[LLVMbugs] [Bug 10745] New: runtime/memory usage regression in static analyzer

bugzilla-daemon at llvm.org bugzilla-daemon at llvm.org
Thu Aug 25 11:55:55 PDT 2011


           Summary: runtime/memory usage regression in static analyzer
           Product: clang
           Version: trunk
          Platform: Other
        OS/Version: FreeBSD
            Status: NEW
          Severity: normal
          Priority: P
         Component: Static Analyzer
        AssignedTo: kremenek at apple.com
        ReportedBy: uspoerlein at gmail.com
                CC: llvmbugs at cs.uiuc.edu

Created an attachment (id=7128)
 --> (http://llvm.org/bugs/attachment.cgi?id=7128)
Before/after memory, swap and cpu usage for scan-build

Hi, so I'm running regular scan-builds with ToT clang against ToT freebsd.
Somewhere between July 27 and July 30 the runtime for these runs increased from
about 15h to more than 30h. The memory usage also increased dramatically,
resulting in clang being killed due to OOM a couple of times during the run.


the logfile's last-modified dates on that page show you the effective running
time (they all start around midnight UTC).

I also have cpu/ram/swap usage monitoring on that box (it is partially broken,
but it is evident how the cpu/ram usage jumped up at the end of July), see

I don't follow the development closely, but I haven't seen any changes in
llvm/tools/clang/tools/scan-build during that timeframe.

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