This is a live blogging post from the International SharePoint Conference London 2012. So don’t expect well-written proza here.
Session by Steve Smith, Ben Curry & Bob Fox
Demo-heavy session
Troubleshooting & Good Practices
- Use perfmon & task manager to get an overview of the state of your environment (CPU, Memory, Disk)
- disk response times < 20 ms should be ok, more & you’re in trouble
- disk queue length should be =< 2
- use PAL to diagnose the performance of your environment
- never do performance testing on your production system that is already being used
- understanding the baseline is crucial
- monitor for 80% of the maximum you achieved before breaking it
- don’t underestimate the power of caching, but be aware of the issues
- huge performance gains going from 2 to 4 processors
- huge performance gains going from 8 to 12 GB memory
- monitor/test on different moments in the day
- disable the scanning of directories by antivirus - huge performance gains
- add custom counter sets to monitor other functions of your app (e.g. search)
- test for your requirements! e.g. 2000 users with 10% concurrent and page response <=3 secs