From: Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>
To: "Lombardo, Ed" <Ed.Lombardo@netscout.com>
Cc: users <users@dpdk.org>
Subject: Re: DPDK 22.11.2 requires too much VIRT memory, how to reduce
Date: Sun, 5 Nov 2023 21:22:50 +0300 [thread overview]
Message-ID: <CAEYuUWDsPoTZXxv9SHdLbwDio7e36P__+j=ZGoL0=VzxAJG2WQ@mail.gmail.com> (raw)
In-Reply-To: <PH0PR01MB67301F1FBFD731EE7A48AD288FABA@PH0PR01MB6730.prod.exchangelabs.com>
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Hi Ed,
DPDK indeed reserves a large amount of virtual address space at startup.
This does not prevent DPDK from running on low-memory systems, since this
reservation does not consume physical memory. So the large figure in VIRT
is not an issue. Hugepages are mapped on demand. Each mapped hugepage
consunes a file descriptor. If you use 2MB hugepages, the number of open
files can exhaust the limit easily. If you don't want to increase it,
please see:
https://doc.dpdk.org/guides/prog_guide/env_abstraction_layer.html#segment-file-descriptors
>
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next prev parent reply other threads:[~2023-11-05 18:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-05 16:00 Lombardo, Ed
2023-11-05 18:22 ` Dmitry Kozlyuk [this message]
2023-11-08 17:48 ` Lombardo, Ed
2023-11-08 18:12 ` Dmitry Kozlyuk
2023-11-08 22:26 ` Lombardo, Ed
2023-11-08 23:05 ` Dmitry Kozlyuk
2023-11-10 0:16 ` Lombardo, Ed
2023-11-10 9:31 ` Dmitry Kozlyuk
2023-11-10 9:37 ` Dmitry Kozlyuk
2024-03-14 2:51 ` Lombardo, Ed
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