Do I need Caches and why

When I look at in My Computer Memory info. and why it eats away my memory caches.
I believe there is no fix for it,ttto slow down a little is it?

Cache is good. Leave it alone.

What Ken said.

Linux has one of the best memory-management schemes I’ve ever seen. That’s one reason why it runs well on older hardware.

What will happen it will eat all 2gb of ram?:\

What you should be more concerned about, from the standpoint of system performance, is if you’re using a lot of virtual memory. That means that pages are being swapped to and from the hard drive, and you’ll notice a dramatic slowdown.

Well what about movies and music.:\

Interesting discussion here: Linux: Tuning Swappiness | KernelTrap
Cache behaviour can be controlled with the swappiness kernel variable. In a desktop with 2GB or more RAM I see no practical difference. With less RAM it has an impact depending on the machine role (desktop, server, realtime, etc.). Again in my experience, YMMV.

smpoole7 adjusted his/her tinfoil beanie to write:

> What Ken said.
> Linux has one of the best memory-management schemes I’ve ever seen.
> That’s one reason why it runs well on older hardware.

Ditto Ken and smpoole7.

unused memory is wasted memory, if linux needs it for apps then it will
otherwise it caches stuff it “might” need in the future allowing near
instant access instead of having to load from disk which is a lot lot


Nullius in verba
Nil illegitimi carborundum

I run yesterday almost to the max only left was 13mb,what will happen it max out will my computer blow in my facerotfl!rotfl!

Being cache, if new memory is needed parts of the cache will be cleared. It’s not a problem you should have to worry about. However if there is a specific reason that you want to clear the cache you can use the following command:
sync && echo 3 > /proc/sys/vm/drop_caches

Can’t happen. Cache is anything that’s not free, or in use by programs or buffers, so can never exceed available memory. As the OS keeps going, free memory gets turned into program memory, or is in buffer or cache memory. Those last two categories can be recycled anytime when needed for programs.

It’s when program memory exceeds available memory and the OS has to resort to swapping that the performance goes south.

what I did I transfer between 9GB–> 40gb with sub-folder from ext.HD to internal HD,I like it to reformat my ext.HD so I can use on Suse and WinXP/may win7 in future.
I was monitoring my ram that is all,if I burn my ram well get a new one.
I don`t worry and I appreciate all of you for your extra time for helping me.





Michael, as pointed out in another thread by a poster with the handle “primary,” I think you’re still thinking in “Windows” terms. I’m not a Windows basher – it certainly has its uses and it is, after all, by far the most popular – but it’s anything but perfect. The fact that Windows has problems with memory management, agressively swapping to disk when it doesn’t need to, allowing disks to become horribly fragmented, etc., etc. … … does NOT necessarily apply to Linux.

Sure, Linux was written by fallible people who are capable of making mistakes. But it started as a kernel project, and the user interfaces were added later (CLI first, then GUI). It’s quite highly-optimized and well-thought-out. The Kernel maintainers are constantly looking for tiny little tweaks that will make it a wee bit faster or more efficient.

And if you need proof of that, simply compare the press releases from Microsoft to those from the Linux kernel maintainers. They live in different worlds. lol!

A PS … (I’m feeling loquacious this morning, probably because I’m putting off going out in the rain to work on the control circuits at one of our stations!). :slight_smile:

Let me give you a common example. We routinely reboot our Windows workstations at the studios. We’ve just learned the hard way over the years that after a week or two, they’re so slow and clogged up that it’s just part of routine maintenance to do a clean shutdown and restart. And yeah, we regularly clean up temp files on them, too (touching on that other thread). But our Linux servers literally run for months at a time without a restart. There’s a reason why that’s possible under Linux. :slight_smile:

To be fair, some Windows partisans will argue that the latest versions can run for weeks without a reboot. :\ That may be in specific cases. But especially if you’re running older Windows software, you’ll generally find that you have to reboot and clean up from time to time. And yeah, you DO have to tweak the memory management in some cases.

I’m not criticizing you for asking these questions. But once you finally realize just how COOL Linux is “under the hood” (i.e., in areas that the average user never sees … i.e.e., the Kernel level), you’ll REALLY love it. :smiley:


My friend he is not a very,very good friend only a friend and ask him over email he not even answer me what kind of a person is he but anyway.
That person let his suse11.1 run 24/7/365 and no one hack in his computer ever,ja .He told me which version of suse should I using it.Look in there
K3b burner;) - openSUSE Forums.

Our place is raining to but see yeah later.:wink: