[webkit-dev] Flaky test hit list

[Eric Seidel]

I see:
[2010-09-30 16:52:57,560] [CRITICAL] root: [Errno 48] Address already in use

in my pywebsocket.ws.log-30Sep2010-165257-err.txt after an error.  Not
sure if it's related, but sounds possible. :)

On Thu, Sep 30, 2010 at 3:10 PM, Adam Barth <abarth at webkit.org> wrote:
> I'm investigating the websocket issue.  It seems these tests are flaky
> because they time out.  If you know about websockets, I'd appreciate
> any tips you have via #webkit.
>
> Adam
>
>
> On Wed, Sep 29, 2010 at 11:31 PM, Adam Barth <abarth at webkit.org> wrote:
>> Tonight I wrote a new webkit-patch command for detecting flaky tests.
>> Here the tests that have flaked out on the Snow Leopard (Tests) build
>> bot during the last 2000 revisions.  This makes a good "hit list" of
>> tests to fix to reduce flakiness.  (The worst offenders are at the
>> bottom).
>>
>> Take aways:
>>
>> 1) compositing/geometry/limit-layer-bounds-transformed-overflow.html
>> is by far the worst offender.
>> 2) The websocket tests are ridiculously flaky.
>> 3) The appcache tests also have a serious flakiness problem.
>>
>> I'll run the last 10000 revisions over night and report on the results.
>>
>> Adam
>>
>>
>> === Results ===
>> Occurances Test name
>>         1 compositing/reflections/nested-reflection-animated.html
>>         1 fast/css/font-face-download-error.html
>>         1 fast/dom/collection-null-like-arguments.html
>>         1 fast/history/history-subframe-with-name.html
>>         1 fast/js/sputnik/Conformance/13_Function_Definition/13.2_Creating_Function_Objects/S13.2.2_A5_T1.html
>>         1 fast/js/sputnik/Conformance/13_Function_Definition/13.2_Creating_Function_Objects/S13.2.2_A5_T2.html
>>         1 fast/js/vardecl-preserve-arguments.html
>>         1 http/tests/appcache/different-https-origin-resource-main.html
>>         1 http/tests/appcache/fallback.html
>>         1 http/tests/appcache/manifest-redirect.html
>>         1 http/tests/appcache/origin-quota.html
>>         1 http/tests/appcache/resource-redirect.html
>>         1 http/tests/appcache/top-frame-3.html
>>         1 http/tests/appcache/update-cache.html
>>         1 http/tests/appcache/xhr-foreign-resource.html
>>         1 http/tests/cache/subresource-expiration.html
>>         1 http/tests/loading/basic-credentials-sent-automatically.html
>>         1 http/tests/misc/uncacheable-script-repeated.html
>>         1 http/tests/navigation/changing-frame-hierarchy-in-onload.html
>>         1 http/tests/navigation/ping-cross-origin-from-https.html
>>         1 http/tests/navigation/ping-cross-origin.html
>>         1 http/tests/navigation/post-goback-same-url.html
>>         1 http/tests/plugins/get-url.html
>>         1 http/tests/plugins/npapi-response-headers.html
>>         1 http/tests/plugins/third-party-cookie-accept-policy.html
>>         1 http/tests/security/credentials-in-referer.html
>>         1 http/tests/security/cross-frame-access-protocol-explicit-domain.html
>>         1 inspector/debugger-pause-on-breakpoint.html
>>         1 inspector/extensions-events.html
>>         1 media/audio-constructor.html
>>         1 media/video-currentTime-set.html
>>         1 plugins/destroy-stream-twice.html
>>         1 plugins/return-error-from-new-stream-doesnt-invoke-destroy-stream.html
>>         1 svg/custom/use-invalid-style.svg
>>         1 transitions/transition-end-event-transform.html
>>         1 websocket/tests/send.html
>>         1 websocket/tests/simple-stress.html
>>         1 websocket/tests/sub-protocol-with-space.html
>>         1 websocket/tests/url-no-trailing-slash.html
>>         1 websocket/tests/url-with-empty-query.html
>>         1 websocket/tests/url-with-query.html
>>         1 websocket/tests/websocket-pending-activity.html
>>         1 websocket/tests/workers/close-in-onmessage-crash.html
>>         2 http/tests/appcache/foreign-iframe-main.html
>>         2 http/tests/appcache/local-content.html
>>         2 http/tests/appcache/main-resource-hash.html
>>         2 http/tests/appcache/non-html.xhtml
>>         2 http/tests/appcache/reload.html
>>         2 http/tests/css/css-image-loading.html
>>         2 http/tests/plugins/cross-frame-object-access.html
>>         2 http/tests/security/cross-frame-access-port-explicit-domain.html
>>         2 security/block-test.html
>>         2 websocket/tests/bad-sub-protocol-non-ascii.html
>>         2 websocket/tests/handshake-fail-by-sub-protocol-mismatch.html
>>         2 websocket/tests/simple.html
>>         2 websocket/tests/unicode.html
>>         3 http/tests/appcache/cyrillic-uri.html
>>         3 http/tests/appcache/deferred-events-delete-while-raising.html
>>         3 http/tests/appcache/remove-cache.html
>>         3 http/tests/appcache/top-frame-4.html
>>         3 http/tests/navigation/image-load-in-unload-handler.html
>>         3 websocket/tests/handshake-fail-by-cross-origin.html
>>         3 websocket/tests/httponly-cookie.pl
>>         3 websocket/tests/long-invalid-header.html
>>         3 websocket/tests/sub-protocol.html
>>         3 websocket/tests/url-with-query-for-no-query.html
>>         4 fast/canvas/webgl/gl-object-get-calls.html
>>         4 http/tests/navigation/anchor-basic.html
>>         4 websocket/tests/bad-sub-protocol-control-chars.html
>>         4 websocket/tests/frame-length-longer-than-buffer.html
>>         4 websocket/tests/frame-length-skip.html
>>         4 websocket/tests/frame-lengths.html
>>         4 websocket/tests/reload-crash.html
>>         4 websocket/tests/url-with-credential.html
>>         5 websocket/tests/bad-sub-protocol-empty.html
>>         5 websocket/tests/error-detect.html
>>         5 websocket/tests/handshake-error.html
>>         6 websocket/tests/handshake-challenge-randomness.html
>>         6 websocket/tests/null-character.html
>>         7 http/tests/security/cross-origin-css.html
>>         7 websocket/tests/bufferedAmount-after-close.html
>>         7 websocket/tests/close-on-unload.html
>>         7 websocket/tests/frame-length-overflow.html
>>         7 websocket/tests/handshake-fail-by-no-cr.html
>>         8 websocket/tests/multiple-connections.html
>>         9 websocket/tests/alert-in-event-handler.html
>>         9 websocket/tests/close-on-unload-and-force-gc.html
>>        10 websocket/tests/bad-handshake-crash.html
>>        11 websocket/tests/cross-origin.html
>>        12 http/tests/navigation/ping-same-origin.html
>>        13 websocket/tests/close-on-unload-reference-in-parent.html
>>        15 websocket/tests/close-on-navigate-new-location.html
>>        19 media/audio-controls-rendering.html
>>        50 compositing/geometry/limit-layer-bounds-transformed-overflow.html
>>
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