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Fix stats reset

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make SIGUSR2 dump and reset stats
Make resetting time work

base/statistics.cc:
    Fix statistics reset so that it works again, and correctly
    reset bins as well.  (The old code wouldn't reset if you didn't
    have any bins, and then would actually only reset the first
    bin)
cpu/simple_cpu/simple_cpu.cc:
cpu/simple_cpu/simple_cpu.hh:
    convert idleCycles/idleFraction into a single Average stat
    to make reset work more simply
sim/main.cc:
    handle SIGUSR2 to dump and reset stats
    (SIGUSR1 only dumps them)
sim/sim_time.cc:
sim/sim_time.hh:
    Add support for resetting the time

--HG--
extra : convert_revision : ea43e03c50c0a4bb826dc0842a8c4fa1a9289e0a
This commit is contained in:
Nathan Binkert 2003-11-05 17:57:41 -05:00
parent 74fd8b1ad1
commit 9471a4d20f
6 changed files with 58 additions and 31 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
base/statistics.cc
View file

@ -265,16 +265,24 @@ Database::check()
void
Database::reset()
{
list<GenBin *>::iterator bi = bins.begin();
list<GenBin *>::iterator be = bins.end();
list_t::iterator i = allStats.begin();
list_t::iterator end = allStats.end();
while (bi != be) {
(*bi)->activate();
while (i != end) {
(*i)->reset();
Stat *stat = *i;
stat->reset();
++i;
}
list<GenBin *>::iterator bi = bins.begin();
list<GenBin *>::iterator be = bins.end();
while (bi != be) {
GenBin *bin = *bi;
bin->activate();
i = allStats.begin();
while (i != end) {
Stat *stat = *i;
stat->reset();
++i;
}
++bi;
@ -736,7 +744,7 @@ VectorDisplay(std::ostream &stream,
_pdf = vec[i] / _total;
_cdf += _pdf;
} else {
_pdf = _cdf = 0.0;
_pdf = _cdf = NAN;
}
if (!(myflags & cdf)) {
PrintOne(stream, vec[i], subname, subdesc, myprecision,
@ -768,10 +776,8 @@ VectorDisplay(std::ostream &stream,
_pdf = vec[i] / _total;
_cdf += _pdf;
} else {
_pdf = _cdf = 0.0;
_pdf = _cdf = NAN;
}
_pdf = vec[i] / _total;
_cdf += _pdf;
PrintOne(stream, vec[i], name, mydesc, myprecision,
myflags, _pdf, _cdf);
}

9
cpu/simple_cpu/simple_cpu.cc
View file

@ -160,7 +160,6 @@ SimpleCPU::SimpleCPU(const string &_name, Process *_process,
numInst = 0;
numLoad = 0;
last_idle = 0;
lastIcacheStall = 0;
lastDcacheStall = 0;
@ -171,7 +170,6 @@ SimpleCPU::~SimpleCPU()
{
}
void
SimpleCPU::switchOut()
{
@ -229,11 +227,6 @@ SimpleCPU::regStats()
.desc("Number of memory references")
;
idleCycles
.name(name() + ".idle_cycles")
.desc("Number of idle cycles")
;
idleFraction
.name(name() + ".idle_fraction")
.desc("Percentage of idle cycles")
@ -251,8 +244,6 @@ SimpleCPU::regStats()
.prereq(dcacheStallCycles)
;
idleFraction = idleCycles / simTicks;
numInsts = Statistics::scalar(numInst);
simInsts += numInsts;
}

8
cpu/simple_cpu/simple_cpu.hh
View file

@ -207,7 +207,7 @@ class SimpleCPU : public BaseCPU
case Idle:
assert(old_status == Running);
last_idle = curTick;
idleFraction++;
if (tickEvent.scheduled())
tickEvent.squash();
break;
@ -217,7 +217,7 @@ class SimpleCPU : public BaseCPU
old_status == DcacheMissStall ||
old_status == IcacheMissComplete);
if (old_status == Idle && curTick != 0)
idleCycles += curTick - last_idle;
idleFraction--;
if (tickEvent.squashed())
tickEvent.reschedule(curTick + 1);
@ -244,9 +244,7 @@ class SimpleCPU : public BaseCPU
Counter numLoad;
// number of idle cycles
Statistics::Scalar<> idleCycles;
Statistics::Formula idleFraction;
Counter last_idle;
Statistics::Average<> idleFraction;
// number of cycles stalled for I-cache misses
Statistics::Scalar<> icacheStallCycles;

16
sim/main.cc
View file

@ -59,6 +59,7 @@ using namespace std;
// See async.h.
volatile bool async_event = false;
volatile bool async_dump = false;
volatile bool async_dumpreset = false;
volatile bool async_exit = false;
volatile bool async_io = false;
volatile bool async_alarm = false;
@ -71,6 +72,13 @@ dumpStatsHandler(int sigtype)
async_dump = true;
}
void
dumprstStatsHandler(int sigtype)
{
async_event = true;
async_dumpreset = true;
}
/// Exit signal handler.
void
exitNowHandler(int sigtype)
@ -220,6 +228,7 @@ main(int argc, char **argv)
signal(SIGPIPE, SIG_IGN);
signal(SIGTRAP, SIG_IGN);
signal(SIGUSR1, dumpStatsHandler); // dump intermediate stats
signal(SIGUSR2, dumprstStatsHandler); // dump and reset stats
signal(SIGINT, exitNowHandler); // dump final stats and exit
sayHello(cerr);
@ -405,6 +414,13 @@ main(int argc, char **argv)
SetupEvent(Dump, curTick);
}
if (async_dumpreset) {
async_dumpreset = false;
using namespace Statistics;
SetupEvent(Dump | Reset, curTick);
}
if (async_exit) {
async_exit = false;
new SimExitEvent("User requested STOP");

14
sim/sim_time.cc
View file

@ -65,6 +65,12 @@ namespace Time
return start->tv;
}
void
Start::reset()
{
::gettimeofday(&start->tv, NULL);
}
double
Start::operator()() const
{
@ -115,10 +121,16 @@ namespace Time
if (!elapsed)
elapsed = new _timeval;
timersub(&now.get(), &start.get(), &elapsed->tv);
timersub(&_now.get(), &_start.get(), &elapsed->tv);
return elapsed->tv;
}
void
Elapsed::reset()
{
_start.reset();
}
double
Elapsed::operator()() const
{

4
sim/sim_time.hh
View file

@ -45,6 +45,7 @@ namespace Time {
~Start();
const timeval &get() const;
void reset();
double operator()() const;
};
@ -65,12 +66,15 @@ namespace Time {
{
private:
mutable _timeval *elapsed;
Start _start;
Now _now;
public:
Elapsed();
~Elapsed();
const timeval &get() const;
void reset();
double operator()() const;
};