Performance Tuning 归档 - 夜莺博客

标签：Performance Tuning

TCP Tuning for High Bandwidth-Delay Product Links

TCP Tuning for High Bandwidth-Delay Product Links

Tune Linux TCP for long fat networks: calculate the bandwidth-delay product, set socket buffers and window scaling, verify with iperf3 before blaming

admin admin 2026-09-24
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Ceph OSD Recovery and Backfill Throttling

Ceph OSD Recovery and Backfill Throttling

Tune Ceph backfill and recovery throttles so an OSD replacement or cluster expansion does not saturate client I/O. Parameters, safe steps, monitoring.

admin admin 2026-09-24
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bpftrace One-Liners for Production Linux Debugging

bpftrace One-Liners for Production Linux Debugging

bpftrace one-liners for production Linux: which process opens which file, which syscall is slow, read-size histograms and the BTF prerequisites.

admin admin 2026-09-12
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Linux Network Tuning with sysctl: TCP Buffers and Backlogs

Linux Network Tuning with sysctl: TCP Buffers and Backlogs

Tune Linux networking with sysctl: TCP buffers sized to the bandwidth-delay product, listen backlog, conntrack limits, validation method and rollback

admin admin 2026-09-10
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