[Question] What cause the long lanuch browser time?

[ChenShuy1]

Hi, there is a question about the browser lanunch time different between my remote machine(docker, debian OS) and my local machine(mac@10.15.7), I tried to figure out what cause the lanuch time different(CPUs or anything)
There is MAC lanunch Time, use 6ms:

pw:browser <launching> /Users/syc/Library/Caches/ms-playwright/chromium-965416/chrome-mac/Chromium.app/Contents/MacOS/Chromium --disable-background-networking --enable-features=NetworkService,NetworkServiceInProcess --disable-background-timer-throttling --disable-backgrounding-occluded-windows --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-background-pages --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=ImprovedCookieControls,LazyFrameLoading,GlobalMediaControls,DestroyProfileOnBrowserClose,MediaRouter,AcceptCHFrame,AutoExpandDetailsElement --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-backgrounding --disable-sync --force-color-profile=srgb --metrics-recording-only --no-first-run --enable-automation --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --enable-use-zoom-for-dsf=false --headless --hide-scrollbars --mute-audio --blink-settings=primaryHoverType=2,availableHoverTypes=2,primaryPointerType=4,availablePointerTypes=4 --no-sandbox --disable-gpu --no-zygote --disable-accelerated-2d-canvas --user-data-dir=/var/folders/j1/lwz7382n12q_d54r6g73bpx00000gn/T/playwright_chromiumdev_profile-XiF6WW --remote-debugging-pipe --no-startup-window +0ms
  pw:browser <launched> pid=23399 +6ms
  pw:browser [pid=23399] <gracefully close start> +1m
  pw:browser [pid=23399] <process did exit: exitCode=0, signal=null> +30ms
  pw:browser [pid=23399] starting temporary directories cleanup +0ms
  pw:browser [pid=23399] finished temporary directories cleanup +5ms
  pw:browser [pid=23399] <gracefully close end> +0ms

There is Remote Debian Machine Time, use 2s:

pw:browser  /ms-playwright/chromium-965416/chrome-linux/chrome --disable-background-networking --enable-features=NetworkService,NetworkServiceInProcess --disable-background-timer-throttling --disable-backgrounding-occluded-windows --disable-breakpad --disable-client-side-phishing-detection --disable-component-extensions-with-background-pages --disable-default-apps --disable-dev-shm-usage --disable-extensions --disable-features=ImprovedCookieControls,LazyFrameLoading,GlobalMediaControls,DestroyProfileOnBrowserClose,MediaRouter,AcceptCHFrame,AutoExpandDetailsElement --allow-pre-commit-input --disable-hang-monitor --disable-ipc-flooding-protection --disable-popup-blocking --disable-prompt-on-repost --disable-renderer-backgrounding --disable-sync --force-color-profile=srgb --metrics-recording-only --no-first-run --enable-automation --password-store=basic --use-mock-keychain --no-service-autorun --export-tagged-pdf --headless --hide-scrollbars --mute-audio --blink-settings=primaryHoverType=2,availableHoverTypes=2,primaryPointerType=4,availablePointerTypes=4 --no-sandbox --disable-gpu --no-zygote --disable-accelerated-2d-canvas --user-data-dir=/tmp/playwright_chromiumdev_profile-UUacsp --remote-debugging-pipe --no-startup-window +0ms
  pw:browser  pid=197 +2s
  pw:browser [pid=197][err] [0421/042436.435031:ERROR:bus.cc(397)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory +102ms
  pw:browser [pid=197][err] [0421/042436.435134:ERROR:bus.cc(397)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory +0ms
  pw:browser [pid=197][err] [0421/042436.443952:WARNING:bluez_dbus_manager.cc(248)] Floss manager not present, cannot set Floss enable/disable. +9ms
  pw:browser [pid=197][err] [0421/042436.497203:ERROR:sandbox_linux.cc(377)] InitializeSandbox() called with multiple threads in process gpu-process. +53ms
  pw:browser [pid=197]  +1m
  pw:browser [pid=197]  +16ms
  pw:browser [pid=197] starting temporary directories cleanup +0ms
  pw:browser [pid=197] finished temporary directories cleanup +4ms
  pw:browser [pid=197]  +0ms

It seems like 6ms vs 2000ms, I want to know machine settings or playwright settings affect startup time. Look for your answer:)

[yury-s]

Well, it may be affected by many factors, these logs don't give any clue. Perhaps it's just cold start and when you launch it second time on the same machine, it will be faster? It may well be that the debian machine (vm?) is more constrained on resources or profile directory access under /tmp/playwright_chromiumdev_profile-* is slow.

Closing this issue as there is not much we can do based on the data. Feel free to file a new one if you have evidence that it might be a bug in Playwright that causes the slowness.