linux/poky.git/bitbake/lib/bb/runqueue.py, branch nanbield-4.3

bitbake: bitbake/lib: spawn server/worker using the current Python interpreter

2023-09-26T09:37:17+00:00

The user may have invoked ./bin/bitbake using a different Python interpreter than whatever python3 is on $PATH (for example, explicitly using a different version). However, as the server and workers are spawned directly they'll use the hashbang and thus a different Python. We also ensure that argv[0] is set to sys.executable instead of 'bitbake-server' or 'bitbake-worker', so that sys.executable is set to the right value inside the child. Without this the server won't be able to start any workers. (Bitbake rev: b44d5d2a53d3082c8ce94e09c0cf833e33e25aec) Signed-off-by: Ross Burton Signed-off-by: Richard Purdie

bitbake: bitbake-worker/runqueue: Avoid unnecessary bytes object copies

2023-09-22T06:45:47+00:00

declaring queue=b"" creates an object of types bytes(). bytes() is an immutable object, and therefore doing "self.queue = self.queue + r" creates a new object containing "self.queue" concatenated with "r". On my test setup, we are passing 180MB of data of "workerdata" to the bitbake-worker, so those copies significantly slow down the initialization of the bitbake-worker. Rather use bytearray() which a mutable type, and use extend() to avoid copies. In my test setup, byterray.extend() is 10.000 times faster than copying the queue, for a queue size of 180MB. (Bitbake rev: 2302b5316091dff189e6c3f546341b2274ed9d0a) Signed-off-by: Etienne Cordonnier Signed-off-by: Richard Purdie

bitbake: runqueue: show number of currently running bitbake threads when pressure changes

2023-09-05T07:13:13+00:00

* it might be a bit confusing as it shows number of threads before making the decision to start more tasks and also it can show only a few tasks running, but not because of pressure when there just aren't many tasks left or wait for their dependencies to be finished first * example output: NOTE: Pressure status changed to CPU: True, IO: None, Mem: None (CPU: 297589.5/200000.0, IO: 5522.2/None, Mem: 779.2/None) - using 7/8 bitbake threads NOTE: Pressure status changed to CPU: False, IO: None, Mem: None (CPU: 196381.2/200000.0, IO: 2667.9/None, Mem: 556.2/None) - using 2/8 bitbake threads (Bitbake rev: b0b114f31f20c5fcde31e6c308937ad4102dfe0a) Signed-off-by: Martin Jansa Signed-off-by: Richard Purdie

bitbake: runqueue: show more pressure data

2023-08-24T15:49:38+00:00

* with latest bitbake I'm seeing very low number of bitbake tasks executed in parallel, probably due to pressure regulation show the values this is based on in the note * also simplify a bit by counting the pressure and exceeds signs only once (Bitbake rev: 21c17968f801e406ef7f328656587fadd9ef7f5d) Signed-off-by: Martin Jansa Signed-off-by: Richard Purdie

bitbake: runqueue.py: fix PSI check logic

2023-08-11T16:00:40+00:00

The current calculation is not correct because if tdiff is less than 1.0, it's not taken into consideration when calculating the current pressure. Also, make it clear that the 1.0s is the psi accumulation cycle, which might be changed in the future. We have this cycle because it could largely avoid the 0 result issue, that is, if the interval between checks are too small, the result might be 0. With this accumulation logic, which has been there but let's make it clear, this 0 result problem could be mitigated. (Bitbake rev: 95fa8fb5fb4d5a72e79b11d69792613bfd494e72) Signed-off-by: Chen Qi Signed-off-by: Richard Purdie

bitbake: runqueue: convert deferral messages from bb.note to bb.debug

2023-07-19T18:39:48+00:00

Using multiconfig to target baremetal pieces of the system and building corresponding toolchains for them results in hundreds and hundreds of "Deferring %s after %s" and "Deferred task %s now buildable". To clean up the output and to reduce risk of missing important warnings, convert these notice messages to debug messages. (Bitbake rev: 64bc00a46d1aacc23fe7e8d9a46a126f3a4bc318) Signed-off-by: Denys Dmytriyenko Signed-off-by: Denys Dmytriyenko Signed-off-by: Richard Purdie

bitbake: runqueue: Add pressure change logging

2023-07-19T18:39:48+00:00

It is currently hard to tell when bitbake is throttling task execution due to system pressure changes. Add notes to the console output to make this clearer, only generating output when the values change. (Bitbake rev: a6056599922fb2fe3f54c5c86ac7ea604f469adc) Signed-off-by: Richard Purdie

bitbake: runqueue: Fix deferred task/multiconfig race issue

2023-06-28T22:02:50+00:00

If there are several multiconfigs in play for example a non-multiconfig with a task with one hash and then three multiconfigs for the same task, different architectures but the same hash (different to the non-mc), the three mcs will be deferred until after the non-mc task but then will all run together and race against each other. Change the code to re-enable deferred tasks one at a time. This way, if they do race, they won't run in parallel against each other. (Bitbake rev: 9523e28658ad7fb446645b590608dfac2812afd3) Signed-off-by: Richard Purdie

bitbake: runqueue: Fix handling of virtual files in layername calculation

2023-06-20T11:36:26+00:00

I'd tested target configurations but in real world use, it became clear the layername functionality in worker context was failing for virtual class extensions. Fix this. (Bitbake rev: 888778ebfa85677ff36065dfcd0f8a7684edfc80) Signed-off-by: Richard Purdie

bitbake: runqueue: Pass hashfn in taskdep data

2023-06-01T07:08:33+00:00

Include the hashfn (the value of BB_HASHFILENAME) in the task dependency data. This allows tasks to get a specific unique hash for dependent tasks when one is available. (Bitbake rev: 4dbecf6059e495246267b09d0f43086d51e6df2c) Signed-off-by: Joshua Watt Signed-off-by: Richard Purdie