[PATCH] D157884: [AIX] Limit `extract_symbols.py`'s Pools Size to 8
Qiongsi Wu via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon Aug 14 08:11:38 PDT 2023
qiongsiwu1 created this revision.
qiongsiwu1 added reviewers: daltenty, john.brawn, thieta.
Herald added a project: All.
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On AIX, `extract_symbols.py`'s default pool size may be too big for the logical partition(LPAR)'s allocated memory, and may lead to intermittent IO errors. This patch limits the pool size to 8 to avoid such errors.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D157884
Files:
llvm/utils/extract_symbols.py
Index: llvm/utils/extract_symbols.py
===================================================================
--- llvm/utils/extract_symbols.py
+++ llvm/utils/extract_symbols.py
@@ -22,6 +22,7 @@
import subprocess
import multiprocessing
import argparse
+import platform
# Define a function which extracts a list of pairs of (symbols, is_def) from a
# library using llvm-nm becuase it can work both with regular and bitcode files.
@@ -428,7 +429,12 @@
# Extract symbols from libraries in parallel. This is a huge time saver when
# doing a debug build, as there are hundreds of thousands of symbols in each
# library.
- pool = multiprocessing.Pool()
+ # FIXME: On AIX, the default pool size can be too big for a logical
+ # partition's allocated memory, and can lead to an out of memory
+ # IO error. We are setting the pool size to 8 to avoid such
+ # errors at the moment, and will look for a graceful solution later.
+ pool = multiprocessing.Pool(8) if platform.system() == "AIX" \
+ else multiprocessing.Pool()
try:
# Only one argument can be passed to the mapping function, and we can't
# use a lambda or local function definition as that doesn't work on
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