hi
did you read that http://piwigo.org/releases/2.4.0#multiple_size ?
all sizes are cached into _data/i, only the first view take a while

it's not recommanded to unchecked all medium sizes because the full size will always be entirely loaded, even if resized by the browser

Last edited by mistic100 (2012-06-28 20:07:15)

Thanks for the excellent information as usual.  I had seen the information about the various size thumbnails, but I don't remember seeing the information about how or where those images were stored.

I am using lighttpd but the default settings that I've kept are below, and way more robust than I would ever need for my server (which typically has no more than a few simultaneous users).  It also wouldn't necessarily explain why things were fine until after the upgrade.

server.max-keep-alive-requests = 128
server.max-keep-alive-idle = 30
server.max-read-idle = 60
server.max-write-idle = 360

My Piwigo 'galleries' directory is actually a symbolic link to a directory on a faster drive than the one the web server root is on.  This may be having some impact since my thumbnails were in that directory, and already generated with Piwigo 2.3.x, but now the thumbnails are being created dynamically on a slower drive.  Things do seem much faster after the images are cached, but just to be safe I'm going to try relocating the _data directory to the faster drive, which I would have done anyway for other reasons.

Thanks again for all the good information.

Vern

The issue can definitely be marked resolved.  I was a bit surprised, but moving the _data directory to the faster drive definitely makes a very significant difference.  The slower drive is an older 250GB drive with I think an 8MB cache, versus a very new 2TB drive with a 64MB cache, both 7200rpm SATA drives.  It's still obvious when the thumbnails haven't been created, but the individual thumbnails load almost immediately, where previously you could watch each one loading slowly as if I was on a modem connection.  Now I'm thinking it might be worthwhile to move my database too.

Vern

I reinstalled apache 2.2.22 (configured with the worker MPM), pointed it to the same root, and the thumbnails that were not pre-generated did load a good bit faster.  I've grown to dislike apache over the years so I'm not all that motivated to go back to it.  I'll have to keep looking and see if I can figure out why there's suddenly a bottleneck with lighttpd.

Vern