb SSD is about the endurance you can expect from an SSD.

[@naveenkumar-kw2ch]

Buffer occupying more in Db server is any solution to improve stability.

[@zdw123]

Really appreciated, I have learned something about Linux memory management from this video.

[@gleventhal]

You should mention what the alternative to swapping is, it doesn't just "not swap" with a lower swappiness, it will choose to drop pages from the page file instead of swapping, which could potentially be worse performance if your workload is constantly needing to read and write from files on the filesystem and less so accessing anonymous pages .

[@EzeeLinux]

Yep. I don't even mess with this anymore and leave it set to the defaults. It's a trade off either way. :)

[@utubeuser907]

nice video... cache that was mentioned to drop... that is the page cache stored in RAM.. and has nothing to do with cpu cache... just to make it clear for others who are watching this..

[@abhabh6896]

I type the long code over and over, doesnt even ask me for password, doesnt do anything.

How come SimpleScreenRecorder is running at 67% CPU but is noted as "S" (sleeping) ?

[@hannesthiersen8170]

Hey Joe. You're contradicting yourself when talking about swappiness. You're saying that if the value is 60 the system starts swapping when 60% of the memory is used, but then setting the swappiness value to 15 would mean the system starts to swap when 15% is used according to this logic. After you've set the value to 15 you state that it will start swapping when 85% of memory is used which contradicts the previous statement.

[@EzeeLinux]

Sorry if I didn't make it clear enough. Swappiness is less likely the lower the number is. :)

[@Toimi]

the watch command is awesome :o why did i not know about this?

[@PoeLemic]

Very good and helpful video. New to channel, but love how you are teaching. I am really benefitting.

[@RamiJaloudi]

Very informative, thanks!

[@diablominero]

What happens if I set my swappiness to 1? Does that block most non-essential swap operations while still letting system crashes write to it?

[@EzeeLinux]

Something like that. It's not exact. If you want to limit it 10 is about the lowest you should go. :)

[@misium]

Seriously, give me a good reason to ever manually clear the caches.

[@cthedosboss5113]

he just gave u one

[@miketh1234]

How would you use ssh to run the second script?

[@mtpolak]

Let me share a tip for "clear the console": try to use Ctrl+L learned few days ago after years of using clear command :'-\

[@alekssandroassisbarbosa3749]

Isn't that oppose on SSD? I mean, why isn't that less damageable?

[@mcalnd]

Great video, just what I was looking for - thanks

[@DrayseSchneider]

Isn't the "sh" shell they bourne shell? Where bash is the bourne again shell?

[@EzeeLinux]

+Steven Schneider Yep. :)

[@sattish99]

Very useful and informative

[@Silverballer48c]

Are you from Colorado ? Im trying to place the accent

[@gjj8351]

You didn't answer the question you spoke about in the beginning

[@23angelful]

Very informative video,excellent.

[@DonutDeflector]

Hey Joe, what settings do you use for SSR on that computer?

[@EzeeLinux]

+Donut Deflector I pretty much leave it at the defaults other than to choose what microphone to use. It works just fine. :)

[@DonutDeflector]

Joe Collins Thanks!

[@thadguy271]

great info, very insightful...I think you could benefit from using the ctrl-c and ctrl-v commands when copying and pasting, just a thought

[@stevew270]

Haven't used swap for over a year, no issues at all.

[@cr74life96]

You someday would need it and then you would wish you had a swap. OS really in bad situation when it runs out of memory and there's not swap.

[@RussTeeTrombone]

Awesome video. Cheers!

[@farieddebruyns338]

Very good teacher

[@Arunkumarpuskur]

Awesome bro. Thanks

[@tinicum54]

Sort of off topic. Imagine Joe trying to stream this on that machine with win10.

[@farieddebruyns338]

Thank you.

[@scottvigerlinux]

cron kron crawn ? how do we write it pls (;

[@EzeeLinux]

+scott viger It's cron. help.ubuntu.com/community/CronHowto

[@scottvigerlinux]

thanks

[@djsensacion7]

+Joe Collins I hope you have a video on cron jobs and how to set it up soon ! Thank you !

[@EzeeLinux]

+Miguel Sensacion Just posted one... :)

[@WMRamadan]

Honestly Linux has the worst memory management I have ever seen. On the other hand Mac OS has the best memory management I have ever seen!