top - able to account kernel cpu time to process
This commit is contained in:
Ben Gras
parent
ab73ac3b6f
commit
dce5e09683
1 changed files with 85 additions and 19 deletions
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@ -20,6 +20,7 @@
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#include <fcntl.h>
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#include <errno.h>
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#include <dirent.h>
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#include <assert.h>
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#include <sys/ioc_tty.h>
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#include <sys/times.h>
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@ -36,8 +37,17 @@
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#include <paths.h>
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#include <minix/procfs.h>
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#define TIMECYCLEKEY 't'
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u32_t system_hz;
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/* name of cpu cycle types, in the order they appear in /psinfo. */
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char *cputimenames[] = { "user", "ipc", "kernelcall" };
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#define CPUTIMENAMES (sizeof(cputimenames)/sizeof(cputimenames[0]))
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#define CPUTIME(m, i) (m & (1L << (i)))
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unsigned int nr_procs, nr_tasks;
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int nr_total;
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@ -59,7 +69,7 @@ struct proc {
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int p_flags;
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endpoint_t p_endpoint;
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pid_t p_pid;
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u64_t p_cycles;
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u64_t p_cpucycles[CPUTIMENAMES];
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int p_priority;
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endpoint_t p_blocked;
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time_t p_user_time;
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@ -78,6 +88,7 @@ void parse_file(pid_t pid)
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unsigned long cycles_hi, cycles_lo;
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FILE *fp;
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struct proc *p;
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int i;
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sprintf(path, "%d/psinfo", pid);
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@ -122,12 +133,13 @@ void parse_file(pid_t pid)
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if (state != STATE_RUN)
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p->p_flags |= BLOCKED;
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p->p_cycles = make64(cycles_lo, cycles_hi);
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p->p_cpucycles[0] = make64(cycles_lo, cycles_hi);
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p->p_memory = 0L;
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if (!(p->p_flags & IS_TASK)) {
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if (fscanf(fp, " %lu %*u %*u %*c %*d %*u %u %*u %d",
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&p->p_memory, &effuid, &p->p_nice) != 3) {
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int i;
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if ((i=fscanf(fp, " %lu %*u %*u %*c %*d %*u %u %*u %d %*c %*d %*u",
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&p->p_memory, &effuid, &p->p_nice)) != 3) {
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fclose(fp);
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return;
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@ -136,6 +148,15 @@ void parse_file(pid_t pid)
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p->p_effuid = effuid;
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}
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for(i = 1; i < CPUTIMENAMES; i++) {
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if(fscanf(fp, " %lu %lu",
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&cycles_hi, &cycles_lo) == 2) {
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p->p_cpucycles[i] = make64(cycles_lo, cycles_hi);
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} else {
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p->p_cpucycles[i] = make64(0, 0);
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}
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}
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p->p_flags |= USED;
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fclose(fp);
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@ -302,6 +323,8 @@ struct tp *lookup(endpoint_t who, struct tp *tptab, int np)
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*/
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#define SCALE (1 << 12)
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double ktotal = 0;
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void print_proc(struct tp *tp, u32_t tcyc)
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{
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int euid = 0;
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@ -339,8 +362,45 @@ void print_proc(struct tp *tp, u32_t tcyc)
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printf("%6.2f%% %s", 100.0*pcyc/tcyc, name);
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}
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char *cputimemodename(int cputimemode)
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{
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static char name[100];
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int i;
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name[0] = '\0';
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for(i = 0; i < CPUTIMENAMES; i++) {
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if(CPUTIME(cputimemode, i)) {
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assert(strlen(name) +
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strlen(cputimenames[i]) < sizeof(name));
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strcat(name, cputimenames[i]);
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strcat(name, " ");
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}
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}
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return name;
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}
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u64_t cputicks(struct proc *p1, struct proc *p2, int timemode)
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{
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int i;
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u64_t t = make64(0, 0);
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for(i = 0; i < CPUTIMENAMES; i++) {
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if(!CPUTIME(timemode, i))
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continue;
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if(p1->p_endpoint == p2->p_endpoint) {
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t = add64(t, sub64(p2->p_cpucycles[i],
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p1->p_cpucycles[i]));
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} else {
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t = add64(t, p2->p_cpucycles[i]);
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}
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}
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return t;
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}
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void print_procs(int maxlines,
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struct proc *proc1, struct proc *proc2)
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struct proc *proc1, struct proc *proc2, int cputimemode)
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{
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int p, nprocs;
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u64_t idleticks = cvu64(0);
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@ -363,24 +423,19 @@ void print_procs(int maxlines,
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}
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for(p = nprocs = 0; p < nr_total; p++) {
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u64_t uticks;
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if(!(proc2[p].p_flags & USED))
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continue;
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tick_procs[nprocs].p = proc2 + p;
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if(proc1[p].p_endpoint == proc2[p].p_endpoint) {
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tick_procs[nprocs].ticks =
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sub64(proc2[p].p_cycles, proc1[p].p_cycles);
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} else {
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tick_procs[nprocs].ticks =
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proc2[p].p_cycles;
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}
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total_ticks = add64(total_ticks, tick_procs[nprocs].ticks);
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tick_procs[nprocs].ticks = cputicks(&proc1[p], &proc2[p], cputimemode);
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uticks = cputicks(&proc1[p], &proc2[p], 1);
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total_ticks = add64(total_ticks, uticks);
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if(p-NR_TASKS == IDLE) {
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idleticks = tick_procs[nprocs].ticks;
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idleticks = uticks;
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continue;
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}
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if(p-NR_TASKS == KERNEL) {
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kernelticks = tick_procs[nprocs].ticks;
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kernelticks = uticks;
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continue;
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}
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if(!(proc2[p].p_flags & IS_TASK)) {
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@ -416,6 +471,11 @@ void print_procs(int maxlines,
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#define NEWLINE do { printf("\n"); if(--maxlines <= 0) { return; } } while(0)
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NEWLINE;
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printf("CPU time displayed (press '%c' to cycle): %s",
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TIMECYCLEKEY, cputimemodename(cputimemode));
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NEWLINE;
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NEWLINE;
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printf(" PID USERNAME PRI NICE SIZE STATE TIME CPU COMMAND");
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@ -471,7 +531,7 @@ void print_procs(int maxlines,
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}
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}
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void showtop(int r)
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void showtop(int cputimemode, int r)
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{
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#define NLOADS 3
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double loads[NLOADS];
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@ -502,7 +562,7 @@ void showtop(int r)
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if(winsize.ws_row > 0) r = winsize.ws_row;
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print_procs(r - lines - 2, prev_proc, proc);
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print_procs(r - lines - 2, prev_proc, proc, cputimemode);
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}
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void init(int *rows)
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@ -561,6 +621,7 @@ void getkinfo(void)
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int main(int argc, char *argv[])
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{
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int r, c, s = 0;
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int cputimemode = 1; /* bitmap. */
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if (chdir(_PATH_PROC) != 0) {
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perror("chdir to " _PATH_PROC);
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@ -601,7 +662,7 @@ int main(int argc, char *argv[])
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fd_set fds;
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int ns;
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struct timeval tv;
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showtop(r);
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showtop(cputimemode, r);
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tv.tv_sec = s;
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tv.tv_usec = 0;
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@ -621,6 +682,11 @@ int main(int argc, char *argv[])
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putchar('\r');
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return 0;
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break;
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case TIMECYCLEKEY:
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cputimemode++;
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if(cputimemode >= (1L << CPUTIMENAMES))
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cputimemode = 1;
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break;
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}
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}
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}
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