On 01/09/2015 12:54 PM, Jakub Jelinek wrote:
Also, the number of relocations and memory consumption got up. Non-PIE cc1plus: Relocation section '.rela.dyn' at offset 0x187d30 contains 190 entries: Relocation section '.rela.plt' at offset 0x188f00 contains 284 entries: GNU_RELRO 0x1d14730 0x0000000002314730 0x0000000002314730 0x0058d0 0x0058d0 R 0x1 PIE cc1plus: Relocation section '.rela.dyn' at offset 0x187d90 contains 75803 entries: Relocation section '.rela.plt' at offset 0x344018 contains 230 entries: GNU_RELRO 0x1e18cf0 0x0000000002018cf0 0x0000000002018cf0 0x10e310 0x10e310 R 0x1 That means e.g. on the startup of each cc1plus process, that means 1MB extra COW wastage (executable has 24KB of pages written and then made non-writable, while PIE over 1MB).
Odd. Did you test with copy relocations enabled? -- Florian Weimer / Red Hat Product Security -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
