Initial commit

.gitignore

@@ -0,0 +1,10 @@
+# Python-generated files
+__pycache__/
+*.py[oc]
+build/
+dist/
+wheels/
+*.egg-info
+
+# Virtual environments
+.venv

.python-version

@@ -0,0 +1 @@
+3.14

main.py

@@ -0,0 +1,85 @@
+from dataclasses import dataclass
+import dataclasses
+from decimal import Decimal
+from functools import reduce
+from typing import NamedTuple, Optional
+from line_profiler import profile
+import psutil
+
+@dataclass
+class ProcessSwapInfo:
+    pid: int
+    name: str
+    swap: int
+
+@dataclass
+class ProcessSwapGroup:
+    name: str
+    processes: list[ProcessSwapInfo] = dataclasses.field(default_factory=list)
+    
+    @property
+    def total_swap(self) -> int:
+        return sum(map(lambda x: x.swap, self.processes))
+
+type ProcessName = str
+
+def convert_bytes_to_mb(value: int) -> Decimal:
+    return Decimal(value) / (1024 * 1024)
+
+@profile
+def get_process_swap_usage() -> None:
+    print(f"{'PID':>6} {'Name':<25} {'Swap (MB)':>10}")
+    print("-" * 45)
+    
+    total_swap_used = 0
+
+    swap_used: list[ProcessSwapInfo] = []
+
+    for proc in psutil.process_iter(['pid', 'name', 'memory_full_info']):
+        try:
+            with proc.oneshot():
+                memory_info: Optional[NamedTuple] = proc.info['memory_full_info']
+                swap: int = getattr(memory_info, "swap", 0)
+                if swap > 0:
+                    swap_used.append(ProcessSwapInfo(proc.pid, proc.name(), swap))
+                    total_swap_used += swap
+        except (psutil.NoSuchProcess, psutil.AccessDenied):
+            continue
+    
+    swap_used.sort(key=lambda x: x.swap)
+
+    def _add_to_group(groups: dict[ProcessName, ProcessSwapGroup], process: ProcessSwapInfo) -> dict[ProcessName, ProcessSwapGroup]:
+        if process.name not in groups:
+            groups[process.name] = ProcessSwapGroup(process.name)
+        groups[process.name].processes.append(process)
+        return groups
+
+    swap_used_groups: list[ProcessSwapGroup] = sorted(
+        (item for item in reduce(_add_to_group, swap_used, dict()).values()),
+        key=lambda x: x.total_swap
+    )
+
+    for group in swap_used_groups:
+        print(f"{group.name:<32} {convert_bytes_to_mb(group.total_swap):10.2f}")
+        for item in group.processes:
+            print(f"{item.pid:>32} {convert_bytes_to_mb(item.swap):10.2f}")
+        print()
+
+    print("-" * 45)
+    print(f"{'Total swap used by processes:':<32} {convert_bytes_to_mb(total_swap_used):10.2f} MB")
+
+def show_swap_summary() -> None:
+    swap = psutil.swap_memory()
+    print("\n=== Swap Summary ===")
+    print(f"Total: {convert_bytes_to_mb(swap.total):.2f} MB")
+    print(f"Used:  {convert_bytes_to_mb(swap.used):.2f} MB")
+    print(f"Free:  {convert_bytes_to_mb(swap.free):.2f} MB")
+    print(f"Percent Used: {swap.percent:.1f}%")
+
+def main() -> None:
+    print("=== Process Swap Usage ===")
+    get_process_swap_usage()
+    show_swap_summary()
+
+if __name__ == "__main__":
+    main()

profile.txt

@@ -0,0 +1,51 @@
+Wrote profile results to 'main.py.lprof'
+Timer unit: 1e-06 s
+
+Total time: 0.465667 s
+File: main.py
+Function: get_process_swap_usage at line 29
+
+Line #      Hits         Time  Per Hit   % Time  Line Contents
+==============================================================
+    29                                           @profile
+    30                                           def get_process_swap_usage() -> None:
+    31         1          4.7      4.7      0.0      print(f"{'PID':>6} {'Name':<25} {'Swap (MB)':>10}")
+    32         1          1.9      1.9      0.0      print("-" * 45)
+    33                                               
+    34         1          1.5      1.5      0.0      total_swap_used = 0
+    35                                           
+    36         1          1.5      1.5      0.0      swap_used: list[ProcessSwapInfo] = []
+    37                                           
+    38       476     428514.1    900.2     92.0      for proc in psutil.process_iter(['pid', 'name', 'memory_full_info']):
+    39       475        894.0      1.9      0.2          try:
+    40       950      19757.6     20.8      4.2              with proc.oneshot():
+    41       475        878.1      1.8      0.2                  mem_info = proc.info['memory_full_info']
+    42       475        942.4      2.0      0.2                  s: int = getattr(mem_info, "swap", 0)
+    43       475        880.2      1.9      0.2                  if s > 0:
+    44       167      10376.3     62.1      2.2                      swap_used.append(ProcessSwapInfo(proc.pid, proc.name(), s))
+    45       167        320.2      1.9      0.1                      total_swap_used += s
+    46                                                   except (psutil.NoSuchProcess, psutil.AccessDenied):
+    47                                                       continue
+    48                                               
+    49         1         97.1     97.1      0.0      swap_used.sort(key=lambda x: x.swap)
+    50                                           
+    51         1          2.4      2.4      0.0      def add_to_group(groups: dict[ProcessName, ProcessSwapGroup], process: ProcessSwapInfo) -> dict[ProcessName, ProcessSwapGroup]:
+    52                                                   if process.name not in groups:
+    53                                                       groups[process.name] = ProcessSwapGroup(process.name)
+    54                                                   groups[process.name].processes.append(process)
+    55                                                   return groups
+    56                                           
+    57         2        247.9    124.0      0.1      swap_used_groups: list[ProcessSwapGroup] = sorted(
+    58         1        548.6    548.6      0.1          (item for item in reduce(add_to_group, swap_used, dict()).values()),
+    59         1          2.4      2.4      0.0          key=lambda x: x.total_swap
+    60                                               )
+    61                                           
+    62       103        191.7      1.9      0.0      for group in swap_used_groups:
+    63       102        617.0      6.0      0.1          print(f"{group.name:<32} {bytes_to_mb(group.total_swap):10.2f}")
+    64       269        489.7      1.8      0.1          for item in group.processes:
+    65       167        679.6      4.1      0.1              print(f"{item.pid:>32} {bytes_to_mb(item.swap):10.2f}")
+    66       102        210.4      2.1      0.0          print()
+    67                                           
+    68         1          2.4      2.4      0.0      print("-" * 45)
+    69         1          5.2      5.2      0.0      print(f"{'Total swap used by processes:':<32} {bytes_to_mb(total_swap_used):10.2f} MB")
+

pyproject.toml

@@ -0,0 +1,14 @@
+[project]
+name = "swap"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.14"
+dependencies = [
+    "psutil>=7.1.3",
+]
+
+[dependency-groups]
+dev = [
+    "line-profiler>=5.0.0",
+]

uv.lock

@@ -0,0 +1,48 @@
+version = 1
+revision = 3
+requires-python = ">=3.14"
+
+[[package]]
+name = "line-profiler"
+version = "5.0.0"
+source = { registry = "https://pypi.org/simple" }
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+
+[[package]]
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+version = "0.1.0"
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+]
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+[package.metadata.requires-dev]
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