How to calculate the memory consumed by a “C” program in linux
I have written two C programmes
- one is using function pointer, and
- the other without function pointer.
Now i want to know the memory consumed by the two programmes , to see how memory can optimized.
memory performance cpu c optimization
edited Jun 3 '15 at 6:37
shivams
2,92611425
asked Jun 3 '15 at 6:07
NagrajNagraj
26112
add a comment |
I have written two C programmes
- one is using function pointer, and
- the other without function pointer.
Now i want to know the memory consumed by the two programmes , to see how memory can optimized.
memory performance cpu c optimization
edited Jun 3 '15 at 6:37
shivams
2,92611425
asked Jun 3 '15 at 6:07
NagrajNagraj
26112
add a comment |
I have written two C programmes
- one is using function pointer, and
- the other without function pointer.
Now i want to know the memory consumed by the two programmes , to see how memory can optimized.
memory performance cpu c optimization
edited Jun 3 '15 at 6:37
shivams
2,92611425
asked Jun 3 '15 at 6:07
NagrajNagraj
26112
I have written two C programmes
- one is using function pointer, and
- the other without function pointer.
Now i want to know the memory consumed by the two programmes , to see how memory can optimized.
memory performance cpu c optimization
memory performance cpu c optimization
edited Jun 3 '15 at 6:37
shivams
2,92611425
asked Jun 3 '15 at 6:07
NagrajNagraj
26112
edited Jun 3 '15 at 6:37
shivams
2,92611425
asked Jun 3 '15 at 6:07
NagrajNagraj
26112
edited Jun 3 '15 at 6:37
shivams
2,92611425
edited Jun 3 '15 at 6:37
shivams
2,92611425
edited Jun 3 '15 at 6:37
shivams
2,92611425
2,92611425
asked Jun 3 '15 at 6:07
NagrajNagraj
26112
asked Jun 3 '15 at 6:07
NagrajNagraj
26112
asked Jun 3 '15 at 6:07
NagrajNagraj
26112
26112
add a comment |
add a comment |
5 Answers
5
active
oldest
votes
It would depend on what kind of stats you want, but if you're writing a program in C running on Linux, you'd definitely better know about Valgrind.
Valgrind can, not only profile detailed memory usage of your program, but also detect memory access violations which are common in C and possibly very hard to debug.
For your profiling purpose, take a look at docs about specific analysis tools, especially memcheck and massif.
answered Jun 3 '15 at 7:01
yaegashiyaegashi
8,35611734
add a comment |
If you are only interested in the memory used after the fact, then use GNU time:
command time -v myprogram
(the above uses the bash way of invoking the external time command rather than the bash builtin, your shell may vary).
Or, GNU memusage:
memusage -T ./myprogram
If you are interested in the memory used on an ongoing basis (i.e. during a long running process), one of the other answers is probably better.
See also this related question: Memory usage command with syntax similar to the time command
edited Apr 13 '17 at 12:37
Community♦
1
answered Jun 3 '15 at 9:13
mr.spuraticmr.spuratic
6,9411128
add a comment |
Here's the resident set size and virtual memory size of all sshd processes on one system:
ulric@qvp2:~$ ps -eo rss,vsz,args|grep sshd|grep -v grep
448 55292 /usr/sbin/sshd -D
5176 147460 sshd: ulric [priv]
2776 149704 sshd: ulric@pts/3
Or perhaps easier:
ulric@qvp2:~$ ps aux|head -n 1&&ps aux|grep sshd|grep -v grep
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 13221 0.0 0.0 55292 448 ? Ss Apr21 0:01 /usr/sbin/sshd -D
root 16046 0.0 0.5 147460 5176 ? Ss 08:12 0:00 sshd: ulric [priv]
ulric 16187 0.0 0.2 149704 2776 ? S 08:12 0:00 sshd: ulric@pts/3
See the ps manpage for more options.
answered Jun 3 '15 at 6:26
Ulric ErikssonUlric Eriksson
20416
add a comment |
how can i know the memory consumption of my c coding..?
answered 12 mins ago
kushalkushal
1
New contributor
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
The easiest to just catch the heap pointers through sbrk(0), cast them as 64-bit unsigned integers, and compute the difference after the memory gets allocated.
answered Apr 4 '17 at 15:13
Kakash1hatakeKakash1hatake
11
add a comment |
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5 Answers
5
active
oldest
votes
5 Answers
5
active
oldest
votes
active
oldest
votes
active
oldest
votes
It would depend on what kind of stats you want, but if you're writing a program in C running on Linux, you'd definitely better know about Valgrind.
Valgrind can, not only profile detailed memory usage of your program, but also detect memory access violations which are common in C and possibly very hard to debug.
For your profiling purpose, take a look at docs about specific analysis tools, especially memcheck and massif.
answered Jun 3 '15 at 7:01
yaegashiyaegashi
8,35611734
add a comment |
It would depend on what kind of stats you want, but if you're writing a program in C running on Linux, you'd definitely better know about Valgrind.
Valgrind can, not only profile detailed memory usage of your program, but also detect memory access violations which are common in C and possibly very hard to debug.
For your profiling purpose, take a look at docs about specific analysis tools, especially memcheck and massif.
answered Jun 3 '15 at 7:01
yaegashiyaegashi
8,35611734
add a comment |
It would depend on what kind of stats you want, but if you're writing a program in C running on Linux, you'd definitely better know about Valgrind.
Valgrind can, not only profile detailed memory usage of your program, but also detect memory access violations which are common in C and possibly very hard to debug.
For your profiling purpose, take a look at docs about specific analysis tools, especially memcheck and massif.
answered Jun 3 '15 at 7:01
yaegashiyaegashi
8,35611734
It would depend on what kind of stats you want, but if you're writing a program in C running on Linux, you'd definitely better know about Valgrind.
Valgrind can, not only profile detailed memory usage of your program, but also detect memory access violations which are common in C and possibly very hard to debug.
For your profiling purpose, take a look at docs about specific analysis tools, especially memcheck and massif.
answered Jun 3 '15 at 7:01
yaegashiyaegashi
8,35611734
answered Jun 3 '15 at 7:01
yaegashiyaegashi
8,35611734
answered Jun 3 '15 at 7:01
yaegashiyaegashi
8,35611734
answered Jun 3 '15 at 7:01
yaegashiyaegashi
8,35611734
8,35611734
add a comment |
add a comment |
If you are only interested in the memory used after the fact, then use GNU time:
command time -v myprogram
(the above uses the bash way of invoking the external time command rather than the bash builtin, your shell may vary).
Or, GNU memusage:
memusage -T ./myprogram
If you are interested in the memory used on an ongoing basis (i.e. during a long running process), one of the other answers is probably better.
See also this related question: Memory usage command with syntax similar to the time command
edited Apr 13 '17 at 12:37
Community♦
1
answered Jun 3 '15 at 9:13
mr.spuraticmr.spuratic
6,9411128
add a comment |
If you are only interested in the memory used after the fact, then use GNU time:
command time -v myprogram
(the above uses the bash way of invoking the external time command rather than the bash builtin, your shell may vary).
Or, GNU memusage:
memusage -T ./myprogram
If you are interested in the memory used on an ongoing basis (i.e. during a long running process), one of the other answers is probably better.
See also this related question: Memory usage command with syntax similar to the time command
edited Apr 13 '17 at 12:37
Community♦
1
answered Jun 3 '15 at 9:13
mr.spuraticmr.spuratic
6,9411128
add a comment |
If you are only interested in the memory used after the fact, then use GNU time:
command time -v myprogram
(the above uses the bash way of invoking the external time command rather than the bash builtin, your shell may vary).
Or, GNU memusage:
memusage -T ./myprogram
If you are interested in the memory used on an ongoing basis (i.e. during a long running process), one of the other answers is probably better.
See also this related question: Memory usage command with syntax similar to the time command
edited Apr 13 '17 at 12:37
Community♦
1
answered Jun 3 '15 at 9:13
mr.spuraticmr.spuratic
6,9411128
If you are only interested in the memory used after the fact, then use GNU time:
command time -v myprogram
(the above uses the bash way of invoking the external time command rather than the bash builtin, your shell may vary).
Or, GNU memusage:
memusage -T ./myprogram
If you are interested in the memory used on an ongoing basis (i.e. during a long running process), one of the other answers is probably better.
See also this related question: Memory usage command with syntax similar to the time command
edited Apr 13 '17 at 12:37
Community♦
1
answered Jun 3 '15 at 9:13
mr.spuraticmr.spuratic
6,9411128
edited Apr 13 '17 at 12:37
Community♦
1
edited Apr 13 '17 at 12:37
Community♦
1
edited Apr 13 '17 at 12:37
Community♦
1
1
answered Jun 3 '15 at 9:13
mr.spuraticmr.spuratic
6,9411128
answered Jun 3 '15 at 9:13
mr.spuraticmr.spuratic
6,9411128
answered Jun 3 '15 at 9:13
mr.spuraticmr.spuratic
6,9411128
6,9411128
add a comment |
add a comment |
Here's the resident set size and virtual memory size of all sshd processes on one system:
ulric@qvp2:~$ ps -eo rss,vsz,args|grep sshd|grep -v grep
448 55292 /usr/sbin/sshd -D
5176 147460 sshd: ulric [priv]
2776 149704 sshd: ulric@pts/3
Or perhaps easier:
ulric@qvp2:~$ ps aux|head -n 1&&ps aux|grep sshd|grep -v grep
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 13221 0.0 0.0 55292 448 ? Ss Apr21 0:01 /usr/sbin/sshd -D
root 16046 0.0 0.5 147460 5176 ? Ss 08:12 0:00 sshd: ulric [priv]
ulric 16187 0.0 0.2 149704 2776 ? S 08:12 0:00 sshd: ulric@pts/3
See the ps manpage for more options.
answered Jun 3 '15 at 6:26
Ulric ErikssonUlric Eriksson
20416
add a comment |
Here's the resident set size and virtual memory size of all sshd processes on one system:
ulric@qvp2:~$ ps -eo rss,vsz,args|grep sshd|grep -v grep
448 55292 /usr/sbin/sshd -D
5176 147460 sshd: ulric [priv]
2776 149704 sshd: ulric@pts/3
Or perhaps easier:
ulric@qvp2:~$ ps aux|head -n 1&&ps aux|grep sshd|grep -v grep
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 13221 0.0 0.0 55292 448 ? Ss Apr21 0:01 /usr/sbin/sshd -D
root 16046 0.0 0.5 147460 5176 ? Ss 08:12 0:00 sshd: ulric [priv]
ulric 16187 0.0 0.2 149704 2776 ? S 08:12 0:00 sshd: ulric@pts/3
See the ps manpage for more options.
answered Jun 3 '15 at 6:26
Ulric ErikssonUlric Eriksson
20416
add a comment |
Here's the resident set size and virtual memory size of all sshd processes on one system:
ulric@qvp2:~$ ps -eo rss,vsz,args|grep sshd|grep -v grep
448 55292 /usr/sbin/sshd -D
5176 147460 sshd: ulric [priv]
2776 149704 sshd: ulric@pts/3
Or perhaps easier:
ulric@qvp2:~$ ps aux|head -n 1&&ps aux|grep sshd|grep -v grep
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 13221 0.0 0.0 55292 448 ? Ss Apr21 0:01 /usr/sbin/sshd -D
root 16046 0.0 0.5 147460 5176 ? Ss 08:12 0:00 sshd: ulric [priv]
ulric 16187 0.0 0.2 149704 2776 ? S 08:12 0:00 sshd: ulric@pts/3
See the ps manpage for more options.
answered Jun 3 '15 at 6:26
Ulric ErikssonUlric Eriksson
20416
Here's the resident set size and virtual memory size of all sshd processes on one system:
ulric@qvp2:~$ ps -eo rss,vsz,args|grep sshd|grep -v grep
448 55292 /usr/sbin/sshd -D
5176 147460 sshd: ulric [priv]
2776 149704 sshd: ulric@pts/3
Or perhaps easier:
ulric@qvp2:~$ ps aux|head -n 1&&ps aux|grep sshd|grep -v grep
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 13221 0.0 0.0 55292 448 ? Ss Apr21 0:01 /usr/sbin/sshd -D
root 16046 0.0 0.5 147460 5176 ? Ss 08:12 0:00 sshd: ulric [priv]
ulric 16187 0.0 0.2 149704 2776 ? S 08:12 0:00 sshd: ulric@pts/3
See the ps manpage for more options.
answered Jun 3 '15 at 6:26
Ulric ErikssonUlric Eriksson
20416
answered Jun 3 '15 at 6:26
Ulric ErikssonUlric Eriksson
20416
answered Jun 3 '15 at 6:26
Ulric ErikssonUlric Eriksson
20416
answered Jun 3 '15 at 6:26
Ulric ErikssonUlric Eriksson
20416
20416
add a comment |
add a comment |
how can i know the memory consumption of my c coding..?
answered 12 mins ago
kushalkushal
1
New contributor
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
how can i know the memory consumption of my c coding..?
answered 12 mins ago
kushalkushal
1
New contributor
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
how can i know the memory consumption of my c coding..?
answered 12 mins ago
kushalkushal
1
New contributor
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
how can i know the memory consumption of my c coding..?
answered 12 mins ago
kushalkushal
1
New contributor
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 12 mins ago
kushalkushal
1
New contributor
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 12 mins ago
kushalkushal
1
answered 12 mins ago
kushalkushal
1
1
New contributor
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
kushal is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
The easiest to just catch the heap pointers through sbrk(0), cast them as 64-bit unsigned integers, and compute the difference after the memory gets allocated.
answered Apr 4 '17 at 15:13
Kakash1hatakeKakash1hatake
11
add a comment |
The easiest to just catch the heap pointers through sbrk(0), cast them as 64-bit unsigned integers, and compute the difference after the memory gets allocated.
answered Apr 4 '17 at 15:13
Kakash1hatakeKakash1hatake
11
add a comment |
The easiest to just catch the heap pointers through sbrk(0), cast them as 64-bit unsigned integers, and compute the difference after the memory gets allocated.
answered Apr 4 '17 at 15:13
Kakash1hatakeKakash1hatake
11
The easiest to just catch the heap pointers through sbrk(0), cast them as 64-bit unsigned integers, and compute the difference after the memory gets allocated.
answered Apr 4 '17 at 15:13
Kakash1hatakeKakash1hatake
11
answered Apr 4 '17 at 15:13
Kakash1hatakeKakash1hatake
11
answered Apr 4 '17 at 15:13
Kakash1hatakeKakash1hatake
11
answered Apr 4 '17 at 15:13
Kakash1hatakeKakash1hatake
11
11
add a comment |
add a comment |
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