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The Admin site can instruct a specified Gateway node (or even the Admin site node) to dynamically trace its own service processes for online performance profiling and/or trouble shooting. Dynamic tracing tools based on SystemTap, Linux eBPF, or alike will be used so it can be safely used online, with real production traffic.
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We’re also collaborating with the Linux eBPF community to share our experience, and extend the core eBPF technology in ways that make features of xdpd obsolete. In evaluating the performance of Unimog, our main concern is efficiency: that is, the resources consumed for load balancing relative to the resources used for customer-visible services.
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autotest-spdk-master-vs-dpdk-v20.08; Build Pool. Build pool is Running. Machine Arch OS Running task Status; GP1: Linux (amd64) Fedora 32 (5.7.17-200.fc32.x86_64 ...
TiNA is composed of virtual network packet broker, flow analyzer, high speed packet dump system, connection performance analyzer, and 3D-based network management system. T-CAP is an open architecture of a server-switch type hardware. We will review how to implement those TiNA functions based on open source (e.g., DPDK, Spark Streaming) and T-CAP. Sysadmin vs. dev ops Marian Marinov. DoS and DDoS mitigations with eBPF, XDP and DPDK Marian Marinov. Challenges with high density networks Marian Marinov ... Facebook 宣布开源 Katran,一个可扩展的网络负载均衡器,并概述了其工具来自动化网络工作流程。 Facebook 建立了 Katran 开发一个转发平台,为后端服务器提供更多的灵活性,同时改善网络均衡。
Figure 1. A comparison of the cBPF vs. eBPF machines. Classic BPF (cBPF), the legacy version, consisted of a 32-bit wide accumulator, a 32-bit wide 'X' register which could also be used within instructions, and 16 32-bit registers which are used as a scratch memory store. This obviously led to some key restrictions.
Sep 27, 2019 · DPDK, on the other hand, could meet the performance requirements, but our goal was to protect services that run locally and DPDK doesn’t provide a way to forward packets to the local stack. So, the first PacketShield prototype was done using the netmap framework. Eߣ B† B÷ Bò Bó B‚„webmB‡ B… S€g £â M›[email protected]»‹S«„ I©fS¬ åM»ŒS«„ T®kS¬‚ #M» S«„ S»kS¬ƒ £Åì © I©f 2*×±ƒ [email protected] ... Special XDP eBPF cases¶ With XDP the eBPF program gets "direct" access to the raw/unstructured packet-data. Thus, eBPF uses some "direct access" instruction for accessing this data, but for safety this need to pass the in-kernel validator. Walking the packet data, requires writing the boundary checks in a specialized manor. Like:
Linux 5 introduced io_uring and really locked down and expanded eBPF; The Full Monty: A Theory of UNIX Servers. We must mix and match: Many event sources, of multiple types and possibly various triggering mechanisms (edge- vs level-triggered): Socket descriptors, pipes This year around 1,600 attendees descended on the Hyatt Regency in San Francisco for the twelfth annual QCon. Software engineers, architects, and project managers from a wide range of industries ...
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