Forum is becoming UNUSABLE - something must be done!

The problem has lessened consideraby since I started this thread. I rarely get the 'Bad Gateway' errors these days, and I doubt that the forums have become less busy. My thanks to those who have made the changes that have improved things.

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Large delta printer [miscsolutions.wordpress.com], Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

Where is this site hosted?

Maybe move this site to [osuosl.org]
And upgrade/convert to phpBB 3.1 while at it?

The problems are back. I am finding the forum v-e-r-y slow and getting frequent 502 Bad Gateway errors.

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Large delta printer [miscsolutions.wordpress.com], Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].

... I've emailed Adrian but didn't get an answer yet

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Viktor
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Aufruf zum Projekt "Müll-freie Meere" - [reprap.org]
Call for the project "garbage-free seas" - [reprap.org]

Hi All. I don't administer the reprap.org server; other kind volunteers do that now that I am retired. I have just e-mailed them and we'll do our best to fix it speedily.

It should be better now. I attach the diagnosis and cure from one of the admins.

Best wishes

Adrian

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I took a look. I noticed very high disk I/O on the /data drive.
Some aggressive web-spiders were crawling the rss feeds and individual posts,
causing them to be re-cached, and bloating the size of the on-disk cache.

The cached files are stored in a directory hierarchy that's based on the
32-character md5 hash of the key, split into 3-character segments, so
each cache hit(or miss) would cause over 13 stat() calls to hit the disk.

I patched the forums/htdocs/includes/cache/file.php code to split the
hash into 3 segments that are 3, 3, and 26 characters long, so that the cache
directory hierarchy is 3 directories deep, instead of 11.

Blocking the worst of the web web-spiders combined with the shallower cache-tree
has brought the disk I/O back down to sane levels, and forums are loading faster.