From: Brijesh Singh <brijesh.s.singh@gmail.com>
To: dev@dpdk.org
Subject: [dpdk-dev] Mmap query
Date: Mon, 11 Oct 2021 10:25:01 -0700 [thread overview]
Message-ID: <CAAQ1jEGTF=uOG=CeqZ1N8XD9i6DZgOHVw-fSQfDj7X27xNoi=w@mail.gmail.com> (raw)
Hi there,
We are seeing high mmap time for 1G hugepage during eal memalloc init. Most
time is spent for clearing page, each 4k size..
It's not clear to me why clear huge pages is called? The code mmaps rte_map
file with map_populate and map_shared this shouldn't cause page zeroing.
I am curious to know how zeroing is forced? As an alternative, I would like
to memset from userspace. In my experiment we are noticing memset 1G file
is faster that clear huge pages.
Apreciate your help.
Regards
Brijesh
next reply other threads:[~2021-10-11 17:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-11 17:25 Brijesh Singh [this message]
2021-10-11 19:38 ` Dmitry Kozlyuk
2021-10-12 0:24 ` Brijesh Singh
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