[Bug libc/1541] Poor threaded application performance when using malloc

[roland at gnu dot org]

------- Additional Comments From roland at gnu dot org  2005-11-01 08:05 -------
Have you done any profiling to substantiate your analysis of why it is slower?
I see nothing in the kernel to suggest that brk preallocates zero-fill pages.
Your test program preallocates them in its early iterations and then reuses
those pages by freeing and allocating repeatedly, I would suspect.  Profiling
would show the time spent in mmap/munmap syscalls vs spent faulting in pages,
for example.

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                 CC|                            |roland at gnu dot org
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http://sourceware.org/bugzilla/show_bug.cgi?id=1541

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