There are some bits of wisdom and workarounds required to have a
positive experience when profiling in an eventlet environment.
This patch adds a section where such wisdom can accumlate, and
also provides a workaround for a specific problem when profiling
nova-compute.
Change-Id: Id6362f20c831c43e4d3316fe573e28c6b891d459
Profiling eventlet using services is a bit different from standard
situations so here is a document that tries to explain the basics
on how to get started doing it.
Change-Id: If8c34653285f07c5cc1abccabfec16f18daafdde
This adds a testing guide for creating a down cell
environment with a basic single-node devstack setup.
Change-Id: I8c021129a4df914f56193cca9ff136390a7240c3
The time has come.
These filters haven't been necessary since Ocata [1]
when the filter scheduler started using placement
to filter on VCPU, DISK_GB and MEMORY_MB. The
only reason to use them with any in-tree scheduler
drivers is if using the CachingScheduler which doesn't
use placement, but the CachingScheduler itself has
been deprecated since Pike [2]. Furthermore, as of
change [3] in Stein, the ironic driver no longer
reports vcpu/ram/disk inventory for ironic nodes
which will make these filters filter out ironic nodes
thinking they don't have any inventory. Also, as
noted in [4], the DiskFilter does not account for
volume-backed instances and may incorrectly filter
out a host based on disk inventory when it would
otherwise be OK if the instance is not using local
disk.
The related aggregate filters are left intact for
now, see blueprint placement-aggregate-allocation-ratios.
[1] Ie12acb76ec5affba536c3c45fbb6de35d64aea1b
[2] Ia7ff98ff28b7265058845e46b277317a2bfc96d2
[3] If2b8c1a76d7dbabbac7bb359c9e572cfed510800
[4] I9c2111f7377df65c1fc3c72323f85483b3295989
Change-Id: Id62136d293da55e4bb639635ea5421a33b6c3ea2
Related-Bug: #1787910
According to "code conventions" [1], do not use "-y" option.
Instead, use apt-get install package, yum install package,
or zypper install package.
[1] https://docs.openstack.org/doc-contrib-guide/writing-style/
code-conventions.html
Change-Id: I49c9f0d63ba08656965c632644c45a0c92d874f9
Per the spec [1]:
contributor/ – anything related to contributing to the project or how
the team is managed. Applies to some of the current content under
/developer, we are changing the name to emphasize that not all
contributors are developers and sometimes developers are users but not
contributors.
We currently have a handful of docs that focus on the "how to develop or
contribute" aspects of nova, and these are moved. Docs that focus on
architecture or design decisions for nova are not moved, as these will
go into 'reference'.
A TODO is added to the former 'api_plugins' document as it's mega
out-of-date and needs some serious work.
[1] specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration
Change-Id: Iad770688b4eafeb9caa710b4398b02d80a017a70
Takashi NATSUME