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+++ This bug was initially created as a clone of Bug #588945 +++ 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 --- Additional comment from jan.kratochvil@redhat.com on 2010-05-04 17:55:56 EDT --- Maybe some hardlink would also help etc., unaware what abrt does there. --- Additional comment from dvlasenk@redhat.com on 2010-05-07 08:47:03 EDT --- Created an attachment (id=412336) Proposed fix Run tested. --- Additional comment from dvlasenk@redhat.com on 2010-05-07 09:15:20 EDT --- "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
This request was evaluated by Red Hat Product Management for inclusion in a Red Hat Enterprise Linux major release. Product Management has requested further review of this request by Red Hat Engineering, for potential inclusion in a Red Hat Enterprise Linux Major release. This request is not yet committed for inclusion.
Red Hat Enterprise Linux Beta 2 is now available and should resolve the problem described in this bug report. This report is therefore being closed with a resolution of CURRENTRELEASE. You may reopen this bug report if the solution does not work for you.