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envelope-from=jonah.palmer@oracle.com; helo=mx0b-00069f02.pphosted.com X-Spam_score_int: -48 X-Spam_score: -4.9 X-Spam_bar: ---- X-Spam_report: (-4.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, MSGID_FROM_MTA_HEADER=0.001, NICE_REPLY_A=-2.076, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mst@redhat.com, kraxel@redhat.com, si-wei.liu@oracle.com, joao.m.martins@oracle.com, eblake@redhat.com, qemu-block@nongnu.org, david@redhat.com, armbru@redhat.com, arei.gonglei@huawei.com, marcandre.lureau@redhat.com, lvivier@redhat.com, thuth@redhat.com, michael.roth@amd.com, groug@kaod.org, dgilbert@redhat.com, eric.auger@redhat.com, stefanha@redhat.com, boris.ostrovsky@oracle.com, kwolf@redhat.com, mathieu.poirier@linaro.org, raphael.norwitz@nutanix.com, pbonzini@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --------------10oXGFsnSkq0OFSmH3e6KXTo Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/6/21 08:50, Christian Schoenebeck wrote: > On Montag, 6. Dezember 2021 13:43:18 CET Jonah Palmer wrote: >> This series introduces new QMP/HMP commands to dump the status of a >> virtio device at different levels. >> >> [Jonah: Rebasing previous patchset from Nov. 10 (v9). Original patches >> are by Laurent Vivier from May 2020. >> >> Rebase from v9 to v10 includes reformatting virtio.json examples and >> command structures for better consistency. Also removed all enums from >> virtio.json and replaced their purpose with string literals. >> >> Removed @ndescs from VirtioQueueElement, as the number of descriptors >> can be inferred from the length of the @descs chain. >> >> Lastly, removed the examples in hmp-commands-info.hx to fix 'inconsistent >> literal block quoting' warning from Sphinx.] > I have not followed the entire discussion. AFAICS this is intended to monitor > status information on virtio level only, like virtqueue fill status, etc. > > One thing that I am looking for is monitoring device specific information > above virtio level, e.g. certain performance numbers or statistics that only > make sense for the specific device. That would not fit into any of these > commands, right? > > Best regards, > Christian Schoenebeck Correct. These are just one-shot commands that dump information on virtio devices (including vhosts), their virtqueues, and virtqueue elements as they are at the time of the command. Jonah > > --------------10oXGFsnSkq0OFSmH3e6KXTo Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 7bit


On 12/6/21 08:50, Christian Schoenebeck wrote:
On Montag, 6. Dezember 2021 13:43:18 CET Jonah Palmer wrote:

This series introduces new QMP/HMP commands to dump the status of a
virtio device at different levels.

[Jonah: Rebasing previous patchset from Nov. 10 (v9). Original patches
 are by Laurent Vivier from May 2020.

 Rebase from v9 to v10 includes reformatting virtio.json examples and
 command structures for better consistency. Also removed all enums from
 virtio.json and replaced their purpose with string literals.

 Removed @ndescs from VirtioQueueElement, as the number of descriptors
 can be inferred from the length of the @descs chain.

 Lastly, removed the examples in hmp-commands-info.hx to fix 'inconsistent
 literal block quoting' warning from Sphinx.]

I have not followed the entire discussion. AFAICS this is intended to monitor 
status information on virtio level only, like virtqueue fill status, etc.

One thing that I am looking for is monitoring device specific information 
above virtio level, e.g. certain performance numbers or statistics that only 
make sense for the specific device. That would not fit into any of these 
commands, right?

Best regards,
Christian Schoenebeck
Correct. These are just one-shot commands that dump information on virtio
devices (including vhosts), their virtqueues, and virtqueue elements as they
are at the time of the command. 

Jonah
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