Messages in this thread | | | From | Vinicius <> | Subject | Re: Kernel doesn't free Cached Memory | Date | Fri, 22 Jul 2005 13:00:51 -0300 |
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Em (15:49:49), Alan Cox escreveu:
>On Gwe, 2005-07-22 at 08:27 -0300, Vinicius wrote: >> Hi all! >> >> I have a server with 2 Pentium 4 HT processors and 32 GB of RAM, this >> server runs lots of applications that consume lots of memory to. When I >stop >> this applications, the kernel doesn't free memory (the memory still in >use) > >See any FAQ on the Linux memory management - memory is reclaimed when >needed not when nobody is using it. That makes things more efficient. > >> and the server cache lots of memory (~27GB). When I start this >applications, >> the kernel sends "Out of Memory" messages and kill some random >> applications. > >Some RHEL3 kernels had a problem with very large memory sizes and 2.4. >That should not be the case in the current RHEL3 kernels. 2.6 handles >very large systems a lot lot better, and of course the fact real >computers now have 64bit processors has also rather improved life. > >Alan > >----------
Thanks Alan,
I also read on the Linux-Kernel that the problem may be related to an exhaustion of your kernels address space, I read that the hugemem-kernel might be the solution to this case since it has 4GB for the kernel memory plus 4GB for user process. How can I define if my kernel memory is beeing exhausted? Does this exhaustion of kernel memory can cause Out Of memory errors ?
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