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💭
高山仰之可极，深渊度之可测
💭
高山仰之可极，深渊度之可测
186 followers · 0 following
  • ByteDance
  • Beijing

Achievements

Achievement: Pair Extraordinairex2Achievement: StarstruckAchievement: Pull Sharkx2Achievement: Arctic Code Vault Contributor

Achievements

Achievement: Pair Extraordinairex2Achievement: StarstruckAchievement: Pull Sharkx2Achievement: Arctic Code Vault Contributor

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pizhenwei/README.md

Hi, I’m @pizhenwei

👀 I’m interested in the Linux operating system and lots of software. I've contributed to Linux, util-linux, QEMU, libvirt, libiscsi, spdk,tgt, Redis, bcc, atop.

  • I developed Valkey over RDMA, and the new feature has been merged into Valkey 8.0. This allows clients to communicate with the Valkey server via RDMA, potentially improving the QPS by approximately 250% and reducing latency by around 50%. I am also working on Valkey/Redis for vLLM Splitwise.
  • I developed virtio crypto kernel driver and QEMU backend, this allows guest to offload RSA/ECDSA to host. It's possible to let nginx(with openssl) improve the performance of HTTPS to ~200%. I started to maintain the cryptodev subsystem of QEMU since 2023-03.
  • I contributed lots of patches to atop, and recently I'm developing atophttpd which is a web style atop, this allows to access atop without login, it's also possible to get system level/process level status of many servers in batch.
  • I wrote irqtop/lsirq/blkpr commands(from util-linux), any suggestion/feedback is welcome!
  • I wrote hugetop command(from procps), any suggestion/feedback is welcome!
  • I wrote tcprtt/virtiostat/rdmaucma commands, improved runqslower/killsnoop/trace/funccount commands(from bcc), any suggestion/feedback is welcome!
  • I'm familiar with iSCSI/iSER/NVMe-OF, contributed patches to libiscsi/spdk/tgt/kernel nvme target, I also developed a user space NVMe-oF initiator libnvmf which makes QEMU block as faster as ~200K IOPS.
  • I have worked on the Virtio Over Fabrics specification, Linux driver demonstration code, and the Virtio-oF target. This work has stalled due to a lack of availability from the Virtio-Spec maintainers.
  • 📫 Contact me by pizhenwei@bytedance.com

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