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feat(web-app-peertube): add dynamic performance tuning for heap and transcoding concurrency

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- Dynamically calculate PEERTUBE_MAX_OLD_SPACE_SIZE (~35% of container RAM, clamped between 768–3072 MB)
- Dynamically calculate PEERTUBE_TRANSCODING_CONCURRENCY (~½ vCPUs, min 1, max 8)
- Added default resource limits for Redis and Peertube containers
- Updated test suite to include human_to_bytes filter in built-in filter list

https://chatgpt.com/share/690914d2-6100-800f-a850-94e6d226e7c9
This commit is contained in:
Kevin Veen-Birkenbach
2025-11-03 21:47:38 +01:00
parent d3aad632c0
commit 7330aeb8ec
5 changed files with 60 additions and 16 deletions
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50
roles/web-app-peertube/vars/main.yml
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@@ -1,17 +1,47 @@
# General
application_id: "web-app-peertube"
database_type: "postgres"
application_id: "web-app-peertube"
database_type: "postgres"
# Docker
docker_compose_flush_handlers: true
docker_compose_flush_handlers: true
# Role variables
PEERTUBE_VERSION: "{{ applications | get_app_conf(application_id, 'docker.services.peertube.version') }}"
PEERTUBE_IMAGE: "{{ applications | get_app_conf(application_id, 'docker.services.peertube.image') }}"
PEERTUBE_CONTAINER: "{{ applications | get_app_conf(application_id, 'docker.services.peertube.name') }}"
PEERTUBE_DATA_VOLUME: "{{ applications | get_app_conf(application_id, 'docker.volumes.data') }}"
PEERTUBE_CONFIG_VOLUME: "{{ applications | get_app_conf(application_id, 'docker.volumes.config') }}"
PEERTUBE_VERSION: "{{ applications | get_app_conf(application_id, 'docker.services.peertube.version') }}"
PEERTUBE_IMAGE: "{{ applications | get_app_conf(application_id, 'docker.services.peertube.image') }}"
PEERTUBE_CONTAINER: "{{ applications | get_app_conf(application_id, 'docker.services.peertube.name') }}"
PEERTUBE_DATA_VOLUME: "{{ applications | get_app_conf(application_id, 'docker.volumes.data') }}"
PEERTUBE_CONFIG_VOLUME: "{{ applications | get_app_conf(application_id, 'docker.volumes.config') }}"
# OIDC
PEERTUBE_OIDC_PLUGIN: "peertube-plugin-auth-openid-connect"
PEERTUBE_OIDC_ENABLED: "{{ applications | get_app_conf(application_id, 'features.oidc', False) }}"
PEERTUBE_OIDC_PLUGIN: "peertube-plugin-auth-openid-connect"
PEERTUBE_OIDC_ENABLED: "{{ applications | get_app_conf(application_id, 'features.oidc') }}"
# === Dynamic performance defaults ==========================================
# Raw Docker configuration values (with sane fallbacks)
peertube_cpus: "{{ applications | get_app_conf(application_id, 'docker.services.peertube.cpus') | float }}"
peertube_mem_limit_raw: "{{ applications | get_app_conf(application_id, 'docker.services.peertube.mem_limit') }}"
peertube_mem_bytes: "{{ peertube_mem_limit_raw | human_to_bytes }}"
peertube_mem_mb: "{{ ((peertube_mem_bytes | int) // (1024 * 1024)) | int }}"
# ---------------------------------------------------------------------------
# Node heap size:
# ~35% of total RAM, but at least 768 MB, at most 3072 MB,
# and never more than 60% of total memory (safety cap for small containers)
# ---------------------------------------------------------------------------
_peertube_heap_candidate_mb: "{{ ((peertube_mem_mb | float) * 0.35) | round(0, 'floor') | int }}"
_peertube_heap_cap_mb: "{{ ((peertube_mem_mb | float) * 0.60) | round(0, 'floor') | int }}"
# Step 1: enforce minimum (≥768 MB)
_peertube_heap_min_applied: "{{ [ (_peertube_heap_candidate_mb | int), 768 ] | max }}"
# Step 2: determine hard cap (min of 3072 MB and 60% of total memory)
_peertube_heap_hardcap: "{{ [ 3072, (_peertube_heap_cap_mb | int) ] | min }}"
# Step 3: final heap = min(min-applied, hardcap)
PEERTUBE_MAX_OLD_SPACE_SIZE: "{{ [ (_peertube_heap_min_applied | int), (_peertube_heap_hardcap | int) ] | min }}"
# Transcoding concurrency: half the vCPUs; min 1, max 8
_peertube_concurrency_candidate: "{{ ((peertube_cpus | float) * 0.5) | round(0, 'floor') | int }}"
PEERTUBE_TRANSCODING_CONCURRENCY: "{{ [ ( [ (_peertube_concurrency_candidate | int), 1 ] | max ), 8 ] | min }}"