RE: Question about free/used memory on Linux

Thanks Padraig. Any idea how to get the size of running linux kernel ? Ravi -Original Message- From: Pádraig Brady [mailto:[EMAIL PROTECTED] Sent: Wednesday, November 14, 2007 3:58 AM To: Ravinandan Arakali (rarakali) Cc: Vaidyanathan Srinivasan; Linux Kernel Subject: Re: Question

RE: Question about free/used memory on Linux

AIL PROTECTED] Sent: Sunday, October 21, 2007 10:50 PM To: Ravinandan Arakali (rarakali) Cc: Linux Kernel Subject: Re: Question about free/used memory on Linux Ravinandan Arakali (rarakali) wrote: > Hi Vaidy, > Thanks for clarifying several of my doubts. > > To answer your que

RE: Question about free/used memory on Linux

hanks, Ravi -Original Message- From: Pádraig Brady [mailto:[EMAIL PROTECTED] Sent: Monday, October 22, 2007 3:05 AM To: Ravinandan Arakali (rarakali) Cc: Linux Kernel Subject: Re: Question about free/used memory on Linux Ravinandan Arakali (rarakali) wrote: > Hi kernel gurus, > I a

RE: Question about free/used memory on Linux

Hi Vaidy, I will use the metric you have suggested. Thanks, Ravi -Original Message- From: Vaidyanathan Srinivasan [mailto:[EMAIL PROTECTED] Sent: Sunday, October 21, 2007 10:50 PM To: Ravinandan Arakali (rarakali) Cc: Linux Kernel Subject: Re: Question about free/used memory on Linux

RE: Question about free/used memory on Linux

unday, October 21, 2007 12:01 PM To: Ravinandan Arakali (rarakali) Cc: Linux Kernel Subject: Re: Question about free/used memory on Linux Ravinandan Arakali (rarakali) wrote: > Hi kernel gurus, > I am trying to find out the memory that's used on my linux box. > I find that there are quite

Question about free/used memory on Linux

Hi kernel gurus, I am trying to find out the memory that's used on my linux box. I find that there are quite a few confusing metrics. How do I find out the "true" used memory ? 1. For eg. "free -m" shows free memory (excluding buffers/caches) as 308 MB while I can see(from "df" output) that the t

Question about core file generation

Hi, When a process dumps core, the do_coredump() initiates the core file generation. Is this operation synchronous(does the kernel wait for core to be completely written to disk) ? Basically, if I have the parent process waiting for exit of child which dumped core, can the parent access the core im

RE: Question about scheduling in 2.4.20

ext 4 secs. Does this look like a fairness/starvation issue ? Thanks, Ravi -Original Message----- From: Ravinandan Arakali (rarakali) Sent: Thursday, June 14, 2007 10:02 AM To: Linux Kernel Subject: Question about scheduling in 2.4.20 Hi, I have a question about scheduling latencies in 2.4.

Question about scheduling in 2.4.20

Hi, I have a question about scheduling latencies in 2.4.20. We are seeing that our process (started with default priority, normal fork, exec) is not scheduled on the CPU for 4 seconds (from our kernel traces). Is that possible under heavy load ? We believe the process is still alive but I wanted to

RE: Multiple instances of program sharing same text segment ?

Thanks Jeremy. Ravi -Original Message- From: Jeremy Fitzhardinge [mailto:[EMAIL PROTECTED] Sent: Tuesday, March 20, 2007 11:12 AM To: Ravinandan Arakali (rarakali) Cc: Linux Kernel Subject: Re: Multiple instances of program sharing same text segment ? Ravinandan Arakali (rarakali

Multiple instances of program sharing same text segment ?

Hi, We have multiple instances of the same executable running on our system. Do these instances share the text segment or are there multiple copies of the text segment(one for each process) ? Note that I am not talking about the shared libraries. I note that do_exec calls do_mmap to map the executa

RE: Clarification required about select vs wake_up race condition

] Sent: Wednesday, March 14, 2007 10:08 AM To: Ravinandan Arakali (rarakali) Cc: Linux Kernel Subject: Re: Clarification required about select vs wake_up race condition On 12/03/07, Ravinandan Arakali (rarakali) <[EMAIL PROTECTED]> wrote: > Hi, > I am facing following problem and was

RE: Clarification required about select vs wake_up race condition

EMAIL PROTECTED] Sent: Wednesday, March 14, 2007 4:08 AM To: Ravinandan Arakali (rarakali) Cc: linux-kernel@vger.kernel.org Subject: Re: Clarification required about select vs wake_up race condition On Mon, 2007-03-12 at 12:44 -0700, Ravinandan Arakali (rarakali) wrote: > Hi, > I am facing

Clarification required about select vs wake_up race condition

Hi, I am facing following problem and was wondering if somebody could help me out. Our char driver(pretty much like all other char drivers) does a poll_wait() and returns status depending on whether data is available to be read. Even though some data is available to be read(verified using one of o