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Performance Testing the 7000 series, part 2 of 3

02 Apr 2009

I originally posted this at http://blogs.sun.com/brendan/entry/performance_testing_the_7000_series2.

With the release of the Sun Storage 7000 series there has been much interest in the products performance, which I've been demonstrating. In my previous post I listed 10 suggestions for performance testing – the big stuff you need to get right. The 10 suggestions are applicable to all perf testing on the 7000 series. Here I'll dive into the smaller details of max performance tuning, which may only be of interest if you'd like to see the system reach its limits.

The little stuff

The following is a tuning checklist for achieving maximum performance on the Sun Storage 7410, particularly for finding performance limits. Please excuse the brevity of some descriptions, this was originally written as an internal Sun document and has been released here in the interests of transparency. This kind of tuning is used during product development, to drive systems as fast as possible to identify and solve bottlenecks.

These can all be useful points to consider, but they do not apply to all workloads. I've seen a number of systems that were misconfigured with random tuning suggestions found on the Internet. Please understand what you are doing before making changes.

Sun Storage 7410 Hardware

Sun Storage 7410 Settings

Network

Clients

Client Workload

The Sun Storage 7410 doesn't need special tuning at all (no messing with /etc/system settings.) If it did, we'd consider that a bug we should fix. Indeed, this is part of what Fishworks is about – the expert tuning has already been done in our products. What there is left for the customer is simple and industry common: pick mirroring or double parity RAID, jumbo frames, no access time updates and tuning the filesystem record size. The clients require much, much more tuning and fussing when doing these performance tests.

In my next post, I'll show the simple tools I use to apply test workloads.