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⚡️ Speed up method Struct_mallinfo2.__str__ by 15% #167

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⚡️ Speed up method Struct_mallinfo2.__str__ by 15% #167

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46 changes: 29 additions & 17 deletions invokeai/backend/model_manager/util/libc_util.py
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Original file line number Diff line number Diff line change
Expand Up @@ -36,23 +36,35 @@ class Struct_mallinfo2(ctypes.Structure):
]

def __str__(self) -> str:
s = ""
s += (
f"{'arena': <10}= {(self.arena / 2**30):15.5f} # Non-mmapped space allocated (GB) (uordblks + fordblks)\n"
)
s += f"{'ordblks': <10}= {(self.ordblks): >15} # Number of free chunks\n"
s += f"{'smblks': <10}= {(self.smblks): >15} # Number of free fastbin blocks \n"
s += f"{'hblks': <10}= {(self.hblks): >15} # Number of mmapped regions \n"
s += f"{'hblkhd': <10}= {(self.hblkhd / 2**30):15.5f} # Space allocated in mmapped regions (GB)\n"
s += f"{'usmblks': <10}= {(self.usmblks): >15} # Unused\n"
s += f"{'fsmblks': <10}= {(self.fsmblks / 2**30):15.5f} # Space in freed fastbin blocks (GB)\n"
s += (
f"{'uordblks': <10}= {(self.uordblks / 2**30):15.5f} # Space used by in-use allocations (non-mmapped)"
" (GB)\n"
)
s += f"{'fordblks': <10}= {(self.fordblks / 2**30):15.5f} # Space in free blocks (non-mmapped) (GB)\n"
s += f"{'keepcost': <10}= {(self.keepcost / 2**30):15.5f} # Top-most, releasable space (GB)\n"
return s
# Precompute divisor
GB = 2**30

# Avoid repeated attribute and division lookups
arena_gb = self.arena / GB
ordblks = self.ordblks
smblks = self.smblks
hblks = self.hblks
hblkhd_gb = self.hblkhd / GB
usmblks = self.usmblks
fsmblks_gb = self.fsmblks / GB
uordblks_gb = self.uordblks / GB
fordblks_gb = self.fordblks / GB
keepcost_gb = self.keepcost / GB

# List of strings, join at the end for efficiency
lines = [
f"{'arena': <10}= {arena_gb:15.5f} # Non-mmapped space allocated (GB) (uordblks + fordblks)\n",
f"{'ordblks': <10}= {ordblks: >15} # Number of free chunks\n",
f"{'smblks': <10}= {smblks: >15} # Number of free fastbin blocks \n",
f"{'hblks': <10}= {hblks: >15} # Number of mmapped regions \n",
f"{'hblkhd': <10}= {hblkhd_gb:15.5f} # Space allocated in mmapped regions (GB)\n",
f"{'usmblks': <10}= {usmblks: >15} # Unused\n",
f"{'fsmblks': <10}= {fsmblks_gb:15.5f} # Space in freed fastbin blocks (GB)\n",
(f"{'uordblks': <10}= {uordblks_gb:15.5f} # Space used by in-use allocations (non-mmapped) (GB)\n"),
f"{'fordblks': <10}= {fordblks_gb:15.5f} # Space in free blocks (non-mmapped) (GB)\n",
f"{'keepcost': <10}= {keepcost_gb:15.5f} # Top-most, releasable space (GB)\n",
]
return "".join(lines)


class LibcUtil:
Expand Down