diff options
| -rw-r--r-- | Makefile | 3 | ||||
| -rw-r--r-- | README.md | 59 | ||||
| -rw-r--r-- | profile.c | 24 |
3 files changed, 60 insertions, 26 deletions
@@ -1,5 +1,6 @@ CC=clang -CFLAGS=-Wall -Wextra -O0 -g +# Enable _ALLOW_UNMANTAINED for non Linux systems +CFLAGS=-Wall -Wextra -O0 -g # -D_ALLOW_UNMANTAINED EXE=profile SOURCES=profile.c @@ -4,31 +4,48 @@ Profile a single program giving stats for CPU, memory and other things (see man 2 getrusage). The standard input is closed for the child process, so programs like `cat` or `xargs` can't be profiled (for now). -## Example +The following list is the data that this software can tell you (on Linux +systems). The second list is all the features that are unmaintained for linux, +maybe on other systems it could be useful. + +* user CPU time used +* system CPU time used +* maximum resident set size +* page reclaims (soft page faults) +* page faults (hard page faults) +* block input operations +* block output operations +* voluntary context switches +* involuntary context switches + +### Unmaintained fields - > ./profile echo hello world - user CPU time used: 0 3333 - system CPU time used: 0 0 - residet set size used: 2336 +* integral shared memory size +* integral unshared data size +* integral unshared stack size +* swaps +* IPC messages sent +* IPC messages received +* signals received ## TODO -* [x] user CPU time used -* [x] system CPU time used -* [x] maximum resident set size -* [ ] integral shared memory size -* [ ] integral unshared data size -* [ ] integral unshared stack size -* [ ] page reclaims (soft page faults) -* [ ] page faults (hard page faults) -* [ ] swaps -* [ ] block input operations -* [ ] block output operations -* [ ] IPC messages sent -* [ ] IPC messages received -* [ ] signals received -* [ ] voluntary context switches -* [ ] involuntary context switches +* Express the CPU time on CPU cycles. +* Check if there are another function/library that could tell us more info about + a child process. + +## Example + + > ./profile thunar + user CPU time used: 0s 206666us + system CPU time used: 0s 49999us + residet set size used: 35864 + page reclaims (soft page faults): 3979 + page faults (hard page faults): 0 + block input operations: 0 + block output operations: 16 + voluntary context switches: 343 + involuntary context switches: 26 ## Copyright @@ -120,7 +120,7 @@ int main(int argc, char **argv) O_WRONLY | O_CREAT, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH); } - process_child(prog_name, args, fd_out); + spawn_child(prog_name, args, fd_out); } else { @@ -131,9 +131,25 @@ int main(int argc, char **argv) getrusage(who, &usage); - printf("user CPU time used:\t%lu %lu\n", usage.ru_utime.tv_sec, usage.ru_utime.tv_usec); - printf("system CPU time used:\t%lu %lu\n", usage.ru_stime.tv_sec, usage.ru_stime.tv_usec); - printf("residet set size used: %ld\n", usage.ru_maxrss); + printf("user CPU time used: %lus %luus\n", usage.ru_utime.tv_sec, usage.ru_utime.tv_usec); + printf("system CPU time used: %lus %luus\n", usage.ru_stime.tv_sec, usage.ru_stime.tv_usec); + printf("residet set size used: %ld\n", usage.ru_maxrss); + printf("page reclaims (soft page faults): %ld\n", usage.ru_minflt); + printf("page faults (hard page faults): %ld\n", usage.ru_majflt); + printf("block input operations: %ld\n", usage.ru_inblock); + printf("block output operations: %ld\n", usage.ru_oublock); + printf("voluntary context switches: %ld\n", usage.ru_nvcsw); + printf("involuntary context switches: %ld\n", usage.ru_nivcsw); + +#ifdef _ALLOW_UNMANTAINED + printf("integral shared memory size: %ld\n", usage.ru_ixrss); + printf("integral unshared data size: %ld\n", usage.ru_idrss); + printf("integral unshared stack size: %ld\n", usage.ru_isrss); + printf("swaps: %ld\n", usage.ru_nswap); + printf("IPC messages sent: %ld\n", usage.ru_msgsnd); + printf("IPC messages received: %ld\n", usage.ru_msgrcv); + printf("signals received: %ld\n", usage.ru_nsignals); +#endif } return status; |