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slv-irq-tuning

스타87

포크15

업데이트2026년 5월 7일 14:06

NIC IRQ 1:1 pinning, NVMe queue limits, RPS/XPS, NIC ring buffer, sysctl (UDP/TCP buffers, swappiness, netdev_max_backlog), THP off, and ulimit nofile=1M for Solana / Shredstream nodes. Reboot is required when NVMe queue parameters change.

설치

Codex 또는 Claude로 설치 이 Prompt를 복사해 Codex, Claude 또는 다른 어시스턴트에 붙여 넣으면 Skill 페이지를 검토하고 설치를 진행할 수 있습니다.

Manus에서 실행

출처

ValidatorsDAO

ValidatorsDAO/slv

GitHub 저장소 열기 Creator 저장소 보기

다운로드

Manus에서 실행

SLV IRQ & Network Tuning Skill

Removes NIC IRQ imbalance and applies Solana-friendly kernel parameters. Runs as part of slv v init / slv r init after the SSH connection check, alongside SMT disable and performance boost.

What it applies

#	Item	Effect	Reboot
1	NIC IRQ 1:1 pinning	Distributes NET_RX softirq evenly across all CPUs	No
2	RPS/XPS enable	Software-level packet distribution	No
3	NIC ring buffer → 8192 (max)	Prevents packet drops during bursts	No
4	NVMe queues = ncores	Stops queues from being assigned to offline CPUs	Yes
5	sysctl: UDP/TCP buffers 128MB	Prevents drops on Shredstream / gRPC	No
6	sysctl: vm.swappiness → 1	Avoids swapping under memory pressure	No
7	sysctl: netdev_max_backlog → 50000	Prevents NIC → kernel queue overflow	No
8	THP (Transparent Huge Pages) → never	Avoids latency spikes	No
9	ulimit nofile → 1000000	Prevents fd exhaustion	No (new sessions only)

Related ansible playbooks

ansible/cmn/irq_tune.yml — applies items 1-9 above
ansible/cmn/files/vs2-irq-tune.sh — re-applies NIC IRQ pin + RPS/XPS + ring + THP at boot (systemd oneshot)
ansible/cmn/files/vs2-irq-tune.service — systemd unit for the above
ansible/cmn/files/99-vs2-solana.conf — sysctl parameters
ansible/cmn/files/99-vs2-solana-limits.conf — /etc/security/limits.d/
ansible/cmn/files/vs2-limits.conf — systemd DefaultLimitNOFILE drop-in

Run it

Normally invoked through cmn/optimize_node.yml together with SMT disable and CPU boost. Standalone:

ansible-playbook -i inventory.yml cmn/irq_tune.yml --limit <host>

Only sets need_reboot=true when NVMe queue parameters in GRUB had to change. The orchestrator reboots the host when needed.

Verification

Check	Expected
NIC IRQ queue N → CPU N	1:1 mapping
RPS (bond0/vlan)	`ffff` etc.
NIC ring buffer	RX: 8192, TX: 8192
NVMe IRQ on offline CPU	none
net.core.rmem_max / wmem_max	134217728
net.core.netdev_max_backlog	50000
vm.swappiness	1
THP	`[never]`
GRUB has `nvme.io_queues=N`	physical core count
`vs2-irq-tune.service`	active (exited)
irqbalance	inactive (disabled)

Rollback

sudo systemctl disable vs2-irq-tune.service
sudo rm /etc/systemd/system/vs2-irq-tune.service /usr/local/bin/vs2-irq-tune.sh
sudo systemctl enable irqbalance && sudo systemctl start irqbalance
sudo rm /etc/sysctl.d/99-vs2-solana.conf /etc/security/limits.d/99-vs2-solana.conf
sudo rm /etc/systemd/system.conf.d/vs2-limits.conf
sudo systemctl daemon-reexec
sudo sysctl --system
sudo sed -i 's/ nvme.io_queues=[0-9]* nvme.write_queues=[0-9]* nvme.poll_queues=[0-9]*//' /etc/default/grub
sudo update-grub
sudo rm /var/lib/slv/.irq_tuned
# reboot to drop NVMe GRUB params

이 저장소의 다른 Skills

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slv-hermes

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slv-nftables

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Deploy an OSS-clean nftables ruleset to any slv-managed host (Hermes, Pythnet RPC, validator, RPC, …). Inventory-driven — mgmt IPs, public ports, and per-port allow lists all come from `~/.slv/inventory.{network}.{role}.yml`, nothing is hardcoded. Atomic + rollback-safe (failed validation restores the previous config) and persistent across reboot. Used by `slv hermes firewall` and `slv pythnet firewall`; the same `cmn/deploy_nftables.yml` playbook works against any inventory.

2026-05-1887

slv-pythnet

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Run a self-hosted Pythnet RPC node — the application-specific Solana fork operated by Pyth's data providers. Pythnet RPC is what `slv-hermes` reads from for accumulator messages; running it locally completes a fully self-hosted Pyth price feed stack. Recipe handles disk mount, sysctl tuning, Solana 1.14 fork build (with cstdint workaround for modern GCC), identity gen, and systemd. Snapshot fetch + catch-up typically finishes in 10-20 minutes.

2026-05-1887

slv-jetstreamer

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Build, configure, and run anza-xyz/jetstreamer + ClickHouse on a dedicated analytics node. Streams Old Faithful CAR archives at multi-million-TPS into ClickHouse so historical Solana data is queryable via SQL (program_invocations, slot_status, pubkey_mentions). Includes hourly backfill timer and a rolling-window retention option.

2026-05-1287

slv-performance-boost

ValidatorsDAO/slv

Update the kernel (Ubuntu HWE 6.14+), set `amd_pstate=active` (AMD), and apply cpufreq governor=performance, EPP=performance, cpuidle disable, and `scaling_max_freq=cpuinfo_max_freq` so the CPU stays at maximum boost. AMD nodes on kernel < 6.14 require HWE install + reboot.

2026-05-0787

name	slv-irq-tuning
description	NIC IRQ 1:1 pinning, NVMe queue limits, RPS/XPS, NIC ring buffer, sysctl (UDP/TCP buffers, swappiness, netdev_max_backlog), THP off, and ulimit nofile=1M for Solana / Shredstream nodes. Reboot is required when NVMe queue parameters change.

SLV IRQ & Network Tuning Skill

Removes NIC IRQ imbalance and applies Solana-friendly kernel parameters. Runs as part of slv v init / slv r init after the SSH connection check, alongside SMT disable and performance boost.

What it applies

#	Item	Effect	Reboot
1	NIC IRQ 1:1 pinning	Distributes NET_RX softirq evenly across all CPUs	No
2	RPS/XPS enable	Software-level packet distribution	No
3	NIC ring buffer → 8192 (max)	Prevents packet drops during bursts	No
4	NVMe queues = ncores	Stops queues from being assigned to offline CPUs	Yes
5	sysctl: UDP/TCP buffers 128MB	Prevents drops on Shredstream / gRPC	No
6	sysctl: vm.swappiness → 1	Avoids swapping under memory pressure	No
7	sysctl: netdev_max_backlog → 50000	Prevents NIC → kernel queue overflow	No
8	THP (Transparent Huge Pages) → never	Avoids latency spikes	No
9	ulimit nofile → 1000000	Prevents fd exhaustion	No (new sessions only)

Related ansible playbooks

ansible/cmn/irq_tune.yml — applies items 1-9 above
ansible/cmn/files/vs2-irq-tune.sh — re-applies NIC IRQ pin + RPS/XPS + ring + THP at boot (systemd oneshot)
ansible/cmn/files/vs2-irq-tune.service — systemd unit for the above
ansible/cmn/files/99-vs2-solana.conf — sysctl parameters
ansible/cmn/files/99-vs2-solana-limits.conf — /etc/security/limits.d/
ansible/cmn/files/vs2-limits.conf — systemd DefaultLimitNOFILE drop-in

Run it

Normally invoked through cmn/optimize_node.yml together with SMT disable and CPU boost. Standalone:

ansible-playbook -i inventory.yml cmn/irq_tune.yml --limit <host>

Only sets need_reboot=true when NVMe queue parameters in GRUB had to change. The orchestrator reboots the host when needed.

Verification

Check	Expected
NIC IRQ queue N → CPU N	1:1 mapping
RPS (bond0/vlan)	`ffff` etc.
NIC ring buffer	RX: 8192, TX: 8192
NVMe IRQ on offline CPU	none
net.core.rmem_max / wmem_max	134217728
net.core.netdev_max_backlog	50000
vm.swappiness	1
THP	`[never]`
GRUB has `nvme.io_queues=N`	physical core count
`vs2-irq-tune.service`	active (exited)
irqbalance	inactive (disabled)

Rollback

sudo systemctl disable vs2-irq-tune.service
sudo rm /etc/systemd/system/vs2-irq-tune.service /usr/local/bin/vs2-irq-tune.sh
sudo systemctl enable irqbalance && sudo systemctl start irqbalance
sudo rm /etc/sysctl.d/99-vs2-solana.conf /etc/security/limits.d/99-vs2-solana.conf
sudo rm /etc/systemd/system.conf.d/vs2-limits.conf
sudo systemctl daemon-reexec
sudo sysctl --system
sudo sed -i 's/ nvme.io_queues=[0-9]* nvme.write_queues=[0-9]* nvme.poll_queues=[0-9]*//' /etc/default/grub
sudo update-grub
sudo rm /var/lib/slv/.irq_tuned
# reboot to drop NVMe GRUB params