>ハッシュ値のコンテンションでなく、URLあたり256の制限に引っかかった時の問題かもしれません。
>> https://bugzilla.mozilla.org/show_bug.cgi?id=263590
>> Bug 263590 Disk cache hold only 256 objects (images) from one URL location (directory)
>これだと、半分くらいは常に表示されるがかなりの数が表示されず、
>バックボタンで戻って表示されないものが少なくなった後やリロードで、
>キャッシュにあればHTTP GETがでないはずの<IMG>に対してHTTP GETがでることの説明がつきます。
reference data
IE8.0 Average time: 588ms
Sleipnir2.8 Average time: 588ms
Netscape9.0 Average time: 538ms
TheWorld3.0 Average time: 481ms
Opera10.0 Average time: 234ms
Flock2.5 Average time: 229ms
Safari4.0 Average time: 53ms
Firefox3.5 Average time: 46ms
Lunascape6.0 Average time: 45ms
Chrome4.0 Average time: 24ms
SRWareIron3.0 Average time: 19ms
ChromePlus1.2 Average time: 18ms
reference data
IE8.0 Average time: 588ms
Sleipnir2.8 Average time: 588ms
Netscape9.0 Average time: 538ms
TheWorld3.0 Average time: 481ms
Opera10.0 Average time: 234ms
Flock2.5 Average time: 229ms
Safari4.0 Average time: 53ms
Firefox3.5 Average time: 46ms
Lunascape6.0 Average time: 45ms
Chrome4.0 Average time: 24ms
ChromePlus1.3 Average time: 19ms
SRWareIron3.0 Average time: 19ms
reference data
IE8.0 Average time: 588ms
Sleipnir2.8 Average time: 588ms
Netscape9.0 Average time: 538ms
TheWorld3.0 Average time: 481ms
Opera10.0 Average time: 234ms
Flock2.5 Average time: 229ms
Safari4.0 Average time: 53ms
Firefox3.5 Average time: 46ms
Lunascape6.0 Average time: 45ms
Chrome4.0 Average time: 24ms
ChromePlus1.3 Average time: 19ms
SRWareIron3.0 Average time: 19ms
jsTimeTest
Http://wd-testnet.world-direct.at/mozilla/dhtml/funo/jsTimeTest.htm
reference data
IE8.0 Average time: 588ms
Netscape9.0 Average time: 538ms
TheWorld3.0 Average time: 481ms
Sleipnir2.9+Gecko Average time: 435ms
Opera10.0 Average time: 234ms
Flock2.5 Average time: 229ms
Safari4.0 Average time: 53ms
Firefox3.5 Average time: 46ms
Lunascape6.0+Gecko Average time: 45ms
Chrome4.0 Average time: 24ms
ChromePlus1.3 Average time: 19ms
SRWareIron3.0 Average time: 19ms
似たような状況がキャッシュエントリー数の制限によって起こる
> https://bugzilla.mozilla.org/show_bug.cgi?id=321361
> Bug 321361 Cache corruption when viewing sites with several large images (simultaneous hash collision & cache dooming by disk cache size limit)
ディスク・キャッシュで8192個のオブジェクトしか保存できません
> Https://bugzilla.mozilla.org/show_bug.cgi?id=175600
> Bug 175600 Only 8192 objects can be stored in disk cache.
ストリングハッシュ関数のためキャッシュされない時がある
> Https://bugzilla.mozilla.org/show_bug.cgi?id=290032
> Bug 290032 Some files are never cached due to hash collisions which are quite common due to weak string hash function
似たような状況がキャッシュエントリー数の制限によって起こる
> Https://bugzilla.mozilla.org/show_bug.cgi?id=321361
> Bug 321361 Cache corruption when viewing sites with several large images (simultaneous hash collision & cache dooming by disk cache size limit)
ハッシュ値のコンテンションでなく、URLあたり256の制限
> Https://bugzilla.mozilla.org/show_bug.cgi?id=263590
> Bug 263590 Disk cache hold only 256 objects (images) from one URL location (directory)
重要度が critical 以上の bug
Http://bugzilla.mozilla.gr.jp/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_severity=blocker&bug_severity=critical
重要度が major 以上の bug
Http://bugzilla.mozilla.gr.jp/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_severity=blocker&bug_severity=critical&bug_severity=major
Bugzilla-jp は Mozilla 関連プロダクトの開発者やそのウェブサイトの運営者のためのコミュニティです。
Http://bugzilla.mozilla.gr.jp/
jsTimeTest
Http://wd-testnet.world-direct.at/mozilla/dhtml/funo/jsTimeTest.htm
reference data
IE8.0 Average time: 588ms
Netscape9.0 Average time: 538ms
TheWorld3.0 Average time: 481ms
Sleipnir2.9+Gecko Average time: 435ms
Opera10.0 Average time: 234ms
Flock2.5 Average time: 229ms
Safari4.0 Average time: 53ms
Firefox3.5 Average time: 46ms
Lunascape6.0+Gecko Average time: 45ms
Chrome4.0 Average time: 24ms
ChromePlus1.3 Average time: 19ms
SRWareIron3.0 Average time: 19ms
ディスク・キャッシュで8192個のオブジェクトしか保存できません
> Https://bugzilla.mozilla.org/show_bug.cgi?id=175600
> Bug 175600 Only 8192 objects can be stored in disk cache.
ストリングハッシュ関数のためキャッシュされない時がある
> Https://bugzilla.mozilla.org/show_bug.cgi?id=290032
> Bug 290032 Some files are never cached due to hash collisions which are quite common due to weak string hash function
似たような状況がキャッシュエントリー数の制限によって起こる
> Https://bugzilla.mozilla.org/show_bug.cgi?id=321361
> Bug 321361 Cache corruption when viewing sites with several large images (simultaneous hash collision & cache dooming by disk cache size limit)
ハッシュ値のコンテンションでなく、URLあたり256の制限
> Https://bugzilla.mozilla.org/show_bug.cgi?id=263590
> Bug 263590 Disk cache hold only 256 objects (images) from one URL location (directory)
重要度が critical 以上の bug
Http://bugzilla.mozilla.gr.jp/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_severity=blocker&bug_severity=critical
重要度が major 以上の bug
Http://bugzilla.mozilla.gr.jp/buglist.cgi?bug_status=NEW&bug_status=ASSIGNED&bug_status=REOPENED&bug_severity=blocker&bug_severity=critical&bug_severity=major
Bugzilla-jp は Mozilla 関連プロダクトの開発者やそのウェブサイトの運営者のためのコミュニティです。
Http://bugzilla.mozilla.gr.jp/
Http://wd-testnet.world-direct.at/mozilla/dhtml/funo/jsTimeTest.htm
reference data
IE8.0 Average time: 588ms
Sleipnir2.8 Average time: 588ms
Netscape9.0 Average time: 538ms
TheWorld3.0 Average time: 481ms
Opera10.0 Average time: 234ms
Flock2.5 Average time: 229ms
Safari4.0 Average time: 53ms
Firefox3.5 Average time: 46ms
Lunascape6.0 Average time: 45ms
Chrome4.0 Average time: 24ms
Opera10.50 Average time: 22ms
ChromePlus1.3 Average time: 19ms
SRWareIron3.0 Average time: 17ms
■https://bugzilla.mozilla.org/show_bug.cgi?id=443067
Radek 'sysKin' Czyz 2010-06-14 04:43:40 PDT
Verified fixed with hourly, changeset 7d3e81dd1018. Downloading a ~100 MB file
with 250 MB disk cache no longer advances cache "Storage in use" counter at all. Nice~
■https://bugzilla.mozilla.org/show_bug.cgi?id=443067
Radek 'sysKin' Czyz 2010-06-14 04:43:40 PDT
Verified fixed with hourly, changeset 7d3e81dd1018. Downloading a ~100 MB file
with 250 MB disk cache no longer advances cache "Storage in use" counter at all. Nice~
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