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import threading
import time
import warnings
from typing import TYPE_CHECKING, Any
from trackio import context_vars
if TYPE_CHECKING:
from trackio.run import Run
psutil: Any = None
PSUTIL_AVAILABLE = False
_psutil_lock = threading.Lock()
def _ensure_psutil():
global PSUTIL_AVAILABLE, psutil
if PSUTIL_AVAILABLE:
return psutil
with _psutil_lock:
if PSUTIL_AVAILABLE:
return psutil
try:
psutil = importlib.import_module("psutil")
PSUTIL_AVAILABLE = True
return psutil
except ImportError:
raise ImportError(
"psutil is required for CPU and RAM monitoring. "
"Install it with: pip install psutil"
)
def cpu_available() -> bool:
"""
Check if CPU and RAM monitoring is available.
Returns True if psutil is installed.
"""
try:
_ensure_psutil()
return True
except ImportError:
return False
except Exception:
return False
def collect_cpu_metrics(
prev_disk_counters: Any = None,
prev_net_counters: Any = None,
elapsed: float | None = None,
include_static: bool = True,
) -> dict:
"""
Collect CPU, RAM, disk, network, and sensor metrics using psutil.
Args:
prev_disk_counters: Previous disk I/O counters for computing read/write rates.
If None, only cumulative values are reported.
prev_net_counters: Previous network I/O counters for computing send/recv rates.
If None, only cumulative values are reported.
elapsed: Seconds since prev_disk_counters and prev_net_counters were captured.
If None or non-positive, cumulative values are reported instead of rates.
include_static: Whether to include mostly static metrics such as CPU
frequency and core counts.
Returns:
Dictionary of system metrics.
"""
if not PSUTIL_AVAILABLE:
try:
_ensure_psutil()
except ImportError:
return {}
metrics = {}
try:
per_core = psutil.cpu_percent(interval=0.1, percpu=True)
for i, pct in enumerate(per_core):
metrics[f"cpu/{i}/utilization"] = pct
if per_core:
metrics["cpu/utilization"] = sum(per_core) / len(per_core)
except Exception:
pass
if include_static:
try:
cpu_freq = psutil.cpu_freq()
if cpu_freq:
metrics["cpu/frequency"] = cpu_freq.current
if cpu_freq.max > 0:
metrics["cpu/frequency_max"] = cpu_freq.max
except Exception:
pass
try:
cpu_count_logical = psutil.cpu_count(logical=True)
if cpu_count_logical is not None:
metrics["cpu/count_logical"] = cpu_count_logical
cpu_count_physical = psutil.cpu_count(logical=False)
if cpu_count_physical is not None:
metrics["cpu/count_physical"] = cpu_count_physical
except Exception:
pass
try:
mem = psutil.virtual_memory()
metrics["memory/used"] = mem.used / (1024**3)
metrics["memory/total"] = mem.total / (1024**3)
metrics["memory/available"] = mem.available / (1024**3)
metrics["memory/percent"] = mem.percent
except Exception:
pass
try:
swap = psutil.swap_memory()
metrics["swap/used"] = swap.used / (1024**3)
metrics["swap/total"] = swap.total / (1024**3)
metrics["swap/percent"] = swap.percent
except Exception:
pass
try:
disk = psutil.disk_io_counters()
if disk is not None:
if prev_disk_counters is not None and elapsed and elapsed > 0:
metrics["disk/read_mb_per_sec"] = (
(disk.read_bytes - prev_disk_counters.read_bytes)
/ elapsed
/ (1024**2)
)
metrics["disk/write_mb_per_sec"] = (
(disk.write_bytes - prev_disk_counters.write_bytes)
/ elapsed
/ (1024**2)
)
metrics["disk/read_iops"] = (
disk.read_count - prev_disk_counters.read_count
) / elapsed
metrics["disk/write_iops"] = (
disk.write_count - prev_disk_counters.write_count
) / elapsed
else:
metrics["disk/read_bytes"] = disk.read_bytes
metrics["disk/write_bytes"] = disk.write_bytes
except Exception:
pass
try:
net = psutil.net_io_counters()
if net is not None:
if prev_net_counters is not None and elapsed and elapsed > 0:
metrics["network/sent_mb_per_sec"] = (
(net.bytes_sent - prev_net_counters.bytes_sent)
/ elapsed
/ (1024**2)
)
metrics["network/recv_mb_per_sec"] = (
(net.bytes_recv - prev_net_counters.bytes_recv)
/ elapsed
/ (1024**2)
)
else:
metrics["network/sent_bytes"] = net.bytes_sent
metrics["network/recv_bytes"] = net.bytes_recv
except Exception:
pass
try:
sensors = psutil.sensors_temperatures()
if sensors:
for chip_name, entries in sensors.items():
for i, entry in enumerate(entries):
label = (
entry.label.strip()
if entry.label and entry.label.strip()
else f"{chip_name}_{i}"
)
metrics[f"temp/{label}"] = entry.current
except Exception:
pass
try:
battery = psutil.sensors_battery()
if battery is not None:
metrics["battery/percent"] = battery.percent
metrics["battery/power_plugged"] = int(battery.power_plugged)
except Exception:
pass
return metrics
class CpuMonitor:
def __init__(self, run: "Run", interval: float = 10.0):
self._run = run
self._interval = interval
self._stop_flag = threading.Event()
self._thread: "threading.Thread | None" = None
self._last_disk_counters: Any = None
self._last_net_counters: Any = None
self._last_time: float | None = None
self._include_static_next = True
def start(self):
if not PSUTIL_AVAILABLE:
try:
_ensure_psutil()
except ImportError:
warnings.warn(
"auto_log_cpu=True but psutil is not installed. "
"CPU and RAM logging disabled. Install with: pip install psutil"
)
return
self._thread = threading.Thread(target=self._monitor_loop, daemon=True)
self._thread.start()
def stop(self):
self._stop_flag.set()
if self._thread is not None:
self._thread.join(timeout=2.0)
def _monitor_loop(self):
try:
self._last_disk_counters = psutil.disk_io_counters()
except Exception:
pass
try:
self._last_net_counters = psutil.net_io_counters()
except Exception:
pass
self._last_time = time.monotonic()
while not self._stop_flag.is_set():
self._stop_flag.wait(timeout=self._interval)
if self._stop_flag.is_set():
break
try:
now = time.monotonic()
elapsed = now - self._last_time if self._last_time is not None else None
metrics = collect_cpu_metrics(
prev_disk_counters=self._last_disk_counters,
prev_net_counters=self._last_net_counters,
elapsed=elapsed,
include_static=self._include_static_next,
)
self._include_static_next = False
try:
self._last_disk_counters = psutil.disk_io_counters()
except Exception:
self._last_disk_counters = None
try:
self._last_net_counters = psutil.net_io_counters()
except Exception:
self._last_net_counters = None
self._last_time = now
if metrics:
self._run.log_system(metrics)
except Exception:
pass
def log_cpu(run: "Run | None" = None) -> dict:
"""
Log CPU, RAM, disk, network, and sensor metrics to the current or specified run
as system metrics.
Args:
run: Optional Run instance. If None, uses current run from context.
Returns:
dict: The system metrics that were logged.
Example:
```python
import trackio
run = trackio.init(project="my-project")
trackio.log({"loss": 0.5})
trackio.log_cpu()
```
"""
if run is None:
run = context_vars.current_run.get()
if run is None:
raise RuntimeError("Call trackio.init() before trackio.log_cpu().")
try:
_ensure_psutil()
except ImportError:
warnings.warn(
"trackio.log_cpu() requires psutil. Install it with: pip install trackio[cpu]"
)
return {}
metrics = collect_cpu_metrics()
if metrics:
run.log_system(metrics)
return metrics
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