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Reduce hardware sampling perdiod. Don't sample time.

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Bartosz Taudul 2021-05-19 23:21:21 +02:00
parent 28cc72a69c
commit 2e38e70049
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GPG Key ID: B7FE2008B7575DF3
2 changed files with 4 additions and 17 deletions
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20
client/TracySysTrace.cpp
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@ -731,16 +731,12 @@ static void SetupSampling( int64_t& samplingPeriod )
pe.type = PERF_TYPE_HARDWARE; pe.type = PERF_TYPE_HARDWARE;
pe.size = sizeof( perf_event_attr ); pe.size = sizeof( perf_event_attr );
pe.config = PERF_COUNT_HW_CPU_CYCLES; pe.config = PERF_COUNT_HW_CPU_CYCLES;
pe.sample_freq = 25*1000*1000; pe.sample_freq = 500*1000;
pe.sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID | PERF_SAMPLE_TIME; pe.sample_type = PERF_SAMPLE_IP | PERF_SAMPLE_TID;
pe.disabled = 1; pe.disabled = 1;
pe.exclude_kernel = 1; pe.exclude_kernel = 1;
pe.exclude_idle = 1; pe.exclude_idle = 1;
pe.precise_ip = 2; pe.precise_ip = 2;
#if !defined TRACY_HW_TIMER || !( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
pe.use_clockid = 1;
pe.clockid = CLOCK_MONOTONIC_RAW;
#endif
for( int i=0; i<s_numCpus; i++ ) for( int i=0; i<s_numCpus; i++ )
{ {
@ -776,7 +772,7 @@ static void SetupSampling( int64_t& samplingPeriod )
#if defined TRACY_HW_TIMER && ( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 ) #if defined TRACY_HW_TIMER && ( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
for( int i=0; i<s_numBuffers; i++ ) for( int i=0; i<s_numBuffers; i++ )
{ {
if( !s_ring[i].CheckTscCaps() ) if( s_ring[i].GetId() == EventCallstack && !s_ring[i].CheckTscCaps() )
{ {
for( int j=0; j<s_numBuffers; j++ ) s_ring[j].~RingBuffer<RingBufSize>(); for( int j=0; j<s_numBuffers; j++ ) s_ring[j].~RingBuffer<RingBufSize>();
tracy_free( s_ring ); tracy_free( s_ring );
@ -887,22 +883,15 @@ static void SetupSampling( int64_t& samplingPeriod )
// Layout: // Layout:
// u64 ip // u64 ip
// u32 pid, tid // u32 pid, tid
// u64 time
uint32_t pid; uint32_t pid;
s_ring[i].Read( &pid, offset + sizeof( uint64_t ), sizeof( uint32_t ) ); s_ring[i].Read( &pid, offset + sizeof( uint64_t ), sizeof( uint32_t ) );
if( pid == currentPid ) if( pid == currentPid )
{ {
uint64_t ip, t0; uint64_t ip;
uint32_t tid; uint32_t tid;
s_ring[i].Read( &ip, offset, sizeof( uint64_t ) ); s_ring[i].Read( &ip, offset, sizeof( uint64_t ) );
offset += sizeof( uint64_t ) + sizeof( uint32_t ) + sizeof( uint32_t );
s_ring[i].Read( &t0, offset, sizeof( uint64_t ) );
#if defined TRACY_HW_TIMER && ( defined __i386 || defined _M_IX86 || defined __x86_64__ || defined _M_X64 )
t0 = s_ring[i].ConvertTimeToTsc( t0 );
#endif
QueueType type; QueueType type;
switch( id ) switch( id )
@ -920,7 +909,6 @@ static void SetupSampling( int64_t& samplingPeriod )
TracyLfqPrepare( type ); TracyLfqPrepare( type );
MemWrite( &item->hwSample.ip, ip ); MemWrite( &item->hwSample.ip, ip );
MemWrite( &item->hwSample.time, t0 );
TracyLfqCommit; TracyLfqCommit;
} }
} }

1
common/TracyQueue.hpp
View File

@ -477,7 +477,6 @@ struct QueueTidToPid
struct QueueHwSample struct QueueHwSample
{ {
int64_t time;
uint64_t ip; uint64_t ip;
}; };