How big a kernel dump can be on 32GB m/c.

Hi kernelnewbies, I have a system which has 16GB memory +16GB for swap space total space required in /var/crash is 32GB. Can I keep less then 32GB for /var/crash ? many times I see kernel dump less then 20GB. My problem is we have 32GB RAM memory in production machine on RHEL5U5 and I don't have

Re: Point of brk()?

Only if stack and heap did not grow in opposite direction. Only if you did not care for shared libraries memory usage. On Tue, Oct 5, 2010 at 5:30 PM, javad karabi wrote: > What is the point of having an adjustable end to the "data segment"/heap? > > Why not just give a process all of the availab

Point of brk()?

What is the point of having an adjustable end to the "data segment"/heap? Why not just give a process all of the available memory, I.e. set the end_of_data variable to the highest possible value, then let paging do the rest? Much love for kernel newbies!

Re: Digest of Questions & Solutions

On Tue, Oct 5, 2010 at 4:34 PM, John Mahoney wrote: >> John - appreciate you posting that link for me but I guess, I already have >> it. Infact, if you read my mail once again you will realize that I asked for >> a compilation of queries posted & solutions offered over the years in the >> pdf form

Re: Digest of Questions & Solutions

> John - appreciate you posting that link for me but I guess, I already have > it. Infact, if you read my mail once again you will realize that I asked for > a compilation of queries posted & solutions offered over the years in the > pdf format (if not all the years then probably for all months of

Re: Digest of Questions & Solutions

On Tue, Oct 5, 2010 at 12:21 PM, Linux "Kernel" Explorer wrote: > Hi James Bond & John Mahoney, > > Thanks a ton for replying. I guess, I did my share of search & experiments > before posting this one out.I am good on Hygiene factors. > > John - appreciate you posting that link for me but I guess,

Re: Linux Kernel Development - A Practical Approach

i've dropped all but the kernelnewbies mailing list from the CC list. On Tue, 5 Oct 2010, Tapas Mishra wrote: > On Tue, Oct 5, 2010 at 12:20 AM, Linux "Kernel" Explorer > wrote: > > Hello Everyone, > > > > I am reading 'Linux Kernel Development' by Robert Love these days. > > > > This book t

Re: Digest of Questions & Solutions

Hi James Bond & John Mahoney, Thanks a ton for replying. I guess, I did my share of search & experiments before posting this one out.I am good on Hygiene factors. John - appreciate you posting that link for me but I guess, I already have it. Infact, if you read my mail once again you will realize

Re: Persistent tap device

Hi Mulyadi and John, On 4 October 2010 23:03, John Mahoney wrote: >> >> Most of the times, network related devices aren't represented as file >> inside /dev. This is...well, you might think,against common sense that >> "everything is file" under Linux. @Mulyadi: Yes, that's right. I saw the so

Re: system call address

>> I have seen kernel symbols (talking in general, not sys_call_table), >> appear in /proc/kallsyms in some version of kernel and not in others. >> Symbol definition is same in both kernel revs. >> >> What makes symbol appear or not in /proc/kallsym > > It's a configuration option when you compile

a process having different credentials' files

hi all, a process : current --> files_struct --> file -->cred || (* files) (*fd_array) it seems a process can have the files having different credentials . for example let a process be running in a high privilige level . after set

Initramfs generated in Fedora 13 but not in Ubuntu 10.04

Hi all, I just compiled and installed kernel 2.6.35.4 into Fedora 13_x86 and noticed that an initramfs file was generated/installed in the boot folder. Last week, when I unsuccessfully tried to compile and install the same kernel in Ubuntu 10.04, no initramfs or initrd was generated. In both cases

Re: Digest of Questions & Solutions

On Sun, Oct 3, 2010 at 2:25 PM, Linux Explorer wrote: > Hello Everyone, > > Hi explorer things do not work that way as you asked. Do some experiment and then mail here may be some of us can point you to right thing. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies"

Re: Linux Kernel Development - A Practical Approach

On Tue, Oct 5, 2010 at 12:20 AM, Linux "Kernel" Explorer wrote: > Hello Everyone, > > I am reading 'Linux Kernel Development' by Robert Love these days. > > This book takes you on a theoretical journey of the linux kernel > world.Though the book is good but I do have my share of concerns. Exactly

Re: Digest of Questions & Solutions

Did you try google for kernel-newbies archive? This is really basic knowledge I am not trying to be a hard *ss. here is one. I know gmane has most lists archived also as a general rule. http://mail.nl.linux.org/kernelnewbies/ -- John

Re: system call address

Il 05/10/2010 1.53, Usman S. Ansari wrote: Not any more, sys_call_table is not exported any more in recent kernel (at least 2.6) I have seen kernel symbols (talking in general, not sys_call_table), appear in /proc/kallsyms in some version of kernel and not in others. Symbol definition is same