Hi all, Solaris has a rich number of tools/APIs in order to help to put together a Capacity Planning model of your servers/site:
- /proc, process statistics - Kernel Statistics: used by a majority of userland tools to obtain: 1. CPU/Cores utilization (Adrian Cockcroft might disagree with this [1], however still remains important to collect and follow along with your application's throughput and response time) 2. Memory utilization 3. Disk utilisation 4. Network utilization All these 4 metrics gives you an idea whats going on more or less with your system(s), having faith in kernel developers that wont play and will keep consistent the kstat interface over time (e.g.: if per cpu data changes you can say goodbye to your capacity plan). All these hand in hand with the throughput and response times of your applications are an important part of any capacity planning model. We have lots of tools in (Open)Solaris but we need to better integrate them to help anyone interested in building a Capacity Planning model for their Solaris systems. Couple of things missing: - corestat (should be part of the ON). - sysperfstat (combined CPU, Mem, Disk, Net utilization/saturation). If not integrated this, Sun should have a similar tool. - nicrec (important to measure the bandwidth capacity of your server) - say you run IP exclusive, each local zone having its own TCP/IP stack. How can you obtain from global zone the kstat numbers (currEstab,...) for each TCP/UDP module of all local zones ? - zone utilization: ready tools to measure the utilisation of each container deployed in the global zone. - is there any paper(s) related with all current tools and how they can be used to develop a simple Capacity Planning model ? For fun I combined some tools together and some I modified in order to help my life as a sysadmin [2]. http://www.nbl.fi/~nbl97/solaris/perf/index.html Comments ? thanks, Stefan [1] - Utilization is Virtually Useless as a Metric! Adrian Cockcroft – eBay Research Labs [2] - (SE Toolkit could have been easily used here, however not all sites allow installing extra software adding new kernel drivers) -- This message posted from opensolaris.org _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
