What about when you are running an Oracle database and don't want to cache the database files twice, once by the database it's self and once because the OS has ram. Then you get a double hit when you are looking for something. Once against the file system cache and then you hit the database. Is there a way to tune for this? > -----Original Message----- > From: fedora-devel-list-bounces@xxxxxxxxxx [mailto:fedora-devel-list- > bounces@xxxxxxxxxx] On Behalf Of Gregory Maxwell > Sent: Friday, February 06, 2009 4:26 PM > To: Development discussions related to Fedora > Subject: Re: How to reduce cached memory? > > On Fri, Feb 6, 2009 at 5:57 PM, Joshua C. <joshuacov@xxxxxxxxxxxxxx> > wrote: > > I have kde 4.2 and f9. After 2+ hours on my computer it has about > > 1,4GB cached memory. I don't see him releasing this memory after time. > > I know it comes from the apps being open but it seems the kernel > > "never" releases the memory after the app terminates. How to make the > > kernel free this memory? I've seen similar cases with kde 3.5.10 and > > f8 and f7. I know kde eats memory but this is too much. Who caches so > > much of it? Why? > > > > The mashine has 2,6 GB RAM (still x86) and 512mb swap which is rarely > > used (~ 50mb at most) and combined cached + app memory totals about 2 > > gb. > > Why do you regard this as a problem? > > 100% of your memory should be used at all times. Memory which is > unused is wasted. To prevent waste the Linux kernel keeps frequently > used things from disk in memory but (clean) Cached memory can be > dropped as soon as an application requests ram so it is "as good as > free" from a usage perspective. > > -- > fedora-devel-list mailing list > fedora-devel-list@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/fedora-devel-list -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
