nrep

Thanks! That's very helpful - I'll have a browse now and see how it performs. Do you have any AV software running? I've got McAfee AV Scan install (with lots of exclusions for DB stuff, etc...) and I wonder if that could be the culprit.

Any chance I could see your PHP.ini variables to see if I can drop that in and use the same settings? It looks like I can rule out MySQL as a cause of slowness from page rendering, so I assume it must be IIS/PHP:

OK, I'll give it a try - there is an option within plesk to provide all sites with their own app pool. I've temporarily disabled WinCache too, so I'll see how that goes. It was segfaulting for me too, but when I disabled the Opcode Caching and just used the File Caching features of WinCache it was fine. Zend OpCache works great.

Thanks AWS :). I'm using Zend OpCache as the Opcache and Wincache only for the rest of the optmisations (as recommended here: http://forums.iis.net/t/1201106.aspx?WinCache+1+3+5+release+on+SourceForge ) - should I just remove Wincache entirely? I've got those compression and output caching settings already, but all my sites are in 1 application pool as that's how Plesk has it configured. If I separate them in to individual pools will that give a performance boost? If so, I'll do that :).

Hello! I found this excellent forum via XenForo and thought I should sign up for some advice :). I run a fair number of sites on a Windows 2012R2 server, including a few XF forums. I've noticed that their page generation times (as seen in debug mode) are anything from 0.2-0.4s on most pages. This seems significantly higher than other sites, so I'm trying to improve things. The server is moderately powerful and CPU/Disk loads are nowhere near the limits, even at busy times: Dual Processor Hex Core Xeon 2620 32GB DDR4 RAID 1 - 2 x 400GB SSD Plesk 12 I'm currently getting MySQL specific advice on the XF forums (here), but I bet there is plenty I can do to tweak IIS at the same time. I'm running the PHP 5.5, MySQL 5.6 and have OpCache and WinCache enabled, both get very good hit rates and reduce loading times significantly. Is there anything else I can do to optimise load times? Perhaps I'm just at my limit and need more memory for the MySQL buffer pool, but I thought I'd ask to check anyway :).