From: Stephen Hemminger <stephen@networkplumber.org>
To: netdev@vger.kernel.org
Subject: Fw: [Bug 213943] New: Poor network speed with 10G NIC with kernel 5.13 (Intel X710-T2L)
Date: Thu, 12 Aug 2021 09:25:13 -0700 [thread overview]
Message-ID: <20210812092513.3e5ed199@hermes.local> (raw)
Begin forwarded message:
Date: Mon, 02 Aug 2021 14:05:30 +0000
From: bugzilla-daemon@bugzilla.kernel.org
To: stephen@networkplumber.org
Subject: [Bug 213943] New: Poor network speed with 10G NIC with kernel 5.13 (Intel X710-T2L)
https://bugzilla.kernel.org/show_bug.cgi?id=213943
Bug ID: 213943
Summary: Poor network speed with 10G NIC with kernel 5.13
(Intel X710-T2L)
Product: Networking
Version: 2.5
Kernel Version: 5.13.x
Hardware: Intel
OS: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: IPV4
Assignee: stephen@networkplumber.org
Reporter: ealrann@gmail.com
Regression: No
Hello,
On a server, I use to receive files (parallel cp with NFS4) with a 10g NIC
(Intel X710-T2L). I can usually achieve a total speed close to 1 GB/s
(generally 4 cp at the same time, targeted to 4 different HDD).
Switching to kernel 5.13 (Archlinux) with the exact same configuration, my
speed is now limited at 250MB/s. Rolling back to a previous kernel fix the
speed.
The problem is maybe in the last Intel driver i40e, but I don't really know how
to investigate more.
The problem still appear in 5.13.7 (last one at the moment).
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next reply other threads:[~2021-08-12 16:25 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-12 16:25 Stephen Hemminger [this message]
2021-08-16 15:14 ` [Bug 213943] New: Poor network speed with 10G NIC with kernel 5.13 (Intel X710-T2L) Jakub Kicinski
2021-08-16 18:48 ` Jesse Brandeburg
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