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Scheduler resource instrumentation improvements #103

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Merged
machshev merged 1 commit into from
Feb 24, 2026
Merged

Scheduler resource instrumentation improvements #103

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14 changes: 10 additions & 4 deletions src/dvsim/instrumentation/resources.py
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Original file line number Diff line number Diff line change
Expand Up @@ -33,13 +33,15 @@ class ResourceSchedulerFragment(SchedulerFragment):
"""Instrumented metrics about the scheduler reported by the `ResourceInstrumentation`."""

# Scheduler / DVSim process overhead
scheduler_rss_bytes: int | None = None
scheduler_max_rss_bytes: int | None = None
scheduler_avg_rss_bytes: int | None = None
scheduler_vms_bytes: int | None = None
scheduler_cpu_percent: float | None = None
scheduler_cpu_time: float | None = None

# System-wide metrics
sys_rss_bytes: int | None = None
sys_max_rss_bytes: int | None = None
sys_avg_rss_bytes: int | None = None
sys_swap_used_bytes: int | None = None
sys_cpu_percent: float | None = None
sys_cpu_per_core: list[float] | None = None
Expand Down Expand Up @@ -138,6 +140,7 @@ def __init__(self, sample_interval: float = 0.5) -> None:
self._scheduler_sum_rss = 0
self._scheduler_max_rss = 0
self._scheduler_sum_vms = 0
self._sys_sum_rss = 0
self._sys_max_rss = 0
self._sys_max_swap = 0

Expand Down Expand Up @@ -193,6 +196,7 @@ def _sampling_loop(self) -> None:
# Update system-wide metrics
self._sys_max_swap = max(self._sys_max_swap, psutil.swap_memory().used)
self._sys_max_rss = max(self._sys_max_rss, sys_rss)
self._sys_sum_rss += sys_rss
self._sys_sum_cpu += sys_cpu
if self._num_cores is not None:
self._sys_sum_cpu_per_core = [
Expand Down Expand Up @@ -250,11 +254,13 @@ def build_report_fragments(self) -> InstrumentationFragments | None:
vms_bytes = None

scheduler_frag = ResourceSchedulerFragment(
scheduler_rss_bytes=self._scheduler_max_rss,
scheduler_avg_rss_bytes=self._scheduler_sum_rss / self._sample_count,
scheduler_max_rss_bytes=self._scheduler_max_rss,
scheduler_vms_bytes=vms_bytes,
scheduler_cpu_percent=self._scheduler_sum_cpu / self._sample_count,
scheduler_cpu_time=scheduler_cpu_time,
sys_rss_bytes=self._sys_max_rss,
sys_max_rss_bytes=self._sys_max_rss,
sys_avg_rss_bytes=self._sys_sum_rss / self._sample_count,
sys_cpu_percent=self._sys_sum_cpu / self._sample_count,
sys_cpu_per_core=sys_cpu_per_core,
sys_swap_used_bytes=self._sys_max_swap,
Expand Down
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