Re: max heap usage of a Linux process

[Prasanta Sadhukhan <Prasanta.Sadhukhan@Sun.COM>]

Glynn Clements wrote:

>Prasanta Sadhukhan wrote:
>
>  
>
>>Actually, I have the process-pid(s) and I want to find out 
>>programmatically, what's the max heap size that had been consumed by 
>>that process at any given moment(based on user command) from another 
>>process.
>>    
>>
>
>Then you need to read the files in /proc/<pid>/*. There isn't a system
>call to get resource usage for another process.
>
>Note that you won't be able to determine how much of the allocated
>heap is free or used; that information is internal to the process, and
>isn't visible externally.
>
>  
>
thanks. Infact, I used /proc/<pid>/statm to find out total size, RSS and 
shared memory from 1st 3 entries. Don't know about the accuracy or not 
but that will do. But, this file does not tell about max. heap consumed 
by a process nor does /proc/pid/status and I am not able to decipher 
/proc/pid/stat. Does anyone knows how to interpret stat file?