Scrum and Supporting Your Existing Products | #2782 - Agile software development, patterns and practices for building Microsoft .NET applications.: "Paying the bug tax, sustaining team or not?
Obviously it depends on your exact situation but I’d always choose to spread bugs across all the teams over creating an SE team. If at all possible I’d try and add these to the backlog, prioritize them accordingly and give teams time to plan to fix them in the next sprint. This is less painful that dumping them on the team to be fixed immediately. Sometimes this is unavoidable, if for example you’ve committed to a particular service level agreement around fixing bugs.
The initial pain of doing this may be large but over time the bug tax will become predictable and teams will learnt to plan for it. In the long term there are other benefits as your feature teams will have a better understanding of customer pain points and better overall knowledge of the product code (a reduction in silos).
Another alternative, which just occurred to me but I’ve not seen tried. This would be to have each feature team run periodic SE sprints. Every N’th sprint would be devoted to SE work. This theoretically has some advantages over the two approaches especially if the SE sprints were staggered across teams so there was always at least one team working on SE. I’ve not tried this. If you have I’d like to hear from you."
Tuesday, May 12, 2009
Managing Bugs with Scrum | #2782 - Agile software development, patterns and practices for building Microsoft .NET applications.
Managing Bugs with Scrum | #2782 - Agile software development, patterns and practices for building Microsoft .NET applications.: "
The bug tax
There’s actually another completely different reason for minimizing the number of active bugs… Tax.
Having a lot of active bugs means that you have to manage them, triage them, track open/closed and fixed rates. All this takes time and effort and adds no value to the product. Imagine if you only had seven bugs to track? Two relating to work in the current sprint, these are being worked on by the team. The remaining five are to be prioritized and worked on in the next sprint. With seven active bugs you don’t need long triage meetings and reports!
The tax of dealing with bugs is greatly reduced and you can spend more time working on features. I worked on a project a while back where we ended up with a large number of bugs kicking around. Eventually things came to a head and we got the number down to something mush more manageable and it was amazing how much time we saved by not having to track these bugs not to mention time spent working with buggy features."
The bug tax
There’s actually another completely different reason for minimizing the number of active bugs… Tax.
Having a lot of active bugs means that you have to manage them, triage them, track open/closed and fixed rates. All this takes time and effort and adds no value to the product. Imagine if you only had seven bugs to track? Two relating to work in the current sprint, these are being worked on by the team. The remaining five are to be prioritized and worked on in the next sprint. With seven active bugs you don’t need long triage meetings and reports!
The tax of dealing with bugs is greatly reduced and you can spend more time working on features. I worked on a project a while back where we ended up with a large number of bugs kicking around. Eventually things came to a head and we got the number down to something mush more manageable and it was amazing how much time we saved by not having to track these bugs not to mention time spent working with buggy features."
AP: Law to curb Oregon's greenhouse gas emissions passes House | RePower Oregon 2009
AP: Law to curb Oregon's greenhouse gas emissions passes House | RePower Oregon 2009: "AP: Law to curb Oregon's greenhouse gas emissions passes House
by Jeff Barnard
05/08/2009
GRANTS PASS, Ore. -- The Oregon House on Friday passed a piece of the governor's global warming legislative package designed to reduce the greenhouse gas emissions from cars and trucks over the next decade through new standards for fuel, tires and replacement parts.
The vote in Salem was 32-28.
Inspired by steps taken by California, the bill gives the Oregon Environmental Quality Commission authority to develop standards reducing the carbon footprint of gasoline and diesel fuel by 10 percent by the year 2020, set mileage standards for tires, and require large and medium-size trucks to be more aerodynamic.
It also would require repair shops to make sure tires are inflated for the best fuel mileage, make available replacement parts that help reduce carbon emissions, and prohibit trucks from wasting fuel by long-term idling.
The bill now goes to the Senate."
by Jeff Barnard
05/08/2009
GRANTS PASS, Ore. -- The Oregon House on Friday passed a piece of the governor's global warming legislative package designed to reduce the greenhouse gas emissions from cars and trucks over the next decade through new standards for fuel, tires and replacement parts.
The vote in Salem was 32-28.
Inspired by steps taken by California, the bill gives the Oregon Environmental Quality Commission authority to develop standards reducing the carbon footprint of gasoline and diesel fuel by 10 percent by the year 2020, set mileage standards for tires, and require large and medium-size trucks to be more aerodynamic.
It also would require repair shops to make sure tires are inflated for the best fuel mileage, make available replacement parts that help reduce carbon emissions, and prohibit trucks from wasting fuel by long-term idling.
The bill now goes to the Senate."
Plug-In Hybrids: More Hype Than Hope?
Plug-In Hybrids: More Hype Than Hope?: "EV advocates are quick to note the Prius wasn't designed to be a plug-in hybrid, and in fact makes a lousy one. The biggest problem is the electric motor is too small, so the car relies more heavily on the gasoline engine. Cars designed from the ground up to be plug-in hybrids, like the plug-in Prius that Toyota is working on or the Saturn Vue plug-in – will almost certainly offer far better fuel efficiency."
GM says plug-in hybrid coming by early 2011 even if Saturn brand goes away
GM says plug-in hybrid coming by early 2011 even if Saturn brand goes away: "DETROIT — General Motors’ new product development chief says it will have a plug-in hybrid sport utility vehicle ready for fleet testing in early 2011.
The SUV was supposed to be a Saturn Vue Green Line, but GM has announced it will sell or phase out Saturn by the end of this year.
Vice Chairman Tom Stephens says GM will still produce the vehicle under one of its four remaining core brands — Chevrolet, Cadillac, Buick and GMC. He would not identify the vehicle or say when the hybrid would be in showrooms.
A plug-in hybrid can be recharged with a home outlet and be powered by electricity or a conventional engine.
Stephens says the new SUV will get about double the city gas mileage of any other conventional SUV."
The SUV was supposed to be a Saturn Vue Green Line, but GM has announced it will sell or phase out Saturn by the end of this year.
Vice Chairman Tom Stephens says GM will still produce the vehicle under one of its four remaining core brands — Chevrolet, Cadillac, Buick and GMC. He would not identify the vehicle or say when the hybrid would be in showrooms.
A plug-in hybrid can be recharged with a home outlet and be powered by electricity or a conventional engine.
Stephens says the new SUV will get about double the city gas mileage of any other conventional SUV."
Monday, May 4, 2009
Solar refuelling stations for electric cars
Solar refuelling stations for electric cars: "Solar energy and electric vehicles are an inevitable partnership that is one more step to reducing our dependence on foreign oil."
Chery Launching Five eco-friendly cars in 2010 - Beyond Fossil Fuel
Chery Launching Five eco-friendly cars in 2010 - Beyond Fossil Fuel: "Chinese automaker Chery is on the move! In last week’s Shanghai Motor Show, Chery displayed a few of their electric concept cars: the Tiggo 3EV and Riich M1 EV. Both vehicles are powered by advanced lithium phosphate batteries. In addition to these two electric cars Chery displayed hybrid versions of their A3 mall card and Futwin Coupe II. A few months earlier Chery introduced the S18 electric hatchback, which was its first electric car ever.
That is quite a few electric cars for one manufacturer. Chery reports they have plans for more EV cars. Yin Tongyue, the company director says all five of these cars will be in production by 2010. Chery plans to offer electric vehicles in small sedan, minicar, midsize sedan, MPV and SUV. That is bold! But of course, you are talking about the Chinese."
That is quite a few electric cars for one manufacturer. Chery reports they have plans for more EV cars. Yin Tongyue, the company director says all five of these cars will be in production by 2010. Chery plans to offer electric vehicles in small sedan, minicar, midsize sedan, MPV and SUV. That is bold! But of course, you are talking about the Chinese."
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