v1.0.19

What's Changed

• versions: bump versions for 1.0.18 release by @JakeHillion in #3031
• scx_lavd: Optimize CPU mask iteration with __builtin_ctzll by @bboymimi in #3016
• scx_utils, scx_lavd: Use a portable ctzll(). by @multics69 in #3032
• scx_bpfland: Reduce migration attempts when sticky tasks are enabled by @arighi in #3034
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3036
• chore(deps): update sched_ext/for-next kernel by @scx-ci-bot in #3037
• scx_lavd: Lower the verifier pressure. by @multics69 in #3033
• Add cpu.max Support for the SCX Scheduler by @multics69 in #3026
• scx_p2dq: Update to the new ATQ API by @etsal in #3038
• veristat: hack to increase buffer size by @JakeHillion in #3045
• ci: fix ubuntu runner deps action by @JakeHillion in #3050
• lavd/p2dq: disable 6.12 CI testing by @JakeHillion in #3048
• chore(deps): update sched_ext/for-next kernel by @scx-ci-bot in #3039
• chore(deps): update stable/6_12 kernel by @scx-ci-bot in #3041
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3040
• chore(deps): update stable/linux-rolling-stable kernel by @scx-ci-bot in #3042
• scx_lavd: Revise the use of per-CPU DSQ. by @multics69 in #3044
• scx_lavd: Addresses race conditions in LAVD's idle_total accounting by @bboymimi in #3052
• scx_lavd: Revise the time slice calculation when pinned_slice_ns is on. by @multics69 in #3053
• p2dq/mitosis/lavd/layered -- cli and logging productionization by @likewhatevs in #3017
• scx_layered: skip layer rotation when LLC/node preferences specified by @hodgesds in #3049
• scx_p2dq: Update interactive sticky and idle selection path by @hodgesds in #3054
• meson: replace with an error by @JakeHillion in #3056
• scx: drop openrc service by @sirlucjan in #3057
• scx_lavd: Tracking the number of pinned tasks on a CPU precisely. by @multics69 in #3055
• scx_lavd: Cancel an ATQ operation only when CPU.max is enabled. by @multics69 in #3051
• chore(deps): update sched_ext/for-next kernel by @scx-ci-bot in #3060
• scx_p2dq: Fix migration disabled handling by @hodgesds in #3058
• p2dq: Cleanup skeleton attachment by @hodgesds in #3063
• scx_lavd: perform task stealing in circular distance order. by @multics69 in #3061
• ci: drop vm for cargo test by @JakeHillion in #3066
• p2dq: Remove cpu_release by @hodgesds in #3064
• scxtop: Add perfetto trace analysis framework with systing support by @hodgesds in #3030
• scx_cargo: migrate BpfBuilder from scx_utils by @JakeHillion in #3065
• scx_lavd: Disable ops.cgroup_set_bandwidth() when no kernel support. by @multics69 in #3068
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3069
• scx_p2dq: Add DHQ support by @hodgesds in #3035
• scxtop: Add limit parameter to detect_outliers MCP tool by @hodgesds in #3071
• scx_lavd: Fix pick_most_loaded_dsq() when --per-cpu-dsq is given. by @multics69 in #3070
• lib: cgroup_bw: Fix the "rcu pointer" error in an old kernel (6.13). by @multics69 in #3073
• doc: Add pahole to Ubuntu instruction. by @multics69 in #3072
• scx_lavd: Move task_ctx to lavd.bpf.h from intf.h by @multics69 in #3074
• scx_p2dq: Fix high wakeup latency on idle systems with DHQ enabled by @hodgesds in #3076
• scxtop: Add topology-aware multi-ringbuffer support and fix perfetto … by @hodgesds in #3075
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3077
• chore(deps): update sched_ext/for-next kernel by @scx-ci-bot in #3078
• scx_bpfland: Use nr_cpu_ids as the actual CPU limit by @arighi in #3080
• kernel.config: Add CONFIG_KALLSYMS_ALL=y by @torvic9 in #3081
• scx_lavd: Don't try to migrate a task from non-migratable DSQs. by @multics69 in #3079
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3083
• scx_lavd: Turn on --pinned-slice-us option by default. by @multics69 in #3062
• scx_cosmos: Avoid unnecessary CPU wakeups by @arighi in #3086
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3089
• chore(deps): update stable/linux-rolling-stable kernel by @scx-ci-bot in #3091
• chore(deps): update stable/6_12 kernel by @scx-ci-bot in #3090
• document release process by @JakeHillion in #3095
• scx_lavd: Revise the performance criticality metric. by @multics69 in #3093
• scx_lavd: Revise the load-balancing metrics. by @multics69 in #3094
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3096
• scx_lavd: Minor tuning of deadline calculation for heavy loads. by @multics69 in #3097
• scx_lavd: Fix cpu_dsq_id typo in vtime comparison by @bboymimi in #3099
• lib: cgroup_bw: Fix a BPF verifier error on 6.18-rc6/clang-19/ARM64. by @multics69 in #3092
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3102
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3105
• chore(deps): update bpf/bpf-next kernel by @scx-ci-bot in #3106
• scx_lavd: Optimize layout of context structures for better use of cache. by @multics69 in #3107
• Fix some typos by @oxyzenQ in #3104
• scx_p2dq: Fix verifier on newer kernels with bpf_rcu_read_lock by @hodgesds in #3110
• scx_p2dq: Add PELT tracking by @hodgesds in #3111
• layered: Add a new NUMANode Matcher by @xerothermic in #3100
• chore(deps): update stable/6_12 kernel by @scx-ci-bot in #3117
• chore(deps): update sched_ext/for-next kernel by @scx-ci-bot in #3116
• chore(deps): update stable/linux-rolling-stable kernel by @scx-ci-bot in #3118
• scx_p2dq: Update default slice intervals by @hodgesds in #3122
• scx_p2dq: Add conservative wakeup preemption for latency-critical tasks by @hodgesds in #3123
• scxtop: Add query limits to get_process_timeline and get_cpu_timeline MCP server methods by @hodgesds in #3121

New Contributors

• @torvic9 made their first contribution in #3081
• @oxyzenQ made their first contribution in #3104

Full Changelog: v1.0.18...v1.0.19