https://bugs.llvm.org/show_bug.cgi?id=46050
Bug ID: 46050
Summary: Output files are fragmented
Product: clang
Version: 10.0
Hardware: PC
OS: Windows NT
Status: NEW
Severity: enhancement
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: lev-...@mail.ru
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
Created attachment 23525
--> https://bugs.llvm.org/attachment.cgi?id=23525&action=edit
files to reproduce
Hello.
I've found that clang++.exe produces fragmented output files.
Average fragmentation is 3 fragments per file.
Please make output without fragmentation. It helps to get high compilation
speed.
Steps to reproduce on windows platform:
1. unpack attachment
2. fill configuration area in run.cmd
3. start run.cmd
4. wait for all clang processes are created and wait for they exit
5. use "getFileFragmentation.cmd path_to_out" command to get fragmentation info
for output folder. (getFileFragmentation.cmd can be added to
%APPDATA%\Microsoft\Windows\SendTo)
Solution described is here
https://sourceforge.net/p/sevenzip/feature-requests/981/
> D:\temp\clangFragmentation\out\f1.dep is in 4 fragments
> D:\temp\clangFragmentation\out\f1.o is in 2 fragments
> (...)
>
> Summary:
> Number of files processed: 48
> Number unsuccessfully procesed: 0
> Average fragmentation : 3 frags/file
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