Onur Filiz
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onur.filiz.dev
Onur Filiz
@onur.filiz.dev
Principal Software Engineer @Microsoft.com CoreOS. I work on #Azure, #Windows, #Linux, #virtualization, containers, storage, networking. Ex-AWS and Nortel. Science, #demoscene, books and gaming. Also https://linkedin.com/in/ofiliz. Opinions my own.
This enables secure and efficient workload orchestration in right-sized microVMs.

Watch @markrussinovich.bsky.social explain it all in "Inside Azure Innovations" (@ 15:45):
ignite.microsoft.com/en-US/sessio... [3/3]
Inside Azure Innovations with Mark Russinovich
Join Mark Russinovich, CTO and Technical Fellow of Microsoft Azure. Mark will take you on a tour of the latest innovations in Azure architecture and explain how Azure enables intelligent, modern, and ...
ignite.microsoft.com
December 2, 2025 at 1:47 AM
direct access to hardware accelerated devices such as GPUs for full performance.

In Direct Virtualization, the parent orchestrator VM can ask the hypervisor to take its CPU, memory and device resources, and create child VMs with those resources to run untrusted workloads it directly controls. [2/3]
December 2, 2025 at 1:47 AM
...your code in a child VM on top of a nested hypervisor, which requires maintenance and comes with significant performance penalties.
With DV, you can now run child VMs inside your VM using the Azure hypervisor, with full performance parity and device acceleration. No nested hypervisor required.
November 25, 2025 at 10:24 PM
WSL runs microVMs, same tech that was initially developed for running hw-virtualized containers (aka Hyper-V “Xenon” containers) on Windows. It exposes a minimal modern (“born in the cloud”) virtual motherboard, plus state mirroring between the two kernels to keep them in-sync. Really cool stuff.
November 25, 2025 at 1:01 AM
There is a "Skype dial pad" feature in the Teams app (both Windows and iOS), but it is just a link to calling.web.skype.com.
August 27, 2025 at 8:10 PM
Skype the brand is dead, but Skype the product is still alive; it just merged into Teams. All accounts, contacts, chats, credits etc. are still available in Teams.
Moving from Skype to Microsoft Teams Free - Microsoft Support
support.microsoft.com
August 27, 2025 at 7:45 PM
I left Amazon because I hated the politics and bureaucracy there, but I was still proud of the work we did. Now, this, just makes me feel sick.
April 8, 2025 at 4:51 AM
...and now this. Official Trump Store on Amazon. There is no limit to how deep Amazon will kiss his ass if it gives them an advantage.
www.amazon.com/stores/Trump...
Trump Store
Welcome to Trump Store, the official retailer of the Trump Organization. We are thrilled to offer the very latest in Trump branded merchandise, apparel, headwear, gifts and much more - all made in Ame...
www.amazon.com
April 8, 2025 at 4:12 AM
So you’ve reached the bargaining stage. I’ve been stuck in depression since January.
March 1, 2025 at 6:19 PM
XPS isn’t dead. It is just being rebranded as “Max”, starting with the next generation in mid-2025.
January 7, 2025 at 1:38 AM
That's the beauty of incremental improvements. I enjoy the simplicity, the ROI, the craft, as much as those shiny big projects. We overstate impact of "new". Impact is putting in that extra effort in everyday work, making the right engineering trade-offs, wherever you can find it. 2 MiBs at a time.
December 3, 2024 at 9:36 PM
On a typical Windows client, savings amount to ~2MiB of nonpaged pool. Not much. When you install the Windows 11 24H2 update, you won't notice it. On scale, for 1.5 billion eligible Windows clients, these 20 lines save 3 PiBs (~2^51) of memory globally. And I've done it 3 times already this year.
December 3, 2024 at 9:36 PM
Simply growing it would "fix the bug". But at Microsoft's scale, every line of code impacts tens, hundreds of millions of people. One-size-fits-all, doesn't. So, I wrote a heuristic that adjusts the buffer size dynamically based on the OS SKU, processor count, memory size, etc. 20 lines in an hour.
December 3, 2024 at 9:36 PM
The hypervisor runs everywhere nowadays, from Xbox to Azure, ranging from hw with a few cores and MBs of memory, to giants in Azure with 100s of cores and TBs of memory. It also runs on Windows 10/11, where it's the foundation for virtualization-based security. The buffer needed to grow for Azure.
December 3, 2024 at 9:36 PM