ee73d240ab
Track min/max/avg access density (accesses per byte and accesses per byte per lifetime second) metrics directly during profiling. This allows more accurate use of these metrics in profile analysis and use, instead of trying to compute them from already aggregated data in the profile. This required regenerating some of the raw profile and executable inputs for a few tests. While here, make the llvm-profdata memprof tests more resilient to differences in things like memory mapping, timestamps and cpu ids to make future test updates easier. Differential Revision: https://reviews.llvm.org/D141558
127 lines
4.3 KiB
Plaintext
127 lines
4.3 KiB
Plaintext
REQUIRES: x86_64-linux
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The input raw profile test has been generated from the following source code:
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```
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#include <stdlib.h>
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#include <string.h>
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int main(int argc, char **argv) {
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char *x = (char *)malloc(10);
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memset(x, 0, 10);
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free(x);
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x = (char *)malloc(10);
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memset(x, 0, 10);
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free(x);
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return 0;
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}
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```
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The following commands were used to compile the source to a memprof instrumented
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executable and collect a raw binary format profile. Since the profile contains
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virtual addresses for the callstack, we do not expect the raw binary profile to
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be deterministic. The summary should be deterministic apart from changes to
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the shared libraries linked in which could change the number of segments
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recorded.
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```
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clang -fuse-ld=lld -Wl,--no-rosegment -gmlt -fdebug-info-for-profiling \
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-fmemory-profile -mno-omit-leaf-frame-pointer -fno-omit-frame-pointer \
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-fno-optimize-sibling-calls -m64 -Wl,-build-id -no-pie \
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source.c -o basic.memprofexe
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env MEMPROF_OPTIONS=log_path=stdout ./basic.memprofexe > basic.memprofraw
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```
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RUN: llvm-profdata show --memory %p/Inputs/basic.memprofraw --profiled-binary %p/Inputs/basic.memprofexe -o - | FileCheck %s
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We expect 2 MIB entries, 1 each for the malloc calls in the program. Any
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additional allocations which do not originate from the main binary are pruned.
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CHECK: MemprofProfile:
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CHECK-NEXT: Summary:
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CHECK-NEXT: Version: 2
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CHECK-NEXT: NumSegments: {{[0-9]+}}
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CHECK-NEXT: NumMibInfo: 2
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CHECK-NEXT: NumAllocFunctions: 1
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CHECK-NEXT: NumStackOffsets: 2
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CHECK-NEXT: Segments:
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CHECK-NEXT: -
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CHECK-NEXT: BuildId: <None>
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CHECK-NEXT: Start: 0x{{[0-9]+}}
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CHECK-NEXT: End: 0x{{[0-9]+}}
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CHECK-NEXT: Offset: 0x{{[0-9]+}}
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CHECK-NEXT: -
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CHECK: Records:
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CHECK-NEXT: -
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CHECK-NEXT: FunctionGUID: {{[0-9]+}}
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CHECK-NEXT: AllocSites:
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CHECK-NEXT: -
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CHECK-NEXT: Callstack:
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CHECK-NEXT: -
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CHECK-NEXT: Function: {{[0-9]+}}
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CHECK-NEXT: SymbolName: main
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CHECK-NEXT: LineOffset: 1
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CHECK-NEXT: Column: 21
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CHECK-NEXT: Inline: 0
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CHECK-NEXT: MemInfoBlock:
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CHECK-NEXT: AllocCount: 1
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CHECK-NEXT: TotalAccessCount: 2
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CHECK-NEXT: MinAccessCount: 2
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CHECK-NEXT: MaxAccessCount: 2
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CHECK-NEXT: TotalSize: 10
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CHECK-NEXT: MinSize: 10
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CHECK-NEXT: MaxSize: 10
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CHECK-NEXT: AllocTimestamp: {{[0-9]+}}
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CHECK-NEXT: DeallocTimestamp: {{[0-9]+}}
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CHECK-NEXT: TotalLifetime: 0
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CHECK-NEXT: MinLifetime: 0
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CHECK-NEXT: MaxLifetime: 0
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CHECK-NEXT: AllocCpuId: {{[0-9]+}}
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CHECK-NEXT: DeallocCpuId: {{[0-9]+}}
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CHECK-NEXT: NumMigratedCpu: 0
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CHECK-NEXT: NumLifetimeOverlaps: 0
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CHECK-NEXT: NumSameAllocCpu: 0
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CHECK-NEXT: NumSameDeallocCpu: 0
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CHECK-NEXT: DataTypeId: {{[0-9]+}}
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CHECK-NEXT: TotalAccessDensity: 20
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CHECK-NEXT: MinAccessDensity: 20
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CHECK-NEXT: MaxAccessDensity: 20
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CHECK-NEXT: TotalLifetimeAccessDensity: 20000
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CHECK-NEXT: MinLifetimeAccessDensity: 20000
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CHECK-NEXT: MaxLifetimeAccessDensity: 20000
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CHECK-NEXT: -
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CHECK-NEXT: Callstack:
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CHECK-NEXT: -
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CHECK-NEXT: Function: {{[0-9]+}}
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CHECK-NEXT: SymbolName: main
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CHECK-NEXT: LineOffset: 4
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CHECK-NEXT: Column: 15
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CHECK-NEXT: Inline: 0
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CHECK-NEXT: MemInfoBlock:
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CHECK-NEXT: AllocCount: 1
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CHECK-NEXT: TotalAccessCount: 2
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CHECK-NEXT: MinAccessCount: 2
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CHECK-NEXT: MaxAccessCount: 2
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CHECK-NEXT: TotalSize: 10
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CHECK-NEXT: MinSize: 10
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CHECK-NEXT: MaxSize: 10
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CHECK-NEXT: AllocTimestamp: {{[0-9]+}}
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CHECK-NEXT: DeallocTimestamp: {{[0-9]+}}
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CHECK-NEXT: TotalLifetime: 0
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CHECK-NEXT: MinLifetime: 0
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CHECK-NEXT: MaxLifetime: 0
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CHECK-NEXT: AllocCpuId: {{[0-9]+}}
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CHECK-NEXT: DeallocCpuId: {{[0-9]+}}
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CHECK-NEXT: NumMigratedCpu: 0
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CHECK-NEXT: NumLifetimeOverlaps: 0
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CHECK-NEXT: NumSameAllocCpu: 0
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CHECK-NEXT: NumSameDeallocCpu: 0
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CHECK-NEXT: DataTypeId: {{[0-9]+}}
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CHECK-NEXT: TotalAccessDensity: 20
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CHECK-NEXT: MinAccessDensity: 20
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CHECK-NEXT: MaxAccessDensity: 20
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CHECK-NEXT: TotalLifetimeAccessDensity: 20000
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CHECK-NEXT: MinLifetimeAccessDensity: 20000
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CHECK-NEXT: MaxLifetimeAccessDensity: 20000
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