mrcharles
cba2a64d67
Everything for the ultix-streaming (VM 5111, pfv-tsys5) performance pass: full report + host audit results, staged/gated configs, guest prep + host one-shot + post-reboot-fix + netcheck lifecycle scripts, grow-root manual runbook, rolling tracking HUD, questions v1, and the gateway boot-race hardening units. Applied and verified live 2026-08-31; open work is tracked in Redmine project 55 as #601-#607. [#602] 💘 Generated with Crush Assisted-by: Crush:glm-5.2
35 lines
1.4 KiB
Plaintext
35 lines
1.4 KiB
Plaintext
# /etc/sysctl.d/60-ukrrs-vm.conf — ultix-streaming mixed-workload profile
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# Measured-before values and rationale: ~/optimize/REPORT.md §4.1.
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# Deliberately NOT touched: swappiness(60), overcommit(0), vfs_cache_pressure,
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# pid_max, somaxconn(4096), conntrack(262144), autogroup(1), page-cluster(3).
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# Predictable writeback under ETL bursts (bytes-based, RAM-size independent).
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# Night profile (ukrrs-daynight.sh) raises these to 2G/512M.
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vm.dirty_background_bytes = 268435456
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vm.dirty_bytes = 1073741824
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# Survive bursty reclaim when compiles+ETL hit at once. 768M post-upgrade.
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vm.min_free_kbytes = 393216
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# Postgres AIO / io_uring era; 9 harness daemons + LSPs watching many repos.
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fs.aio-max-nr = 1048576
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fs.inotify.max_user_watches = 1048576
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fs.inotify.max_user_instances = 512
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# 9 accounts x long-lived provider streams + tailscale + docker NAT.
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net.ipv4.ip_local_port_range = 10240 65535
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net.ipv4.tcp_tw_reuse = 1
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# LLM turns idle minutes between bursts on live sockets; large SSE/JSON.
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net.ipv4.tcp_slow_start_after_idle = 0
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net.core.rmem_max = 16777216
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net.core.wmem_max = 16777216
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net.ipv4.tcp_rmem = 4096 131072 16777216
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net.ipv4.tcp_wmem = 4096 65536 16777216
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net.core.netdev_max_backlog = 8192
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# BBR requires the module: staged modules-load.d/tcp_bbr.conf loads it.
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# If bbr is unavailable, comment the last two lines out (cubic is fine).
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net.ipv4.tcp_congestion_control = bbr
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net.core.default_qdisc = fq
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