Date: Mon, 05 May 2025 15:22:06 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: =?UTF-8?B?W0J1ZyAyODY2MDVdIFJlZ3Jlc3Npb24gc2luY2UgdXNpbmcgTExW?= =?UTF-8?B?TeKAmXMgc3RyaW5ncw==?= Message-ID: <bug-286605-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=286605 Bug ID: 286605 Summary: Regression since using LLVM’s strings Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: olivier@freebsd.org We have a memory usage regression since the migration from elftoolchain’s strings to the LLVM’s version: It seems the LLVM’s version isn’t able to mmap while used in a pipe, so it copy ALL the file into memory. Example: $ dd if=/dev/urandom of=/tmp/test.file bs=1M count=1024 $ cat /tmp/test.file | strings > /dev/null & Now with elftoolchain’s strings: $ ps -o pid,command,vsz,rss | grep strings 53243 strings 12992 2556 And with LLVM’strings: $ ps -o pid,command,vsz,rss | grep strings 41791 strings 5027836 3413864 And with our use-case, we are using strings on GB files (like core dump), and it is now consumming all our memory. Peraps commit "81fa5c4a828bec9f1ead280c59c31bd423e6eeea" (llvm-strings: Install as strings when WITH_LLVM_BINUTILS=YES) should be reverted until fixed. -- You are receiving this mail because: You are the assignee for the bug.home | help
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