Tagged Questions
5
votes
3answers
387 views
Why is the theoretical RAM limit for RHEL 6 128 TB and how is this determined?
I'm studying for RHCSA and am confused by a statement I came across in some training material:
There is no practical maximum RAM, as theoretically, you could run 128 TB of RAM on RHEL 6. But ...
1
vote
0answers
152 views
Where does the Linux kernel reside in memory ?
From some book I have, I have in my notes that the Linux kernel resides at 0xc00000000 on 32-bit systems, and is mapped into user space for performance reasons.
Is this accurate ? How can I verify ...
3
votes
1answer
936 views
How to debug Linux kernel panic?
I am trying to debug a kernel panic. Panic message says unable to handle kernel paging request for address 40025694.
At the time of panic it was executing ldreq r10, [lr, #-4] @ get SWI instruction. ...
6
votes
2answers
648 views
An oom killer thats baffling me
I am not able to understand why would kernel issue this oom killer when I see enough memory is available:
Also why are there so many kernel cache pages allocated?
I say enough memory is available ...
1
vote
2answers
313 views
NAND flash memory wear & virtual memory page swap
For a linux kernel with virtual memory and disk storage, pages are swapped back and forth into swap area. But embedded systems generally use NAND flash instead of disk. A NAND flash has a limited ...
