michaelpg@ is this reproducible with specific sites or any Flash site?

Could you also add more version and device info? First 5-6 lines from about: page.

I've only noticed this once so far, there wasn't any particular Flash-heavy page open that I can recall, and the issue persisted after closing all tabs.


Google Chrome	50.0.2661.79 (Official Build) beta (64-bit)
Revision	0
Platform	7978.57.0 (Official Build) beta-channel samus
Blink	537.36 (@0)
JavaScript	V8 5.0.71.32
Flash	21.0.0.216-r1
User Agent	Mozilla/5.0 (X11; CrOS x86_64 7978.57.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/50.0.2661.79 Safari/537.36

Also a sanitized command line:

/opt/google/chrome/chrome --ppapi-flash-path=/opt/google/chrome/pepper/libpepflashplayer.so --ppapi-flash-version=21.0.0.216-r1 --ppapi-flash-args=enable_hw_video_decode=1 --enable-fixed-position-compositing --enable-impl-side-painting --max-tiles-for-interest-area=512 --ui-enable-per-tile-painting --ui-prioritize-in-gpu-process --use-gl=egl --enable-native-gpu-memory-buffers --gpu-sandbox-failures-fatal=yes --enable-logging --log-level=1 --use-cras --enable-wayland-server --user-data-dir=/home/chronos --max-unused-resource-memory-usage-percentage=5 --login-profile=user --enable-natural-scroll-default --has-chromeos-keyboard --default-wallpaper-large=/usr/share/chromeos-assets/wallpaper/default_large.jpg --default-wallpaper-small=/usr/share/chromeos-assets/wallpaper/default_small.jpg --child-wallpaper-large=/usr/share/chromeos-assets/wallpaper/child_large.jpg --child-wallpaper-small=/usr/share/chromeos-assets/wallpaper/child_small.jpg --guest-wallpaper-large=/usr/share/chromeos-assets/wallpaper/guest_large.jpg --guest-wallpaper-small=/usr/share/chromeos-assets/wallpaper/guest_small.jpg --enable-prefixed-encrypted-media --enterprise-enrollment-initial-modulus=14 --enterprise-enrollment-modulus-limit=18 --vmodule=screen_locker=1,webui_screen_locker=1,*ui/display/chromeos*=1,*ash/display*=1,*ui/ozone*=1,*zygote*=1,*plugin*=2,*chromeos/login/*=1 --login-user=redacted@example.com --login-profile=redacted-hash-here --flag-switches-begin --ash-enable-touch-view-testing --flag-switches-end

In theory the Flash process should get terminated after a few seconds/minutes of no tabs.

#3: The only reason I closed all my tabs was to see whether a particular tab was causing the issue. Normally I would just go on with my day and be irked that the fan is so loud.

I looked at the trace. Unfortunately I have nothing actionable here. I'll close it, but please reopen if you have a repro or maybe a feedback report. Thank you!

Ok, thanks. Is there anything else I should do if I notice it again, besides tracing and a feedback report?

I am really unable to guess where to problem is. It is a wide field. The chrome trace above doesn't contain ppapi. If it was Flash process itself burning cycles, one needed Flash symbols and run "perf top" to see what Flash actually is doing. Also ps -ef | grep type=ppapi might be interesting, but is already contained in the feedback report. Long story short, this issue really needs a repro. :-(