2015-04-02 19:30, jerry.lilijun at huawei.com:
> From: Lilijun <jerry.lilijun at huawei.com>
>
> In the function map_all_hugepages(), hugepage memory is truly allocated by
> memset(virtaddr, 0, hugepage_sz). Then it costs about 40s to finish the
> dpdk memory initialization when 40000 2M hugepages are setup in host os.
Yes it's something we should try to reduce.
> In fact we can only write one byte to finish the allocation.
Isn't it a security hole?
This article speaks about "prezeroing optimizations" in Linux kernel:
http://landley.net/writing/memory-faq.txt
