I have updated our Service Quality Metrics page with updated data through the end of January 2008, and the downloadable data and charts are also available in excel, open document, and google docs formats. The format of the charts and datasets has been truncated to a “rolling 7 months” format to remain concise and to increase the legibility of the charts. The full historical detail of this data to the daily level is still available in the end-of-2007 data files from my last SQM post.
January had a larger volume of Planned Outages than prior months due to the planned system outage on January 9th to expand our asset servers, and a larger number of Rolling Restarts than usual as we rolled out a very aggressive number of bugfixes. The rolling restarts, as announced, were on January 2nd, 17th and 31st. These outages, while regrettable, are a necessary part of our process of stabilizing Second Life and making it more available. Even with this large number of planned outages (our most aggressive deploy schedule to date), due to increased quality of testing and better automation of deploy processes, we still maintained less than a 1.3% planned outage total, which is significantly less than the 1.8% we were experiencing in March and April 2007. I am proud to point out that despite those planned outages, and the small number of intermittent login problems and website 503 errors, in January we had the lowest percentage of Unplanned Outages to date – around 0.15% !
We had a slight increase in overall viewer crashrates for January, from ~ 20% to nearly 21%, but testing of the newer RC and Firstlook (Windlight) viewers is showing some very encouraging trends in both improved crashrates and FPS performance, and we look forward to those statistics becoming the norm when we roll these features and fixes into the main production release client. If you have time, please download and help test these RC and Firstlook test clients – the more customer data we have on how these clients perform on your hardware and network configuration, the better we can fix and tune them before they hit prime-time, and please don’t forget to log any bugs you find in our Issue Tracker.
Average Viewer performance as measured by Frames Per Second increased slightly in January, and we look forward to some of the performance boosts built into the Firstlook viewer to help boost that even higher once it is released to mainstream as well. I’m curious to hear your perspective – are you seeing better or worse client performance with Windlight? From an aggregate statistical standpoint, it appears that your experience is better, so let’s hear your story.
The Percentage of time with regions below FPS thresholds also decreased nicely during January – not quite reaching our alltime low of October 2007, but coming close. I look forward to the work on Havok4 and Mono completing and helping drive this even lower in the near future.
If you have questions on these metrics please join me at my Office hours this Friday at 10 AM PST, and this week I am experimenting with holding a second office hrs at a time more suitable for our European customers on Thursday morning at 8 AM PST (i.e. 4 PM GMT), or as always IM me offline with specific questions. Thanks, and I hope to see you soon!