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stats: don't query battery and temp as often when using acpi

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Querying battery (or temperature) using ACPI takes quite some
resources, which makes the battery discharge faster.  It doesn't make
much sense to have it queried as often either.  So, when using ACPI:

1) set battery query period to 10s minimum
2) set temperature query period to 5s minimum
This commit is contained in:
Sigrid 2021-01-22 10:15:36 +01:00
parent 1047b53efc
commit 6a78bb2e4f
1 changed files with 27 additions and 7 deletions
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24
sys/src/cmd/stats.c
View file

@ -220,6 +220,8 @@ double scale = 1.0;
int logscale = 0;
int ylabels = 0;
int sleeptime = 1000;
int batteryperiod = 1000;
int tempperiod = 1000;
char *procnames[NPROC] = {"main", "input"};
@ -625,6 +627,7 @@ initmach(Machine *m, char *name)
}
m->bitsybatfd = -1;
if(m->batteryfd >= 0){
batteryperiod = 10000;
if(loadbuf(m, &m->batteryfd) && readnums(m, nelem(m->batterystats), a, 0))
memmove(m->batterystats, a, sizeof(m->batterystats));
}else{
@ -636,6 +639,7 @@ initmach(Machine *m, char *name)
snprint(buf, sizeof buf, "%s/dev/cputemp", mpt);
m->tempfd = open(buf, OREAD);
if(m->tempfd < 0){
tempperiod = 5000;
snprint(buf, sizeof buf, "%s/mnt/acpi/cputemp", mpt);
m->tempfd = open(buf, OREAD);
}
@ -679,7 +683,14 @@ needether(int init)
int
needbattery(int init)
{
static uint step = 0;
if(++step*sleeptime >= batteryperiod){
step = 0;
return init | present[Mbattery];
}
return 0;
}
int
@ -691,7 +702,14 @@ needsignal(int init)
int
needtemp(int init)
{
static uint step = 0;
if(++step*sleeptime >= tempperiod){
step = 0;
return init | present[Mtemp];
}
return 0;
}
void
@ -737,10 +755,12 @@ readmach(Machine *m, int init)
if(needsignal(init) && loadbuf(m, &m->ifstatsfd) && strncmp(m->buf, "Signal: ", 8)==0 && readnums(m, nelem(m->netetherifstats), a, 1)){
memmove(m->netetherifstats, a, sizeof m->netetherifstats);
}
if(needbattery(init) && loadbuf(m, &m->batteryfd) && readnums(m, nelem(m->batterystats), a, 0))
if(needbattery(init)){
if(loadbuf(m, &m->batteryfd) && readnums(m, nelem(m->batterystats), a, 0))
memmove(m->batterystats, a, sizeof(m->batterystats));
if(needbattery(init) && loadbuf(m, &m->bitsybatfd) && readnums(m, 1, a, 0))
else if(loadbuf(m, &m->bitsybatfd) && readnums(m, 1, a, 0))
memmove(m->batterystats, a, sizeof(m->batterystats));
}
if(needtemp(init) && loadbuf(m, &m->tempfd))
for(n=0; n < nelem(m->temp) && readnums(m, 2, a, 0); n++)
m->temp[n] = a[0];