Description of problem: When the core file is large and sparse abrtd slows down the system up to 240x. GDB gdb.base/bigcore.exp explicitly exploits this problem but it can be seen in other real world core dumps. If nothing else abrtd should at least optimize write(usercorefile,zeroes) to lseek(). Version-Release number of selected component (if applicable): abrt-1.0.9-2.fc12.x86_64 How reproducible: Always. Steps to Reproduce: Download some gdb. ./configure make cd gdb/testsuite make site.exp time runtest gdb.base/bigcore.exp service abrtd stop time runtest gdb.base/bigcore.exp Actual results: real 1m41.021s (Keith Seitz has reported ~8min on his box) real 0m2.223s Expected results: real <few secs> real 0m2.223s Additional info: read(1, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 4096 write(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 4096) = 4096 ... PID TTY STAT TIME COMMAND 12 ? S 0:01 \_ [khelper] 21699 ? D 0:02 | \_ /usr/libexec/abrt-hook-ccpp /var/cache/abrt 21696 6 502 17179869184 ... /proc/21699/fd/ lr-x------ 1 root root 64 2010-05-04 23:31 0 -> pipe:[11399566] lrwx------ 1 root root 64 2010-05-04 23:31 1 -> /var/cache/abrt/ccpp-1273008577-21696/coredump\ (deleted) lrwx------ 1 root root 64 2010-05-04 23:31 2 -> socket:[11401038] l-wx------ 1 root root 64 2010-05-04 23:31 3 -> /home/.../gdb/testsuite/core.21696
Maybe some hardlink would also help etc., unaware what abrt does there.
Created attachment 412336 [details] Proposed fix Run tested.
"time runtest gdb.base/bigcore.exp" with this patch went down from real 9m23.708s user 0m0.285s sys 0m22.819s to real 0m35.821s user 0m0.318s sys 0m8.738s
abrt-1.1.13-1.fc14 has been submitted as an update for Fedora 14. http://admin.fedoraproject.org/updates/abrt-1.1.13-1.fc14
abrt-1.1.13-1.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/abrt-1.1.13-1.fc13
abrt-1.1.13-1.fc14 has been pushed to the Fedora 14 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update abrt'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/abrt-1.1.13-1.fc14
abrt-1.1.13-1.fc12 has been submitted as an update for Fedora 12. http://admin.fedoraproject.org/updates/abrt-1.1.13-1.fc12
abrt-1.1.13-1.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report.
abrt-1.1.13-2.fc14 has been submitted as an update for Fedora 14. http://admin.fedoraproject.org/updates/abrt-1.1.13-2.fc14
abrt-1.1.13-2.fc14 has been pushed to the Fedora 14 stable repository. If problems still persist, please make note of it in this bug report.
abrt-1.1.13-1.fc12 has been pushed to the Fedora 12 stable repository. If problems still persist, please make note of it in this bug report.