I may be a bit late to the “time to interactive” agent sandbox party, but I wanted to make sure our hypervisor absolutely MOGGED everyone else. 10x faster than Firecracker and 425x faster than Cloud Hypervisor. agx.so is the best agent infra platform, period.
Once the sandbox providers figure out performance and scale, the next hills to climb will be: - agent/harness integration (ie. Shelley from @exe.dev) - agent to agent communication (ie. side channels between your sandboxes) - agent tracing integrations (think raindrop AI)
I think that workload portability will be the next big AI sandbox unblocker. With the ridiculous wave of sandbox compute being deployed right now, having the ability to move long-running workloads between nodes (spot instances!) or even clouds is *the* silver bullet for both availability and cost.
At Google Cloud Next this week if folks want to chat about virtualization, filesystems, live migration, and eBPF!
In-kernel filesystem are going to destroy the FUSE ecosystem. Bringing your custom logic into the VFS directly is absolutely incredible for performance and latency.
Who’s going to FOSDEM in Brussels next week? DM me if you'd like to hang out, talk about high performance cloud infrastructure, live migration, eBPF, Spot Instances - or all of the above! Looking forward to meeting all the cool OSS folks!
Who’s going to re:invent in Las Vegas next week? DM me if you'd like to hang out, talk about high performance cloud infrastructure, live migration, eBPF, Spot Instances - or all of the above! Can’t wait to see everyone! #aws #reinvent #reinvent2025
Nice that one can use network-bypass techniques without crazy vendor frameworks or kernel mods. Even cooler that one can recreate iptables functionality like this for faster inter-host networking
Shivansh Vij@shivanshvij.com · 9mo agoPeople aren’t ready for the next blog post from @loopholelabs.io If you thought the XDP post was interesting (linked below) this next one is going to blow your mind. Here’s a hint: What do chess engines and NAT’s have in common?
Great post by @alex.sorlie.io
Loophole Labs@loopholelabs.io · 9mo agoAn eBPF Loophole: Using XDP for Egress Traffic XDP is Linux's fastest packet processor but only handles incoming traffic. We found a loophole in how the kernel determines packet direction to make it work for outgoing traffic too! Blog post with details 👇 loopholelabs.io/blog/xdp-for...
We finally decided to write out how we use XDP in our network plane for live network migrations and more specifically to process outgoing packets! This is the first in a series of promised deep dives into how Loophole's live migration tech works!
Loophole Labs@loopholelabs.io · 9mo agoAn eBPF Loophole: Using XDP for Egress Traffic XDP is Linux's fastest packet processor but only handles incoming traffic. We found a loophole in how the kernel determines packet direction to make it work for outgoing traffic too! Blog post with details 👇 loopholelabs.io/blog/xdp-for...
🙋♂️ kccncna2025.sched.com/event/27Fd6/...
KubeCon + CloudNativeCon North America 2025: Spark on Kubernetes, a Practical Guide -...
View more about this event at KubeCon + CloudNativeCon North America 2025
kccncna2025.sched.com
Shivansh Vij@shivanshvij.com · 10mo agoWho is coming to KubeCon NA 2025 in Atlanta?
I'm getting more and more excited about drop-in, frictionless infrastructure. Lots going on in observability, containers, cloud compute, etc. eBPF is part of it, so is monkey patching. Some interesting ones: @loopholelabs.io, @polarsignals.com, junctionlabs.io ﹩, subtrace.dev ﹩
Request: Topics for the @loopholelabs.io Blog I want to start posting some short-form blogs that go through the technical challenges of building @loopholelabs.io and how we’ve solved them. If folks have requests for content they’d like covered now’s the time to ask! Topics I have so far 👇
Just got to Malta for the company getaway! It’s really convenient that these EU outlets have a whole THREE USB-C outlets! So great.
If Asahi Linux ends up supporting M4 chips this year, I think adoption in datacenters will go through the roof
I think the most excited thing about this blog post is the one we get to publish next - a deep dive into how Architect works under the hood. There were so many “impossible” problems we had to solve to make Architect a reality - and now that we have I’m having a blast explaining how we did it.
Loophole Labs@loopholelabs.io · 2y agoNew blog post! Run any application on Spot Instances with zero downtime and 75%+ cost savings - and no code changes required. Architect eliminates the reliability concerns that previously made Spot Instances impractical for production workloads. ⬇️ Link in comments ⬇️
@evanphx.dev this looks pretty cool loopholelabs.io/blog/rethink... built on OSS live migration tech that forked firecracker and related virtualization technology github.com/loopholelabs...
Rethinking Spot Instances - How We Solved the Preemption Problem
Run any application on Spot Instances with zero downtime and 75%+ cost savings - no code changes required. Architect eliminates the reliability concerns that previously made Spot Instances impractical...
loopholelabs.io
This looks super cool. Get up to 75% cost-savings of using spot instances without data loss or interruption. My mental model of what this does is the equivalent of vSphere vMotion, but for spot instance workloads running in the Cloud.
Shivansh Vij@shivanshvij.com · 2y agoI think the most excited thing about this blog post is the one we get to publish next - a deep dive into how Architect works under the hood. There were so many “impossible” problems we had to solve to make Architect a reality - and now that we have I’m having a blast explaining how we did it.
I think the most excited thing about this blog post is the one we get to publish next - a deep dive into how Architect works under the hood. There were so many “impossible” problems we had to solve to make Architect a reality - and now that we have I’m having a blast explaining how we did it.
Loophole Labs@loopholelabs.io · 2y agoNew blog post! Run any application on Spot Instances with zero downtime and 75%+ cost savings - and no code changes required. Architect eliminates the reliability concerns that previously made Spot Instances impractical for production workloads. ⬇️ Link in comments ⬇️
Want to see it in action? Read the post here: loopholelabs.io/blog/rethink...
Rethinking Spot Instances - How We Solved the Preemption Problem
Run any application on Spot Instances with zero downtime and 75%+ cost savings - no code changes required. Architect eliminates the reliability concerns that previously made Spot Instances impractical...
loopholelabs.io
New blog post! Run any application on Spot Instances with zero downtime and 75%+ cost savings - and no code changes required. Architect eliminates the reliability concerns that previously made Spot Instances impractical for production workloads. ⬇️ Link in comments ⬇️
Hard won #eBPF lesson: bpf_redirect doesn’t work between interfaces where the sender has an xdp program loaded in native mode and the other has one loaded in generic mode (only with some cloud/os pairs)
