Is (baseline performance * # of cores) the only factor that determines the average performance of T type...
I always thought 1 vCPU of T2.nano is equal to 1 vCPU of T2.xlarge, because the only number I found about CPU on EC2 Instance Types documentation is number of CPUs.
However, after reading Tx unlimited mode example, I think I didn't understood the performance of Tx instances at all.
What I understood from that documentation is, a vCPU core in T3.nano is different to T3.micro's core in terms of baseline performance. And that baseline performance is related to CPU Credit in these ways:
When your vCPU utilization is exactly same to baseline performance, you don't lose or accumulate any CPU credit.
When your vCPU utilization is lower than baseline performance, you gain CPU Credit at rate of (baseline - CPU Utilization).
When your vCPU utilization is higher than baseline performance, you spend CPU Credit to make up additional utilization, and if you have no remaining CPU credit and Unlimited disabled you can't utilize your CPU over baseline performance.
So, to sum up what I've understood, in terms of CPU performance:
A Tx instance's peak performance is determined by number of cores.
For example t3.nano~t3.large which has 2 vCPU cores has same peak performance. (unless you disable Hyperthreading...?)
A Tx instance's average performance is determined by CPU credits earned per hour(=vCPU * baseline).
Is this correct?
amazon-web-services amazon-ec2
asked Nov 21 '18 at 6:43
ik1neik1ne
10016
add a comment |
I always thought 1 vCPU of T2.nano is equal to 1 vCPU of T2.xlarge, because the only number I found about CPU on EC2 Instance Types documentation is number of CPUs.
However, after reading Tx unlimited mode example, I think I didn't understood the performance of Tx instances at all.
What I understood from that documentation is, a vCPU core in T3.nano is different to T3.micro's core in terms of baseline performance. And that baseline performance is related to CPU Credit in these ways:
When your vCPU utilization is exactly same to baseline performance, you don't lose or accumulate any CPU credit.
When your vCPU utilization is lower than baseline performance, you gain CPU Credit at rate of (baseline - CPU Utilization).
When your vCPU utilization is higher than baseline performance, you spend CPU Credit to make up additional utilization, and if you have no remaining CPU credit and Unlimited disabled you can't utilize your CPU over baseline performance.
So, to sum up what I've understood, in terms of CPU performance:
A Tx instance's peak performance is determined by number of cores.
For example t3.nano~t3.large which has 2 vCPU cores has same peak performance. (unless you disable Hyperthreading...?)
A Tx instance's average performance is determined by CPU credits earned per hour(=vCPU * baseline).
Is this correct?
amazon-web-services amazon-ec2
asked Nov 21 '18 at 6:43
ik1neik1ne
10016
add a comment |
I always thought 1 vCPU of T2.nano is equal to 1 vCPU of T2.xlarge, because the only number I found about CPU on EC2 Instance Types documentation is number of CPUs.
However, after reading Tx unlimited mode example, I think I didn't understood the performance of Tx instances at all.
What I understood from that documentation is, a vCPU core in T3.nano is different to T3.micro's core in terms of baseline performance. And that baseline performance is related to CPU Credit in these ways:
When your vCPU utilization is exactly same to baseline performance, you don't lose or accumulate any CPU credit.
When your vCPU utilization is lower than baseline performance, you gain CPU Credit at rate of (baseline - CPU Utilization).
When your vCPU utilization is higher than baseline performance, you spend CPU Credit to make up additional utilization, and if you have no remaining CPU credit and Unlimited disabled you can't utilize your CPU over baseline performance.
So, to sum up what I've understood, in terms of CPU performance:
A Tx instance's peak performance is determined by number of cores.
For example t3.nano~t3.large which has 2 vCPU cores has same peak performance. (unless you disable Hyperthreading...?)
A Tx instance's average performance is determined by CPU credits earned per hour(=vCPU * baseline).
Is this correct?
amazon-web-services amazon-ec2
asked Nov 21 '18 at 6:43
ik1neik1ne
10016
I always thought 1 vCPU of T2.nano is equal to 1 vCPU of T2.xlarge, because the only number I found about CPU on EC2 Instance Types documentation is number of CPUs.
However, after reading Tx unlimited mode example, I think I didn't understood the performance of Tx instances at all.
What I understood from that documentation is, a vCPU core in T3.nano is different to T3.micro's core in terms of baseline performance. And that baseline performance is related to CPU Credit in these ways:
When your vCPU utilization is exactly same to baseline performance, you don't lose or accumulate any CPU credit.
When your vCPU utilization is lower than baseline performance, you gain CPU Credit at rate of (baseline - CPU Utilization).
When your vCPU utilization is higher than baseline performance, you spend CPU Credit to make up additional utilization, and if you have no remaining CPU credit and Unlimited disabled you can't utilize your CPU over baseline performance.
So, to sum up what I've understood, in terms of CPU performance:
A Tx instance's peak performance is determined by number of cores.
For example t3.nano~t3.large which has 2 vCPU cores has same peak performance. (unless you disable Hyperthreading...?)
A Tx instance's average performance is determined by CPU credits earned per hour(=vCPU * baseline).
Is this correct?
amazon-web-services amazon-ec2
amazon-web-services amazon-ec2
asked Nov 21 '18 at 6:43
ik1neik1ne
10016
asked Nov 21 '18 at 6:43
ik1neik1ne
10016
asked Nov 21 '18 at 6:43
ik1neik1ne
10016
asked Nov 21 '18 at 6:43
ik1neik1ne
10016
asked Nov 21 '18 at 6:43
ik1neik1ne
10016
10016
add a comment |
add a comment |
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