A presentation at QCon Plus by Holly Cummins
how to wor k in tech and not wreck the pl anet Holly Cummins IBM Garage @holly_cummins
we have a problem. #IBMGarage @holly_cummins
we have a problem. #IBMGarage @holly_cummins
the earth is getting warmer #IBMGarage @holly_cummins
the earth is getting warmer #IBMGarage @holly_cummins
warmer #IBMGarage @holly_cummins
uncomfortably warmer #IBMGarage @holly_cummins
uncomfortably warmer drought #IBMGarage @holly_cummins
uncomfortably warmer drought floods #IBMGarage @holly_cummins
uncomfortably warmer drought floods submersion #IBMGarage @holly_cummins
uncomfortably warmer drought floods submersion hurricanes #IBMGarage @holly_cummins
uncomfortably warmer drought floods submersion hurricanes fires #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
there’s a bug in our 2030 flood risk graph for Tokyo … isn’t there? #IBMGarage @holly_cummins
there’s a bug in our 2030 flood risk graph for Tokyo … isn’t there? #IBMGarage uh … no. @holly_cummins
technical debt #IBMGarage @holly_cummins
borrowing against the future #IBMGarage @holly_cummins
environmental debt #IBMGarage @holly_cummins
borrowing against the future #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
me? #IBMGarage @holly_cummins
me? you? #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
computers contribute to climate change #IBMGarage @holly_cummins
#IBMGarage data centres aviation 1-2% 2.5% @holly_cummins
#IBMGarage data centres aviation 1-2% 2.5% @holly_cummins
#IBMGarage data centres aviation 1-2% 2.5% @holly_cummins
Dr. Malice, IT person #IBMGarage @holly_cummins
waste #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
workload #IBMGarage @holly_cummins
runtime environment: virtual machine, physical machine or cluster workload #IBMGarage @holly_cummins
runtime environment: virtual machine, physical machine or cluster workload #IBMGarage @holly_cummins
utilisation elasticity #IBMGarage @holly_cummins
mainframes are super-efficient #IBMGarage @holly_cummins
mainframes are super-efficient #IBMGarage @holly_cummins
IBM zSeries 50% power consumption of x86 (30% more performance) #IBMGarage @holly_cummins
application #IBMGarage @holly_cummins
application control plane #IBMGarage @holly_cummins
application control plane #IBMGarage @holly_cummins manual replica count horizontal auto-scaling
! clusters are less elastic than applications manual replica count horizontal auto-scaling application control plane #IBMGarage @holly_cummins
! clusters are less elastic than applications application control plane ! every cluster has overhead #IBMGarage @holly_cummins
conway’s law is for clusters, too #IBMGarage @holly_cummins
namespaces #IBMGarage @holly_cummins
namespace isolation is not enough #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
dev prod staging that weird experiment #IBMGarage @holly_cummins
is this a win? lots of applications control plane #IBMGarage @holly_cummins
zombie workload #IBMGarage @holly_cummins
Hey boss, I created a Kubernetes cluster. #IBMGarage @holly_cummins
Hey boss, I created a Kubernetes cluster. I forgot it for 2 months. #IBMGarage @holly_cummins
Hey boss, I created a Kubernetes cluster. I forgot it for 2 months. … and it’s £1000 a month. #IBMGarage @holly_cummins
2017 survey 25% of 16,000 servers doing no useful work #IBMGarage @holly_cummins
2017 survey 25% of 16,000 servers doing no useful work “perhaps someone forgot to turn them off” #IBMGarage @holly_cummins
£ == #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
is there a solution? #IBMGarage @holly_cummins
pleading emails #IBMGarage @holly_cummins
let’s figure out what all these cloud workloads are, since I’m paying for them IT Department, UK Bank #IBMGarage @holly_cummins long meetings
let’s figure out what all these cloud workloads are, since I’m paying for them IT Department, UK Bank #IBMGarage @holly_cummins long meetings
tags #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
governance #IBMGarage @holly_cummins
make it easiest to do the right thing #IBMGarage @holly_cummins
make it easiest to do the right thing #IBMGarage @holly_cummins
finops #IBMGarage @holly_cummins
is the cloud zombie-proof? #IBMGarage @holly_cummins
is the cloud zombie-proof? #IBMGarage @holly_cummins
shut it down? but … what if I need this cluster later? #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
gitops #IBMGarage @holly_cummins
gitops (infrastructure as code) #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
spin it down #IBMGarage @holly_cummins
spin it down spin it up #IBMGarage @holly_cummins
spin it down spin it up #IBMGarage @holly_cummins
spin it down spin it up #IBMGarage @holly_cummins
spinning down clusters: the new lights off? #IBMGarage @holly_cummins
spinning down clusters: the new lights off? oh. it is. #IBMGarage @holly_cummins
shutting down instances out of hours reduced costs by 37% #IBMGarage (thanks for the statistic, @darkandnerdy) @holly_cummins
large bank, 2013 50% reduction in CPUs with a lease system #IBMGarage @holly_cummins
large bank, 2013 50% reduction in CPUs with a lease system #IBMGarage @holly_cummins
multicloud management #IBMGarage @holly_cummins
traffic monitoring #IBMGarage @holly_cummins
cautions #IBMGarage @holly_cummins
beware micro-optimisation theatre #IBMGarage @holly_cummins
is my travel sustainable? #IBMGarage @holly_cummins
is my travel sustainable? #IBMGarage @holly_cummins
fixing the wrong problem #IBMGarage @holly_cummins
but … every little helps… #IBMGarage @holly_cummins
think about the other things you’re not optimising #IBMGarage @holly_cummins
knowledge helps us focus on optimisations that matter #IBMGarage @holly_cummins
jevons’ paradox #IBMGarage @holly_cummins
the highway problem #IBMGarage @holly_cummins
what we imagine when we widen roads #IBMGarage @holly_cummins
what we get #IBMGarage @holly_cummins
unsolved problem == opportunity #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
system designers, support #IBMGarage @holly_cummins
system designers, support performance make it fast and lean better utilisation elasticity multi-tenancy de-zombification visibility disposability #IBMGarage @holly_cummins
#IBMGarage @holly_cummins
users … #IBMGarage @holly_cummins
users … up utilisation aim for elasticity limit sprawl de-zombification know what you’re using turn it off #IBMGarage @holly_cummins
Thank you. Questions? @holly_cummins IBM Garage #IBMGarage @holly_cummins
The world is changing. The past five years have been the warmest since records began. Human activity, including the IT industry, is driving worrying climate change. The cloud gives us dazzling computational possibilities, and … potentially uses a lot of energy.The beauty of the cloud is that it makes it easy to run code, virtualised and scheduled for efficiency… but it doesn’t provide any guarantee that what’s running is useful. As climate change accelerates, where do we, as engineers, fit in? Are we part of the problem or part of the solution? How do we balance the needs of people against the need of the planet? Or can they be aligned? This talk discusses some of the trade-offs and provides a roadmap to figuring out the right thing.
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