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#include "actorsystem.h"
#include "actor_bootstrapped.h"
#include "hfunc.h"
#include "process_stats.h"
#include <library/cpp/monlib/dynamic_counters/counters.h>
#include <library/cpp/monlib/metrics/metric_registry.h>
#include <util/datetime/uptime.h>
#include <util/system/defaults.h>
#include <util/stream/file.h>
#include <util/string/vector.h>
#include <util/string/split.h>
#ifndef _win_
#include <sys/user.h>
#include <sys/sysctl.h>
#endif
namespace NActors {
#ifdef _linux_
namespace {
template <typename TVal>
static bool ExtractVal(const TString& str, const TString& name, TVal& res) {
if (!str.StartsWith(name))
return false;
size_t pos = name.size();
while (pos < str.size() && (str[pos] == ' ' || str[pos] == '\t')) {
pos++;
}
res = atol(str.data() + pos);
return true;
}
float TicksPerMillisec() {
#ifdef _SC_CLK_TCK
return sysconf(_SC_CLK_TCK) / 1000.0;
#else
return 1.f;
#endif
}
}
bool TProcStat::Fill(pid_t pid) {
try {
TString strPid(ToString(pid));
TFileInput proc("/proc/" + strPid + "/status");
TString str;
while (proc.ReadLine(str)) {
if (ExtractVal(str, "VmRSS:", Rss))
continue;
if (ExtractVal(str, "voluntary_ctxt_switches:", VolCtxSwtch))
continue;
if (ExtractVal(str, "nonvoluntary_ctxt_switches:", NonvolCtxSwtch))
continue;
}
// Convert from kB to bytes
Rss *= 1024;
float tickPerMillisec = TicksPerMillisec();
TFileInput procStat("/proc/" + strPid + "/stat");
procStat.ReadLine(str);
if (!str.empty()) {
sscanf(str.data(),
"%d %*s %c %d %d %d %d %d %u %lu %lu "
"%lu %lu %lu %lu %ld %ld %ld %ld %ld "
"%ld %llu %lu %ld %lu",
&Pid, &State, &Ppid, &Pgrp, &Session, &TtyNr, &TPgid, &Flags, &MinFlt, &CMinFlt,
&MajFlt, &CMajFlt, &Utime, &Stime, &CUtime, &CStime, &Priority, &Nice, &NumThreads,
&ItRealValue, &StartTime, &Vsize, &RssPages, &RssLim);
Utime /= tickPerMillisec;
Stime /= tickPerMillisec;
CUtime /= tickPerMillisec;
CStime /= tickPerMillisec;
SystemUptime = ::Uptime();
Uptime = SystemUptime - TDuration::MilliSeconds(StartTime / TicksPerMillisec());
}
TFileInput statm("/proc/" + strPid + "/statm");
statm.ReadLine(str);
TVector<TString> fields;
StringSplitter(str).Split(' ').SkipEmpty().Collect(&fields);
if (fields.size() >= 7) {
ui64 resident = FromString<ui64>(fields[1]);
ui64 shared = FromString<ui64>(fields[2]);
if (PageSize == 0) {
PageSize = ObtainPageSize();
}
FileRss = shared * PageSize;
AnonRss = (resident - shared) * PageSize;
}
TFileInput cgroup("/proc/" + strPid + "/cgroup");
TString line;
TString memoryCGroup;
while (cgroup.ReadLine(line) > 0) {
StringSplitter(line).Split(':').Collect(&fields);
if (fields.size() > 2 && fields[1] == "memory") {
memoryCGroup = fields[2];
break;
}
}
if (!memoryCGroup.empty()) {
TFileInput limit("/sys/fs/cgroup/memory" + memoryCGroup + "/memory.limit_in_bytes");
if (limit.ReadLine(line) > 0) {
CGroupMemLim = FromString<ui64>(line);
if (CGroupMemLim > (1ULL << 40)) {
CGroupMemLim = 0;
}
}
}
} catch (...) {
return false;
}
return true;
}
long TProcStat::ObtainPageSize() {
long sz = sysconf(_SC_PAGESIZE);
return sz;
}
#else
bool TProcStat::Fill(pid_t pid) {
Y_UNUSED(pid);
return false;
}
long TProcStat::ObtainPageSize() {
return 0;
}
#endif
namespace {
// Periodically collects process stats and exposes them as mon counters
template <typename TDerived>
class TProcStatCollectingActor: public TActorBootstrapped<TProcStatCollectingActor<TDerived>> {
public:
static constexpr IActor::EActivityType ActorActivityType() {
return IActor::ACTORLIB_STATS;
}
TProcStatCollectingActor(TDuration interval)
: Interval(interval)
{
}
void Bootstrap(const TActorContext& ctx) {
ctx.Schedule(Interval, new TEvents::TEvWakeup());
Self()->Become(&TDerived::StateWork);
}
STFUNC(StateWork) {
switch (ev->GetTypeRewrite()) {
CFunc(TEvents::TSystem::Wakeup, Wakeup);
}
}
private:
void Wakeup(const TActorContext& ctx) {
Self()->UpdateCounters(ProcStat);
ctx.Schedule(Interval, new TEvents::TEvWakeup());
}
TDerived* Self() {
ProcStat.Fill(getpid());
return static_cast<TDerived*>(this);
}
private:
const TDuration Interval;
TProcStat ProcStat;
};
// Periodically collects process stats and exposes them as mon counters
class TDynamicCounterCollector: public TProcStatCollectingActor<TDynamicCounterCollector> {
using TBase = TProcStatCollectingActor<TDynamicCounterCollector>;
public:
TDynamicCounterCollector(
ui32 intervalSeconds,
NMonitoring::TDynamicCounterPtr counters)
: TBase{TDuration::Seconds(intervalSeconds)}
{
ProcStatGroup = counters->GetSubgroup("counters", "utils");
VmSize = ProcStatGroup->GetCounter("Process/VmSize", false);
AnonRssSize = ProcStatGroup->GetCounter("Process/AnonRssSize", false);
FileRssSize = ProcStatGroup->GetCounter("Process/FileRssSize", false);
CGroupMemLimit = ProcStatGroup->GetCounter("Process/CGroupMemLimit", false);
UserTime = ProcStatGroup->GetCounter("Process/UserTime", true);
SysTime = ProcStatGroup->GetCounter("Process/SystemTime", true);
MinorPageFaults = ProcStatGroup->GetCounter("Process/MinorPageFaults", true);
MajorPageFaults = ProcStatGroup->GetCounter("Process/MajorPageFaults", true);
UptimeSeconds = ProcStatGroup->GetCounter("Process/UptimeSeconds", false);
NumThreads = ProcStatGroup->GetCounter("Process/NumThreads", false);
SystemUptimeSeconds = ProcStatGroup->GetCounter("System/UptimeSeconds", false);
}
void UpdateCounters(const TProcStat& procStat) {
*VmSize = procStat.Vsize;
*AnonRssSize = procStat.AnonRss;
*FileRssSize = procStat.FileRss;
if (procStat.CGroupMemLim) {
*CGroupMemLimit = procStat.CGroupMemLim;
}
*UserTime = procStat.Utime;
*SysTime = procStat.Stime;
*MinorPageFaults = procStat.MinFlt;
*MajorPageFaults = procStat.MajFlt;
*UptimeSeconds = procStat.Uptime.Seconds();
*NumThreads = procStat.NumThreads;
*SystemUptimeSeconds = procStat.Uptime.Seconds();
}
private:
NMonitoring::TDynamicCounterPtr ProcStatGroup;
NMonitoring::TDynamicCounters::TCounterPtr VmSize;
NMonitoring::TDynamicCounters::TCounterPtr AnonRssSize;
NMonitoring::TDynamicCounters::TCounterPtr FileRssSize;
NMonitoring::TDynamicCounters::TCounterPtr CGroupMemLimit;
NMonitoring::TDynamicCounters::TCounterPtr UserTime;
NMonitoring::TDynamicCounters::TCounterPtr SysTime;
NMonitoring::TDynamicCounters::TCounterPtr MinorPageFaults;
NMonitoring::TDynamicCounters::TCounterPtr MajorPageFaults;
NMonitoring::TDynamicCounters::TCounterPtr UptimeSeconds;
NMonitoring::TDynamicCounters::TCounterPtr NumThreads;
NMonitoring::TDynamicCounters::TCounterPtr SystemUptimeSeconds;
};
class TRegistryCollector: public TProcStatCollectingActor<TRegistryCollector> {
using TBase = TProcStatCollectingActor<TRegistryCollector>;
public:
TRegistryCollector(TDuration interval, NMonitoring::TMetricRegistry& registry)
: TBase{interval}
{
VmSize = registry.IntGauge({{"sensor", "process.VmSize"}});
AnonRssSize = registry.IntGauge({{"sensor", "process.AnonRssSize"}});
FileRssSize = registry.IntGauge({{"sensor", "process.FileRssSize"}});
CGroupMemLimit = registry.IntGauge({{"sensor", "process.CGroupMemLimit"}});
UptimeSeconds = registry.IntGauge({{"sensor", "process.UptimeSeconds"}});
NumThreads = registry.IntGauge({{"sensor", "process.NumThreads"}});
SystemUptimeSeconds = registry.IntGauge({{"sensor", "system.UptimeSeconds"}});
UserTime = registry.Rate({{"sensor", "process.UserTime"}});
SysTime = registry.Rate({{"sensor", "process.SystemTime"}});
MinorPageFaults = registry.Rate({{"sensor", "process.MinorPageFaults"}});
MajorPageFaults = registry.Rate({{"sensor", "process.MajorPageFaults"}});
}
void UpdateCounters(const TProcStat& procStat) {
VmSize->Set(procStat.Vsize);
AnonRssSize->Set(procStat.AnonRss);
FileRssSize->Set(procStat.FileRss);
CGroupMemLimit->Set(procStat.CGroupMemLim);
UptimeSeconds->Set(procStat.Uptime.Seconds());
NumThreads->Set(procStat.NumThreads);
SystemUptimeSeconds->Set(procStat.SystemUptime.Seconds());
// it is ok here to reset and add metric value, because mutation
// is performed in siglethreaded context
UserTime->Reset();
UserTime->Add(procStat.Utime);
SysTime->Reset();
SysTime->Add(procStat.Stime);
MinorPageFaults->Reset();
MinorPageFaults->Add(procStat.MinFlt);
MajorPageFaults->Reset();
MajorPageFaults->Add(procStat.MajFlt);
}
private:
NMonitoring::TIntGauge* VmSize;
NMonitoring::TIntGauge* AnonRssSize;
NMonitoring::TIntGauge* FileRssSize;
NMonitoring::TIntGauge* CGroupMemLimit;
NMonitoring::TRate* UserTime;
NMonitoring::TRate* SysTime;
NMonitoring::TRate* MinorPageFaults;
NMonitoring::TRate* MajorPageFaults;
NMonitoring::TIntGauge* UptimeSeconds;
NMonitoring::TIntGauge* NumThreads;
NMonitoring::TIntGauge* SystemUptimeSeconds;
};
} // namespace
IActor* CreateProcStatCollector(ui32 intervalSec, NMonitoring::TDynamicCounterPtr counters) {
return new TDynamicCounterCollector(intervalSec, counters);
}
IActor* CreateProcStatCollector(TDuration interval, NMonitoring::TMetricRegistry& registry) {
return new TRegistryCollector(interval, registry);
}
}
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