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[[Water]] images broken

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Re: [Wikitech-l] [MediaWiki-CVS]...

Steve Summit

15 Sep 2007 15 Sep '07

9:45 p.m.

The first two images on the [[Water]] page are broken. Experimentation reveals that they're only broken at their specifically-scaled sizes (280 and 150 px, respectively). So obviously it's a caching problem. What's that trick for forcing all a page's content to be explicitly regenerated? &action=flush or something?

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Thomas Dalton

15 Sep 15 Sep

10:27 p.m.

On 15/09/2007, Steve Summit <scs(a)eskimo.com> wrote:

The first two images on the [[Water]] page are broken. Experimentation reveals that they're only broken at their specifically-scaled sizes (280 and 150 px, respectively). So obviously it's a caching problem. What's that trick for forcing all a page's content to be explicitly regenerated? &action=flush or something?

action=purge

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Thomas Dalton

10:30 p.m.

On 15/09/2007, Thomas Dalton <thomas.dalton(a)gmail.com> wrote:

On 15/09/2007, Steve Summit <scs(a)eskimo.com> wrote:

The first two images on the [[Water]] page are broken. Experimentation reveals that they're only broken at their specifically-scaled sizes (280 and 150 px, respectively). So obviously it's a caching problem. What's that trick for forcing all a page's content to be explicitly regenerated? &action=flush or something?

action=purge

And you're right, it worked. I purged both images, and it's working now.

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Steve Summit

10:49 p.m.

Thomas Dalton wrote:

On 15/09/2007, Steve Summit <scs(a)eskimo.com> wrote:

The first two images on the [[Water]] page are broken... What's that trick for forcing all a page's content to be explicitly regenerated?

action=purge

Thanks. Next question: is there something wrong with SVG rendering or scaling at the moment? I've noticed that both (a) Image:Heme.svg, as seen on the [[Hemoglobin]] page, and (b) Image:NFPA_704.svg, as used in Template:NFPA 704 and seen on many, many chemical pages, are both broken. action=purge doesn't seem to be helping for these.

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Platonides

16 Sep 16 Sep

1:30 p.m.

Steve Summit wrote:

Thomas Dalton wrote:

On 15/09/2007, Steve Summit wrote:

The first two images on the [[Water]] page are broken... What's that trick for forcing all a page's content to be explicitly regenerated?

action=purge

Thanks. Next question: is there something wrong with SVG rendering or scaling at the moment? I've noticed that both (a) Image:Heme.svg, as seen on the [[Hemoglobin]] page, and (b) Image:NFPA_704.svg, as used in Template:NFPA 704 and seen on many, many chemical pages, are both broken. action=purge doesn't seem to be helping for these.

Purged. These images are on commons, so you should purge them on the commons page. Purging on en: worked, though. Thomas Dalton:

I'm not sure how long images are cached for - hopefully not too long and the problem will fix itself once the caches expire.

AFAIK, they're cached 'forever, until the page is purged or the image deleted/overwritten

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Steve Summit

2:15 p.m.

Platonides wrote:

These images are on commons, so you should purge them on the commons page.

Can someone with server access do the find -size 0 thing, on wikipedia and/or commons, as appropriate?

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Steve Summit

15 Sep 15 Sep

11 p.m.

Thomas Dalton wrote:

On 15/09/2007, Steve Summit <scs(a)eskimo.com> wrote:

The first two images on the [[Water]] page are broken... What's that trick for forcing all a page's content to be explicitly regenerated?

action=purge

Thanks. And something seems to have fixed those images. But I'm not sure it was action=purge. (Did you try it, Thomas? I didn't; the images were fixed by the time I received your reply.) I've noticed that [[Image:Tabak P9290021.JPG]], as seen in [[Nicotine]], is broken, and action=purge doesn't fix it. Clearly there's something badly messed up in an image cache somewhere. If I've encountered this many in a few minutes, there have got to be lots more.

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Steve Summit

11:14 p.m.

I wrote:

I've noticed that [[Image:Tabak P9290021.JPG]], as seen in [[Nicotine]], is broken, and action=purge doesn't fix it.

Aha. You've got to purge the image page itself (e.g. <http:// en.wikipedia.org/w/index.php?title=Image:Tabak_P9290021.JPG &action=purge>), not the article page containing the image.

Clearly there's something badly messed up in an image cache somewhere. If I've encountered this many in a few minutes, there have got to be lots more.

Speculation on the IRC channel is that a disk filled up, and that there are therefore gobs of 0-sized thumbnails littering the cache.

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Steve Summit

11:18 p.m.

I wrote:

Next question: is there something wrong with SVG rendering or scaling at the moment? I've noticed that both (a) Image:Heme.svg, as seen on the [[Hemoglobin]] page, and (b) Image:NFPA_704.svg, as used in Template:NFPA 704 and seen on many, many chemical pages, are both broken. action=purge doesn't seem to be helping for these.

Never mind. Action=purge on [[Hemoglobin]] didn't help, but doing it on Image:Heme.svg and Image:NFPA_704.svg themselves surely did. Case closed. (Except for the N,000 other images that probably need the same treatment...)

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Thomas Dalton

11:26 p.m.

On 16/09/2007, Steve Summit <scs(a)eskimo.com> wrote:

I wrote:

I've noticed that [[Image:Tabak P9290021.JPG]], as seen in [[Nicotine]], is broken, and action=purge doesn't fix it.

Aha. You've got to purge the image page itself (e.g. <http:// en.wikipedia.org/w/index.php?title=Image:Tabak_P9290021.JPG &action=purge>), not the article page containing the image.

Ah yes, I learned that bit by trial and error. ;)

Clearly there's something badly messed up in an image cache somewhere. If I've encountered this many in a few minutes, there have got to be lots more.

Speculation on the IRC channel is that a disk filled up, and that there are therefore gobs of 0-sized thumbnails littering the cache.

Makes sense. It could mean they are still being created too...

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Thomas Dalton

11:21 p.m.

On 16/09/2007, Steve Summit <scs(a)eskimo.com> wrote:

Thomas Dalton wrote:

On 15/09/2007, Steve Summit <scs(a)eskimo.com> wrote:

The first two images on the [[Water]] page are broken... What's that trick for forcing all a page's content to be explicitly regenerated?

action=purge

Thanks. And something seems to have fixed those images. But I'm not sure it was action=purge. (Did you try it, Thomas? I didn't; the images were fixed by the time I received your reply.) I've noticed that [[Image:Tabak P9290021.JPG]], as seen in [[Nicotine]], is broken, and action=purge doesn't fix it.

Yes, I purged them - I sent an email a few minutes after the first saying so, it must not have arrived yet. I just purged the nicotine patch image, and it worked. To purge you have to use the full url, with index.php, the short form doesn't work, as far as I know.

Clearly there's something badly messed up in an image cache somewhere. If I've encountered this many in a few minutes, there have got to be lots more.

Yes. I don't know how to track them down, though. I'm not sure how long images are cached for - hopefully not too long and the problem will fix itself once the caches expire. If you find any more just go to: http://en.wikipedia.org/w/index.php?title=Image:XYZ&action=purge

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Steve Summit

11:32 p.m.

Thomas Dalton wrote:

On 16/09/2007, Steve Summit <scs(a)eskimo.com> wrote:

Clearly there's something badly messed up in an image cache somewhere. If I've encountered this many in a few minutes, there have got to be lots more.

Yes. I don't know how to track them down, though.

Me, I'd use something like find -size 0 -print | xargs rm but that clearly requires a level of access I don't have. :-)

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Thomas Dalton

11:54 p.m.

Me, I'd use something like find -size 0 -print | xargs rm but that clearly requires a level of access I don't have. :-)

Ah, well, yes, shell access would make the job much easier...

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Simetrical

16 Sep 16 Sep

2:17 a.m.

On 9/15/07, Thomas Dalton <thomas.dalton(a)gmail.com> wrote:

To purge you have to use the full url, with index.php, the short form doesn't work, as far as I know.

They should work identically. Of course, since the short form doesn't have a query string, it's ?action=purge you need to append, not &action=purge.

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Thomas Dalton

9:54 a.m.

On 16/09/2007, Simetrical <Simetrical+wikilist(a)gmail.com> wrote:

On 9/15/07, Thomas Dalton <thomas.dalton(a)gmail.com> wrote:

To purge you have to use the full url, with index.php, the short form doesn't work, as far as I know.

They should work identically. Of course, since the short form doesn't have a query string, it's ?action=purge you need to append, not &action=purge.

Ok, it must not have worked when I tried it that way for a different reason... the mystery deepens...

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Platonides
Simetrical
Steve Summit
Thomas Dalton