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’m currently working on Virtio Over Fabrics specification, Linux driver demonstration code and Virtio-oF target.
• I’m currently working on Redis over RMDA, this allows clients to communicate with Redis server by RDMA, it's possible to improve the QPS to ~300%.
• 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.
• 📫 Contact me by pizhenwei@bytedance.com