* memory foorprint of kernel modules
@ 2004-02-12 20:24 Gopi Palaniappan
2004-02-12 20:45 ` Richard B. Johnson
0 siblings, 1 reply; 3+ messages in thread
From: Gopi Palaniappan @ 2004-02-12 20:24 UTC (permalink / raw)
To: linux-kernel
Is there an easy way to measure the memory/RAM footprint of dynamically
loaded kernel modules?
Are there tools similar to "pmap" for this purpose?
thanks,
Gopi
--
Motorola Inc.
Personal Communications Sector,
Urbana-Champaign Design Center,
1800 S. Oak St, Champaign, IL 61820.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: memory foorprint of kernel modules
2004-02-12 20:24 memory foorprint of kernel modules Gopi Palaniappan
@ 2004-02-12 20:45 ` Richard B. Johnson
2004-02-12 22:34 ` Gopi Palaniappan
0 siblings, 1 reply; 3+ messages in thread
From: Richard B. Johnson @ 2004-02-12 20:45 UTC (permalink / raw)
To: Gopi Palaniappan; +Cc: linux-kernel
On Thu, 12 Feb 2004, Gopi Palaniappan wrote:
> Is there an easy way to measure the memory/RAM footprint of dynamically
> loaded kernel modules?
> Are there tools similar to "pmap" for this purpose?
>
> thanks,
> Gopi
> --
> Motorola Inc.
> Personal Communications Sector,
> Urbana-Champaign Design Center,
> 1800 S. Oak St, Champaign, IL 61820.
>
You might make some sense of /proc/ksyms...
This is for a module called ramdisk.
Script started on Thu Feb 12 15:41:10 2004
cd /proc
# strings ksyms | grep ramdisk
[ramdisk]
[ramdisk]
[ramdisk]
[ramdisk]
[ramdisk]
[ramdisk]
[ramdisk]
[ramdisk]
d4a19510 __insmod_ramdisk_S.bss_L4
[ramdisk]
d4a19100 __insmod_ramdisk_S.rodata_L563
[ramdisk]
[ramdisk]
[ramdisk]
d4a18000 __insmod_ramdisk_O/root/Message-Based/drivers/target/ramdisk.o_M4027E0AD_V132120
[ramdisk]
[ramdisk]
[ramdisk]
[ramdisk]
d4a18054 __insmod_ramdisk_S.text_L4237
[ramdisk]
[ramdisk]
[ramdisk]
[ramdisk]
d4a19398 __insmod_ramdisk_S.data_L5
[ramdisk]
# exit
exit
Script done on Thu Feb 12 15:41:45 2004
Cheers,
Dick Johnson
Penguin : Linux version 2.4.24 on an i686 machine (797.90 BogoMips).
Note 96.31% of all statistics are fiction.
^ permalink raw reply [flat|nested] 3+ messages in thread* RE: memory foorprint of kernel modules
2004-02-12 20:45 ` Richard B. Johnson
@ 2004-02-12 22:34 ` Gopi Palaniappan
0 siblings, 0 replies; 3+ messages in thread
From: Gopi Palaniappan @ 2004-02-12 22:34 UTC (permalink / raw)
To: root; +Cc: linux-kernel
Hi Richard:
I am not sure looking at the ksyms will give me an actual measure.
Lets take an example,
I have a driver "foo.o" that i insmod, lets say. If this driver uses kmalloc
or malloc to dynamically
utilize RAM space for its internal operation, I don't think your suggested
method will capture
that dynamic allocation of memory, am i correct?
I want to get a real-time ram usage of a specified dynamically loaded
module.
thanks,
Gopi
On Thu, 12 Feb 2004, Gopi Palaniappan wrote:
> Is there an easy way to measure the memory/RAM footprint of dynamically
> loaded kernel modules?
> Are there tools similar to "pmap" for this purpose?
>
>
You might make some sense of /proc/ksyms...
This is for a module called ramdisk.
Script started on Thu Feb 12 15:41:10 2004
cd /proc
# strings ksyms | grep ramdisk
[ramdisk]
[ramdisk]
d4a19510 __insmod_ramdisk_S.bss_L4
[ramdisk]
d4a19100 __insmod_ramdisk_S.rodata_L563
d4a18000
__insmod_ramdisk_O/root/Message-Based/drivers/target/ramdisk.o_M4027E0AD_V13
2120
d4a18054 __insmod_ramdisk_S.text_L4237
d4a19398 __insmod_ramdisk_S.data_L5
[ramdisk]
# exit
^ permalink raw reply [flat|nested] 3+ messages in thread
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2004-02-12 20:45 ` Richard B. Johnson
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