[llvm-bugs] [Bug 35536] New: lld might be creating DSOs that takes more time to load for the dynamic loader than those created by gold

via llvm-bugs llvm-bugs at lists.llvm.org
Tue Dec 5 11:32:46 PST 2017


https://bugs.llvm.org/show_bug.cgi?id=35536

            Bug ID: 35536
           Summary: lld might be creating DSOs that takes more time to
                    load for the dynamic loader than those created by gold
           Product: lld
           Version: unspecified
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P
         Component: ELF
          Assignee: unassignedbugs at nondot.org
          Reporter: ruiu at google.com
                CC: llvm-bugs at lists.llvm.org

According to
http://lists.llvm.org/pipermail/llvm-commits/Week-of-Mon-20171127/506937.html,
LLVM component build time with lld is slower than that with gold.

  gold:                         138.207661064 seconds time elapsed
  lld master:                   143.343427881 seconds time elapsed
  cutting bloom filter in half: 148.267076771 seconds time elapsed
  bloom filter of size 1:       180.053104591 seconds time elapsed

It implies that our DSO outputs are inefficient for the dynamic loader than
gold. This is not high priority, but we want to investigate it.

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