Properly rebuild optimization data when it changes #56397
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The timestamp of the merged .mibc file was set to when the tool was invoked, while the inputs have a timestamp from when they were created in the training scenarios. That means the target to create the merged .mibc file would not run incrementally until many weeks later. To fix add an --inherit-timestamp flag to dotnet-pgo that makes the merged output inherit the max timestamp from the inputs. This is not ideal as it means incrementally going backwards does not work, but it's better than the previous behavior. Fix dotnet#53637
EgorBo
reviewed
Jul 27, 2021
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| commandLineOptions.OutputFileName.CreationTimeUtc = Latest(commandLineOptions.InputFilesToMerge.Select(fi => fi.CreationTimeUtc)); | ||
| commandLineOptions.OutputFileName.LastWriteTimeUtc = Latest(commandLineOptions.InputFilesToMerge.Select(fi => fi.LastWriteTimeUtc)); | ||
| } |
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You could do it in one chain 🙂:
commandLineOptions.InputFilesToMerge
.Select(fi => fi.CreationTimeUtc)
.Combine(commandLineOptions.InputFilesToMerge.Select(fi => fi.LastWriteTimeUtc))
.OrderByDescending(d => d).FirstOrDefault();
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I'm setting CreationTimeUtc and LastWriteTimeUtc separately here, so I would need two chains (or set both to the same, I guess that would work too). Actually, I see now that I can just use .Max() so will change it to that.
EgorBo
reviewed
Jul 27, 2021
EgorBo
approved these changes
Jul 27, 2021
davidwrighton
approved these changes
Jul 28, 2021
thaystg
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Jul 28, 2021
…bug_tests * origin/main: (274 commits) Disable test ConnectWithCertificateForDifferentName_Throws (dotnet#56456) Update dependencies from https://github.com/mono/linker build 20210726.2 (dotnet#56374) Cleanup disabled test conditions (dotnet#56381) [mono] Add GC unsafe transition to mono_unhandled_exception (dotnet#56380) don't fail the file extraction when we can't set last write time (dotnet#56370) Properly rebuild optimization data when it changes (dotnet#56397) Make open function calls in coreclr EINTR resilient on macOS (dotnet#56403) Fix dependency from EventLog to TraceSource ref (dotnet#56417) Fix comments in asm with JitDiffableDasm=1 (dotnet#56416) Catch TcpClient ctor exceptions in FtpWebRequest.CreateConnectionAsync (dotnet#56379) Add interop between serializer and DOMs (dotnet#56112) Fix type loader not recognizing overridden method (dotnet#56337) Prevent Segfault in EventPipe on disable (dotnet#56104) Update runtimeconfig.json and deps.json paths when these break past the MAX_PATH threshold (dotnet#56224) Use native allocator instead of pinning when decompressing embedded PDB (dotnet#56336) Specify win-x64 as a valid platform in the microsoft-net-runtime-* workloads for iOS/tvOS/MacCatalyst (dotnet#56311) Fix FailFast message formatting race (dotnet#56388) Try to fix finalizer-based async tests (dotnet#56384) Fix MetricsEventSource tests (dotnet#56382) Remove invalid Castle.DynamicProxy.Internal.AbstractInvocation from ILLink descriptor files (dotnet#56392) ...
thaystg
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* origin/main: (95 commits) Disable test ConnectWithCertificateForDifferentName_Throws (dotnet#56456) Update dependencies from https://github.com/mono/linker build 20210726.2 (dotnet#56374) Cleanup disabled test conditions (dotnet#56381) [mono] Add GC unsafe transition to mono_unhandled_exception (dotnet#56380) don't fail the file extraction when we can't set last write time (dotnet#56370) Properly rebuild optimization data when it changes (dotnet#56397) Make open function calls in coreclr EINTR resilient on macOS (dotnet#56403) Fix dependency from EventLog to TraceSource ref (dotnet#56417) Fix comments in asm with JitDiffableDasm=1 (dotnet#56416) Catch TcpClient ctor exceptions in FtpWebRequest.CreateConnectionAsync (dotnet#56379) Add interop between serializer and DOMs (dotnet#56112) Fix type loader not recognizing overridden method (dotnet#56337) Prevent Segfault in EventPipe on disable (dotnet#56104) Update runtimeconfig.json and deps.json paths when these break past the MAX_PATH threshold (dotnet#56224) Use native allocator instead of pinning when decompressing embedded PDB (dotnet#56336) Specify win-x64 as a valid platform in the microsoft-net-runtime-* workloads for iOS/tvOS/MacCatalyst (dotnet#56311) Fix FailFast message formatting race (dotnet#56388) Try to fix finalizer-based async tests (dotnet#56384) Fix MetricsEventSource tests (dotnet#56382) Remove invalid Castle.DynamicProxy.Internal.AbstractInvocation from ILLink descriptor files (dotnet#56392) ...
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The timestamp of the merged .mibc file was set to when the tool was
invoked, while the inputs have a timestamp from when they were created
in the training scenarios. That means the target to create the merged
.mibc file would not run incrementally until many weeks later.
To fix add an --inherit-timestamp flag to dotnet-pgo that makes the
merged output inherit the max timestamp from the inputs. This is not
ideal as it means incrementally going backwards does not work, but it's
better than the previous behavior.
Fix #53637