_msw_

18 ms·

181.
by _msw_ 8y ago
I'd recommend browsing the code to find out more about the security module: https://github.com/opendistro-for-elasticsearch/security/blo...
182.
by _msw_ 8y ago
Hi, I work at AWS on compute services, but spent a lot of my life building Linux distros. For those of us with Linux distro building experience, this may be initially confusing. But calling a curated collection of software a "distro&
183.
by _msw_ 8y ago
Hi, I work at AWS on Compute services, but not directly on database services. I also work on broader open source topics at Amazon. Amazon DocumentDB was in development for a long time, and development started well before any of the license
184.
by _msw_ 8y ago
Hi, I'm from the core compute engineering part of AWS. Like most good stories, there's a beginning, middle, and end. We're in the middle now, and Fargate uses both regular EC2 instances and Firecracker in some cases.
185.
by _msw_ 8y ago
Hi! I'm from the EC2 engineering team. This is a super challenging problem for general purpose virtualization stacks. EC2 has been working to avoid any guest VM interruptions. With the Nitro hypervisor, there are no management tasks th
186.
by _msw_ 8y ago
Hi! I'm from the EC2 team. This is a great tool to help uncover if CPU and memory NUMA within a VM aligns to the physical host or not: https://www.cl.cam.ac.uk/research/srg/netos/projects/ipc-ben...
187.
by _msw_ 8y ago
Hi! I'm from the EC2 team. The fixed performance EC2 instances (in contrast to instances with burstable performance) all have dedicated physical CPU allocations, and 1:1 affinity from vCPU to the underlying CPU. Similarly, memory alloc
188.
by _msw_ 8y ago
I think there's an echo? https://news.ycombinator.com/item?id=18690666
189.
by _msw_ 8y ago
Disclosure: I'm part of the EC2 team at AWS We launched A1 instances with our Arm-Based AWS Graviton Processors to increase the selection of technology for our customers. It has nothing to do with demands of vendors, and everything to
190.
by _msw_ 8y ago
Hi, I work for Amazon Web Services, and I will risk responding to the first and only comment from a brand new account. Amazon does contribute back and does interact with open source communities. You can find information on AWS's open s
191.
by _msw_ 8y ago
We asked for the blog to be corrected to match the official recommendation from the engineering team (as it was presented in Jeff's blog at https://aws.amazon.com/blogs/aws/firecracker-lightweight-vir... ) The
192.
by _msw_ 8y ago
Disclosure: I work for AWS doing many things, including Outposts. Only if all of regional ("in the cloud") EC2 and EBS services had been re-platformed to run on Eucalyptus. A significant difference here is that the same infrastruc
193.
by _msw_ 8y ago
Hello from the EC2 engineering team! A vCPU on an A1 instance is a physical Arm core. There is no SMT (multi-threading) on A1 instances. In my experience on the platform, the performance is quite good for traditional cloud applications that
194.
by _msw_ 8y ago
Hi, a developer on the EC2 team here: the underlying CPU topology, in terms of which logical processors share L3 caches (i.e., which CPUs are part of the same CCX [1]) is provided to the instance's operating system through ACPI tables
195.
by _msw_ 8y ago
Using CPUID as a serializing instruction before RDTSC{,P} is a bad bad thing to do inside a virtual machine on Intel processors. CPUID will cause a VMEXIT, and the CPUID instruction will be emulated. The Intel Software Development Manual In
196.
by _msw_ 8y ago
As local NVMe storage does not have any interaction with the "classic" block device mapping APIs (the storage shows up as a PCI device, the same way that a GPU or FPGA does, and it doesn't matter in any way how the block devi
197.
by _msw_ 8y ago
Hi, an engineer on the EC2 team here. The "ephemeral" term is a legacy. Unfortunately it is part of the EC2 API for the block device mapping [1] of the "classic" instance store interfaces on the Xen platform. I don'
198.
by _msw_ 8y ago
Hi, I'm one of the engineers at Amazon working on EC2. You can also run get bare metal I3 instances by launching the "i3.metal" instance type. You don't need to wait for the Nitro hypervisor, you can go with no hyperviso
199.
by _msw_ 8y ago
Re-read what I wrote above. It covered both simultaneous and sequential sharing. Here is the part you are concerned about: instances do not simultaneously share cores with other customer instances via SMT .
200.
by _msw_ 8y ago
This guidance is primarily for customers that are running untrusted code within their EC2 instances. The "strong isolation of EC2 instances" refers to the properties of isolation provided by EC2's virtualization compared to p
201.
by _msw_ 8y ago
The bulletin is here: https://aws.amazon.com/security/security-bulletins/AWS-2018-...
202.
by _msw_ 8y ago
1 vCPU instances do not simultaneously share cores with other customer instances via SMT (Intel Hyper-Threading Technology). A core can be sequentially time sliced between customer instances when you use a fractional (m3.medium) or burst (T
203.
by _msw_ 8y ago
We discovered and quickly resolved an issue on z1d instances that prevented the CPU from running at a sustained 4.0 GHz frequency. We apologize for any inconvenience this may have caused.
204.
by _msw_ 8y ago
You'll need to apply some SSD specific methodology to correctly characterize their performance. Writing zeros to some SSDs will trigger special logic in their flash translation layer (FTL) that will prevent the writes from hitting the
205.
by _msw_ 8y ago
Hi, it's presenter in the video here. The documentation at https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-inst... will be updated soon with the same information.
206.
Announcing General Availability of Amazon EC2 Bare Metal Instances(aws.amazon.com)
2 points by _msw_ 8y ago|0 comments
207.
by _msw_ 9y ago
When the processor model varies for more recent generations of EC2 instances it is documented here: https://aws.amazon.com/ec2/instance-types/ Scroll down to get to the table that includes Physical Processor, Inte
208.
by _msw_ 9y ago
https://media.amazonwebservices.com/blog/2017/aurora-design-... """ These are each replicated 6 ways into Protection Groups (PGs) so that each PG consists of six 10 GB segments, organized across thr
209.
by _msw_ 9y ago
Hi, Amazon engineer on the EC2 service here. Please let me know if there's some material that calls a hyperthread a core. On our main product detail page for EC2 instances here: https://aws.amazon.com/ec2/instance-
210.
by _msw_ 9y ago
Could you send a list of instance IDs and timeframes where you saw this?

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