Evangelos Marios Kogias

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Datacenters are the heart of our digital lives. Online applications, such as social-networking and e-commerce, run inside datacenters under strict Service Level Objectives for their tail latency. Tight latency SLOs are necessary for such services to remain ...

Remote Procedure Calls are widely used to connect datacenter applications with strict tail-latency service level objectives in the scale of µs. Existing solutions utilize streaming or datagram-based transport protocols for RPCs that impose overheads and li ...

Tail-latency tolerance (or just simply tail-tolerance) is the ability for a system to deliver a response with low-latency nearly all the time. It it typically expressed as a system metric (e.g., the 99th or 99.99th percentile latency) or as a service-level ...

We present LANCET, a self-correcting tool designed to measure the open-loop tail latency of µs-scale datacenter applications with high fan-in connection patterns. LANCET is self-correcting as it relies on online statistical tests to determine situations in ...

Programming languages and systems have failed to address the security implications of the increasingly frequent use of public libraries to construct modern software. Most languages provide tools and online repositories to publish, import, and use libraries ...

In today’s modern datacenters, the waiting time spent within a server’s queue is a major contributor of the end-to-end tail latency of μs-scale remote procedure calls. In traditional TCP, congestion control handles in-network congestion, while flow control ...

Software is going through a trust crisis. Privileged code is no longer trusted and processes insufficiently protect user code from unverified libraries. While usually treated separately, confidential computing and program compartmentalization are both symp ...

Serverless computing has seen rapid adoption due to its high scalability and flexible, pay-as-you-go billing model. In serverless, developers structure their services as a collection of functions, sporadically invoked by various events like clicks. High in ...

Cloud platform services must simultaneously be scalable, meet low tail latency service-level objectives, and be resilient to a combination of software, hardware, and network failures. Replication plays a fundamental role in meeting both the scalability and ...

Evangelos Marios Kogias

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Operating System and Network Co-Design for Latency-Critical Datacenter Applications

R2P2: Making RPCs first-class datacenter citizens

Tail-tolerance as a Systems Principle not a Metric

Lancet: A self-correcting Latency Measuring Tool

Enclosure: Language-Based Restriction of Untrusted Libraries

Flow control for Latency-Critical RPCs

Creating Trust by Abolishing Hierarchies

Benchmarking, Analysis, and Optimization of Serverless Function Snapshots

HovercRaft: Achieving Scalability and Fault-tolerance for microsecond-scale Datacenter Services

ZygOS: Achieving Low Tail Latency for Microsecond-scale Networked Tasks