From: David Marchand <david.marchand@redhat.com>
To: Sindhura Bandi <sindhura.bandi@certesnetworks.com>
Cc: "users@dpdk.org" <users@dpdk.org>
Subject: Re: How to enable logging and where to find the logs
Date: Thu, 29 Feb 2024 12:26:43 +0100 [thread overview]
Message-ID: <CAJFAV8zMyW3TLmC_8LamiedxjjUVZ6Yw-NUbucNGkusCpnvp7w@mail.gmail.com> (raw)
In-Reply-To: <DM5PR2201MB149814656A7BD41247F6CF90FE562@DM5PR2201MB1498.namprd22.prod.outlook.com>
Hello,
On Thu, Feb 29, 2024 at 9:51 AM Sindhura Bandi
<sindhura.bandi@certesnetworks.com> wrote:
>
> I might be asking a basic question here. I'm facing some issues while bringing up a dpdk interface on ovs-dpdk on debian-12. Dpdk version is 22.11.1.
> Dpdk seems to fail to allocate a mempool, even though there seem to be enough free huge page memory available on the machine.
>
Well, this is more a OVS question than a DPDK one :-)
There are two things to configure here.
> I tried to enable dpdk debugs using the following command,
> ovs-vsctl set Open_vSwitch . other_config:dpdk-extra="--log-level=lib.mbuf:debug"
First, as you tried, you must ask DPDK to emit debug logs for the mbuf library.
The above configuration is fine.
Just a small note that since OVS 2.14 you can enable logs dynamically
without having to restart OVS / setting a dpdk-extra param in ovsdb.
For example, I have no dpdk-extra config.
# ovs-appctl dpdk/log-list | grep mbuf
id 16: lib.mbuf, level is info
# ovs-appctl dpdk/log-set lib.mbuf:debug
# ovs-appctl dpdk/log-list | grep mbuf
id 16: lib.mbuf, level is debug
>
> The command was accepted, but I don't see any logs from dpdk anywhere in my /var/log.
That is because OVS log framework applies a filter.
# ovs-appctl vlog/list | grep dpdk
dpdk OFF ERR INFO
netdev_dpdk OFF ERR INFO
netdev_offload_dpdk OFF ERR INFO
The dpdk facility here is only logging ERR level messages to syslog,
and INFO level to the /var/log file.
You probably want to set:
# ovs-appctl vlog/set FILE:dpdk:dbg
# ovs-appctl vlog/list | grep dpdk
dpdk OFF ERR DBG
netdev_dpdk OFF ERR INFO
netdev_offload_dpdk OFF ERR INFO
Hope that helps.
--
David Marchand
prev parent reply other threads:[~2024-02-29 11:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-22 1:21 Sindhura Bandi
2024-02-29 11:11 ` Tummala, Sivaprasad
2024-02-29 11:26 ` David Marchand [this message]
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