Hi, We have done some -fstack-protector evaluations.
- Performance as benchmarked. We used SPEC2000 for this, both int and float. There were only insignificant changes (<1%) in both size and speed of the testcases. - Binary / RPM Sizes The total (compressed) RPM set size of 5CDs grew by 2.9MB (0.1%). The install size (assuming installation of ALL RPMs on those 5CDs) grew by 5MB (0.05%). There is no binary running away in size increase or decrease. - Facilitation I have also checked on how often it is triggered. Scanning the i386 tree, 182792 functions are now protected by stackprotector. (objdump -d binary |grep xor.*gs:0x14|wc -l) Top: ./usr/lib/libwireshark.so.0.0.1 24579 ./usr/bin/gvim 4472 ./bin/vim 3618 ./usr/bin/wireshark 2224 ./usr/lib/thunderbird/thunderbird-bin 1803 ./usr/lib/libnetsnmpmibs.so.15.0.0 1628 ./usr/lib/xulrunner-1.8.1b2/libxul.so 1368 ./usr/lib/firefox/firefox-bin 1363 ./usr/bin/hpijs 1337 So wireshark(formerly known as ethereal), vim, Mozilla*, net-snmp... The two main compressors are nearly unaffected: ./usr/bin/bzip2 3 ./bin/gzip 5 - Final performance evaluation is difficult due to slight instability of Alpha0plus. Ciao, Marcus --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
