Closed Bug 764905 Opened 10 years ago Closed 10 years ago

Randomly flip preload on/off, independent of whether update service deleted prefetch

Categories

(Core :: General, defect)

x86_64
Windows 7
defect
Not set
normal

Tracking

()

RESOLVED FIXED
mozilla16

People

(Reporter: taras.mozilla, Assigned: bbondy)

References

Details

Attachments

(1 file, 1 obsolete file)

Should add a new (binary?) histogram to indicate whether we decided to prefetch or not. I think 50% rand() is fine for this, unless there are other startup experiments we want to do at the same time.
I guess we want to avoid this spilling on some channels. Which channels would it be suitable for? aurora + nightly? only nightly?
Aurora/nightly sounds good to me.
Maybe we should try no prefetch + no preload?
(In reply to Brian R. Bondy [:bbondy] from comment #3)
> Maybe we should try no prefetch + no preload?

Worth a try, but that requires being able to randomly remove prefetch files. Seems like something best done in own bug.
Specifically I'd like to see if no prefetch + no preload is faster than no prefetch + preload.  So both have no prefetch.
Assignee: mh+mozilla → netzen
Depends on: 764019
Attached patch Patch v1. (obsolete) — Splinter Review
Attachment #633340 - Flags: review?(taras.mozilla)
Comment on attachment 633340 [details] [diff] [review]
Patch v1.

r+ if you change STARTUP_USING_PRELOAD to STARTUP_USING_PRELOAD_TRIAL or something. It's ok to reuse a histogram for a slightly different meaning, not ok to change histogram bucket distribution, it really confuses our frontend.
Attachment #633340 - Flags: review?(taras.mozilla) → review+
Attached patch Patch v2Splinter Review
Made histogram name change.
Attachment #633340 - Attachment is obsolete: true
Attachment #633507 - Flags: review+
https://hg.mozilla.org/mozilla-central/rev/6291213e96ee
Status: NEW → RESOLVED
Closed: 10 years ago
Resolution: --- → FIXED
Blocks: 765850
Blocks: 770874
Blocks: 771745
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