lorinlee opened a new pull request #1058: pprof: load symbol when init PProfService URL: https://github.com/apache/incubator-brpc/pull/1058 We guess it is likely that there is something wrong with this lazy loading symbol map. When process's memory is too large, this operation, which forks 'nm' subprocess several times, will copy a large page table several times. Copy page table holds mm.mmap_sem, which blocks mmap() and brk().
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