On 2021-04-15 1:55 p.m., Randy MacLeod wrote:

On 2021-04-15 11:55 a.m., Richard Purdie wrote:

On Thu, 2021-04-15 at 11:31 -0400, Sakib Sajal wrote:

On 2021-04-15 9:52 a.m., Richard Purdie wrote:

[Please note: This e-mail is from an EXTERNAL e-mail address]

On Tue, 2021-04-13 at 13:02 -0400, sakib.sajal@... wrote:

collect-data template can run arbitrary commands/scripts
on a regular basis and logs the output in a file.

See oe-core for more details:
      edb7098e9e buildstats.bbclass: add functionality to collect build system stats

Signed-off-by: Sakib Sajal <sakib.sajal@...>
Signed-off-by: Randy MacLeod <Randy.MacLeod@...>
---
   config.json | 7 +++++++
   1 file changed, 7 insertions(+)

diff --git a/config.json b/config.json
index 5bfa240..c43d231 100644
--- a/config.json
+++ b/config.json
@@ -87,6 +87,13 @@
                   "SANITYTARGETS" : "core-image-full-cmdline:do_testimage core-image-sato:do_testimage core-image-sato-sdk:do_testimage"
               }
           },
+     "collect-data" : {
+            "extravars" : [
+                "BB_HEARTBEAT_EVENT = '10'",
+                "BB_LOG_HOST_STAT_ON_INTERVAL = '1'",
+                "BB_LOG_HOST_STAT_CMDS = 'oe-time-dd-test.sh 100'"
+            ]
+        },

Is the template used anywhere? I can't remember if we support nesting templates in which
case this is useful, or not?

We were using it for testing on the YP AB and thought it would be
useful if at some point the monitoring was dropped from the
default config.
I think we can just add it later if needed.

Richard,

I think that the web server for:
https://autobuilder.yocto.io/pub/non-release/
runs every 30 seconds via cron so if you are happy with
this crude dd trigger once things have soaked in master-next
and we want to gather some data overnight, could you merge to master?


I ran a simpler test with fewer io stressors from:
$ stress -hdd N
and have attached a graph with up to 3000! stressors that
we looked at this morning and another with up to 35 stressors.

It's a crude indicators but once we get beyond 18-20 io stressors
on the system I tested (48 cores, 128 GB RAM, 12 TB magnetic disk)
dd time become erratic.

Running qemu from tmpfs has clearly helped.
Let's gather some data and decide if we want to spend more time
learning how to monitor the system to tune how we are using it.

../Randy

../Randy

Cheers,

Richard

The template is not used anywhere, yet, the initial patchset enables the
data collection by default.

I have left the template in case the data collection is removed from
defaults and need to be used on a case by case basis.

I am not entirely sure if nesting templates work. I have not seen any
examples of it, neither did i try it myself. If nesting does work, the
template should be useful.

I had a quick look at the code and sadly, it doesn't appear I implemented
nesting so this wouldn't be that useful as things stand.

Cheers,

Richard

--
# Randy MacLeod
# Wind River Linux