Yup, the median shutdown duration for Release 39 users on Windows with
Telemetry is 2.3 seconds for example: http://mzl.la/1HSHiD8
Those are also the kinds of shutdown times I see on my Windows machines
when I have 3-5 windows open with 5-10 tabs each.
What is your experience?
Btw, you can go to about:telemetry and look through your archived Telemetry
pings to see a history of your own shutdownDurations. Open about:telemetry,
select "Archived ping data", open the "Simple Measurements" section, and
use the next-previous arrows to look through your Telemetry submissions.
Focus on the "saved-session" pings.
On Fri, Jul 10, 2015 at 5:33 PM, Mike Hommey <m...@glandium.org> wrote:
> On Fri, Jul 10, 2015 at 03:59:43PM -0400, Vladan Djeric wrote:
> > A few of us on the perf team (+ Joel Maher) looked at e10s performance &
> > stability using Talos, Telemetry, and crash-stats. I wrote up the
> > conclusions below.
> >
> > Notable improvements in Talos tests [1]:
> >
> > * Hot startup time in Talos improved by about 50% across all platforms
> > (ts_paint [2]). This test measures time from Firefox launch until a
> Firefox
> > window is first painted (ts_paint); I/O read costs are not accounted for,
> > as data is already cached in the OS disk buffer before the test.
> > * The tsvgr_opacity test improved 50-80% across all platforms. This is a
> > sign of a reduction in the overhead of loading a page, instead of an
> > improvement in actual SVG performance.
> > * Linux scrolling performance improved 5-15%
> > * The long-standing e10s WebGL performance regression has been fixed
> > * SVG rendering performance (tsvgx) is ~25% better on Windows 7 & 8, but
> it
> > is 10% worse on Windows XP and 25% worse on Linux
> >
> > Notable regressions in Talos tests [1]:
> >
> > * There are several large regressions unique to Windows XP. Scrolling
> > smoothness regressed significantly (5-6 times worse on tp5o_scroll and
> > tscrollx [2]), resizing of Firefox windows is 150% worse (tresize), SVG
> > rendering performance is 25% worse (tsvgx)
> > * Page loading time regressed across all platforms (tp5o). Linux
> regressed
> > ~30%, OS X 10.10 regressed 20%, WinXP/Win8/Win7 all regressed ~10%.
> > Page-loading with accessibility enabled (a11yr) saw similar regressions.
> > * Time to open a new Firefox window (tpaint) regressed 30% on Linux, and
> > across different versions of Windows (<10%)
> > * Resizing of Firefox windows (tresize) is ~15% worse on Linux
> > * Note: not all tests are compatible with e10s yet (e.g. session-restore
> > performance test) so this list isn't complete
> >
> > Notable improvements from Telemetry data [3]:
> >
> > * Overall tab animation smoothness improved significantly: 50% vs 30% of
> > tab animation frames are hitting the target 16ms inter-frame interval.
> See
> > FX_TAB_ANIM_* graphs in [3] to see the distribution of frame intervals.
> > Note that not all tab animations benefited equally.
> > * e10s significantly decreased jank caused by GC & CC, both in parent &
> > content processes (GC_MAX_PAUSE_MS, GC_SCC_SWEEP_MAX_PAUSE_MS,
> > CYCLE_COLLECTOR_MAX_PAUSE, etc [3])
> > * Unlike Talos, Telemetry suggests that the time to open a new Firefox
> > window improved with e10s (FX_NEW_WINDOW_MS)
> > * Median time to restore a saved session improved by 40ms or 20%
> > ("simpleMeasurements/sessionRestored")
> > * Median shutdown duration improved by 120ms or 10%
> > ("simpleMeasurements/shutdownDuration")
>
> Wait. What? Median shutdown duration is 1.2s ?!?
>
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