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Cache handling is making NAS systems slow

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Author	Message
Tony Wood	Sunday 01 June 2003 6:01:55 am A couple of issues really. The '/' in content settings is ignored when you set in '[ContentSettings]' So if you put CacheDir=/var/cache/sitename/content the system removes the first '/'. Normally this would not be a problem, but when you main site is on an external RAID array you want all your disk intensive files to to local say in /var/cache. ln -s is a way round this problem and works, but really it should be a ini command. Another thing that is noticable is that content is the only element addressed by CachDir, really this ini setting should affect 'ini' 'template' and 'template-block'. I also notice that template-block is only created once and not for every server instance of eZpublish. This means that template block can only exist on a single datasource. btw Database on muliple servers work well, its just the cache files that slows things down a bit. Comments please Tony Tony Wood : twitter.com/tonywood Vision with Technology Experts in eZ Publish consulting & development Power to the Editor! Free eZ Training : http://www.VisionWT.com/training eZ Future Podcast : http://www.VisionWT.com/eZ-Future
Bård Farstad	Monday 02 June 2003 4:11:00 am Tony, I agree on your comments. All these issues should be fixed. eZ publish should be able to have the var/ folder placed anywhere on the filesystem. Cache block should automatically use the siteaccess to create cache files, so they would be unique pr siteaccess. --bård Documentation: http://ez.no/doc
Tony Wood	Monday 02 June 2003 4:21:07 am Thanks, Will these make it into 3.1? I hope so :) as NFS is around 100 times slower than direct access and GFS is too pricey. tia tony Tony Wood : twitter.com/tonywood Vision with Technology Experts in eZ Publish consulting & development Power to the Editor! Free eZ Training : http://www.VisionWT.com/training eZ Future Podcast : http://www.VisionWT.com/eZ-Future
Bård Farstad	Tuesday 03 June 2003 2:58:41 am I've just commited a fix which enables CacheDir to be set absolute. All cache directories are then created in the desired folder, except ini cache. There is a problem with circular dependencies if we want to read from the ini file where the ini cache is beeing saved. --bård Documentation: http://ez.no/doc
Tony Wood	Tuesday 03 June 2003 3:40:13 am Thanks :) Does this mean that template-block will also be created in the CacheDir? Will this mean that if two machines are connected to a central data store on NAS the cache files will be created on both machine in /var/cache. (or the like). Meaning that template, template-block etc are created locally on both machines. Tony Wood : twitter.com/tonywood Vision with Technology Experts in eZ Publish consulting & development Power to the Editor! Free eZ Training : http://www.VisionWT.com/training eZ Future Podcast : http://www.VisionWT.com/eZ-Future
Bård Farstad	Tuesday 03 June 2003 5:01:47 am Yes, template cache files are created locally ( if that's your setup ). This means a bit more overhead in cache creation, but the speed improvements in cached views is worth it. We use a rsynct script at ez.no which syncs the files between the machines ( uploaded files etc.. ). With this setup you don't need to use NFS and friends. Mabye that's a solution for your NFS speed issues? --bård Documentation: http://ez.no/doc
Tony Wood	Tuesday 03 June 2003 5:24:46 am Thanks, Let me have a go with the new code and see where it gets me, I have moved NFS from 100 to a 1000 network card so is running a little faster. I'll take a look at rsync too, I need something pretty generic so it can work easily on all sites. I'll report back. Thanks again tony Tony Wood : twitter.com/tonywood Vision with Technology Experts in eZ Publish consulting & development Power to the Editor! Free eZ Training : http://www.VisionWT.com/training eZ Future Podcast : http://www.VisionWT.com/eZ-Future
Gabriel Ambuehl	Tuesday 03 June 2003 10:15:10 am Just how is GFS pricey if there's even a GPL edition of it, OpenGFS? Visit http://triligon.org
Tony Wood	Tuesday 03 June 2003 11:12:32 am Its more than i can justify, here an article on it http://www.hoise.com/primeur/02/articles/monthly/AE-PR-12-02-39.html Tony Wood : twitter.com/tonywood Vision with Technology Experts in eZ Publish consulting & development Power to the Editor! Free eZ Training : http://www.VisionWT.com/training eZ Future Podcast : http://www.VisionWT.com/eZ-Future