Why is 'go build' Significantly Slower After Updating to Go 1.3?

"go build" Performance Degradation Post-Go Version Update

After updating Go to version 1.3, a notable concern arose when the "go build" command experienced a significant slowdown, with execution time increasing from approximately 4 seconds to over 45 seconds. This issue persisted despite the lack of any other system modifications. Disabling the virus scanner also proved ineffective.

Possible Explanations and Solutions:

• Dependency Recompilation: The issue may stem from dependencies being recompiled during each "go build" process. To address this, employ the command "go install -a mypackage" to rebuild all dependencies comprehensively.
• Outdated Object Files: Residual object files can contribute to compilation delays. To purge these files, navigate to and remove the "$GOPATH/pkg" directory.
• Incompatible Versions: Compiling with the "-x" flag provides insights into whether the toolchain is encountering incompatible version conflicts. This flag displays a breakdown of the compilation process.

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