Why is my pprof tool producing incorrect output for my Golang application?

pprof Tool Malfunctioning in Golang

Despite previously functioning effectively, the pprof tool has abruptly deteriorated, generating erroneous output regardless of the profiling target. This issue affects both cpu and memprofiling, producing callgraphs that are disproportionately barren in relation to the complexity of the profiled applications.

The impacted web applications are performing adequately, receiving millions of requests and generating appropriate responses. The problem surfaced abruptly a few days ago on macOS Yosemite, persisting even after an upgrade to El Capitan.

The application in question imports the "github.com/davecheney/profile" package and initiates profiling within the main function through "defer profile.Start(profile.MemProfile).Stop()." However, the pprof tool seems to malfunction when invoked as:

go tool pprof /var/folders/26/2sj70_sn72l_93j7tf6r07gr0000gn/T/profile614358295/mem.pprof

This call omits the binary that was profiled. To resolve this, the tool should be invoked as follows:

go tool pprof ./orig /var/folders/26/2sj70_sn72l_93j7tf6r07gr0000gn/T/profile614358295/mem.pprof

where "orig" represents the binary that was built with profiling enabled. This modification should restore the pprof tool to its previous functionality.

The above is the detailed content of Why is my pprof tool producing incorrect output for my Golang application?. For more information, please follow other related articles on the PHP Chinese website!