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From: Robert W. <rj...@du...> - 2004-11-21 06:55:16
|
So, I finally got around to measuring the impact of watchpoints on execution time. It varies between 5%-8% in the case where the patch is applied but no watchpoints are defined. When the patch is applied and a watchpoint is defined, it jumps to 20%-30%, even if they watchpoint is never triggered. Ouch! I wonder if it's possible to minimize the impact in any way? Regards, Robert. --=20 Robert Walsh Amalgamated Durables, Inc. - "We don't make the things you buy." Email: rj...@du... |
|
From: Robert W. <rj...@du...> - 2004-11-21 06:45:12
|
About the question of "do we use glibc" versus "do we write our own",
have we looked at any existing alternate libc packages out there?
uClibc, diet libc, klibc, etc. If they're as small as they sound (I
haven't really checked) then there's the possibility of just including
the entire package with Valgrind.
Questions to be answered are:
* What's a comprehensive list of existing libc packages?
* Are they licensed appropriately?
* Do they do everything we want?
* Do they do it in a Valgrind-safe way (brk use, etc.)?
* If not, would they be easy to fix up?
* Are they small enough to include lock, stock and barrel in the
Valgrind source tree?
* If not, is it worth having a separate tree to contain them, with
all of the complications that would add to the build process?
* Are they portable?
* If they're already ported to other OSes and platforms, do they
include ones we care about? (FreeBSD, PPC, x86_64, etc.)
* If not, would they be easy to port?
* How would we deal with integrating new releases, submitting
patches back to the maintainers, etc.?
Lots of questions. I haven't thought about the answers yet.
Assuming I've been smoking the crack pipe and this is a silly idea, how
about making a new vglibc directory (sibling of coregrind) and putting
what's currently found in vg_mylibc.c and vg_pthread* in there,
splitting these n-thousand line files up into something more manageable
and building a libvgc.a?
Regards,
Robert.
--=20
Robert Walsh
Amalgamated Durables, Inc. - "We don't make the things you buy."
Email: rj...@du...
|
|
From: Tom H. <to...@co...> - 2004-11-21 04:54:56
|
Nightly build on dunsmere ( Fedora Core 3 ) started at 2004-11-21 03:20:10 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow -- Finished tests in none/tests ---------------------------------------- == 191 tests, 14 stderr failures, 1 stdout failure ================= corecheck/tests/fdleak_cmsg (stderr) corecheck/tests/fdleak_fcntl (stderr) corecheck/tests/fdleak_ipv4 (stderr) corecheck/tests/fdleak_socketpair (stderr) memcheck/tests/badjump (stderr) memcheck/tests/badjump2 (stderr) memcheck/tests/badpoll (stderr) memcheck/tests/buflen_check (stderr) memcheck/tests/execve (stderr) memcheck/tests/execve2 (stderr) memcheck/tests/scalar (stderr) memcheck/tests/scalar_exit_group (stderr) memcheck/tests/scalar_supp (stderr) memcheck/tests/writev (stderr) none/tests/exec-sigmask (stdout) make: *** [regtest] Error 1 |
|
From: <js...@ac...> - 2004-11-21 04:00:58
|
Nightly build on phoenix ( SuSE 9.1 ) started at 2004-11-21 03:50:01 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow insn_sse: valgrind ./insn_sse insn_sse2: (skipping, prereq failed: ../../../tests/cputest x86-sse2) int: valgrind ./int rm: cannot remove `vgcore.pid*': No such file or directory (cleanup operation failed: rm vgcore.pid*) pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 186 tests, 5 stderr failures, 0 stdout failures ================= corecheck/tests/as_mmap (stderr) corecheck/tests/fdleak_fcntl (stderr) memcheck/tests/scalar (stderr) memcheck/tests/writev (stderr) memcheck/tests/zeropage (stderr) make: *** [regtest] Error 1 |
|
From: Tom H. <th...@cy...> - 2004-11-21 03:24:00
|
Nightly build on audi ( Red Hat 9 ) started at 2004-11-21 03:15:12 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 191 tests, 12 stderr failures, 0 stdout failures ================= corecheck/tests/fdleak_cmsg (stderr) corecheck/tests/fdleak_fcntl (stderr) corecheck/tests/fdleak_ipv4 (stderr) corecheck/tests/fdleak_socketpair (stderr) memcheck/tests/badpoll (stderr) memcheck/tests/buflen_check (stderr) memcheck/tests/execve (stderr) memcheck/tests/execve2 (stderr) memcheck/tests/scalar (stderr) memcheck/tests/scalar_exit_group (stderr) memcheck/tests/scalar_supp (stderr) memcheck/tests/writev (stderr) make: *** [regtest] Error 1 |
|
From: Tom H. <th...@cy...> - 2004-11-21 03:13:42
|
Nightly build on ginetta ( Red Hat 8.0 ) started at 2004-11-21 03:10:08 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow depfile='.deps/fpu_lazy_eflags.Po' tmpdepfile='.deps/fpu_lazy_eflags.TPo' \ depmode=gcc3 /bin/sh ../../../depcomp \ gcc -DHAVE_CONFIG_H -I. -I. -I../../.. -Winline -Wall -Wshadow -g -I../../../include -c `test -f 'fpu_lazy_eflags.c' || echo './'`fpu_lazy_eflags.c gcc -Winline -Wall -Wshadow -g -I../../../include -o fpu_lazy_eflags fpu_lazy_eflags.o /usr/bin/perl ./gen_insn_test.pl < insn_basic.def > insn_basic.c source='insn_basic.c' object='insn_basic.o' libtool=no \ depfile='.deps/insn_basic.Po' tmpdepfile='.deps/insn_basic.TPo' \ depmode=gcc3 /bin/sh ../../../depcomp \ gcc -DHAVE_CONFIG_H -I. -I. -I../../.. -Winline -Wall -Wshadow -g -I../../../include -c `test -f 'insn_basic.c' || echo './'`insn_basic.c cc1: No space left on device: error writing to /tmp/ccBu8p1h.s make[4]: *** [insn_basic.o] Error 1 rm insn_basic.c make[4]: Leaving directory `/tmp/valgrind.12503/valgrind/none/tests/x86' make[3]: *** [check-am] Error 2 make[3]: Leaving directory `/tmp/valgrind.12503/valgrind/none/tests/x86' make[2]: *** [check-recursive] Error 1 make[2]: Leaving directory `/tmp/valgrind.12503/valgrind/none/tests' make[1]: *** [check-recursive] Error 1 make[1]: Leaving directory `/tmp/valgrind.12503/valgrind/none' make: *** [check-recursive] Error 1 |
|
From: Tom H. <th...@cy...> - 2004-11-21 03:11:06
|
Nightly build on alvis ( Red Hat 7.3 ) started at 2004-11-21 03:05:12 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow insn_fpu: valgrind ./insn_fpu insn_mmx: valgrind ./insn_mmx insn_mmxext: valgrind ./insn_mmxext insn_sse: valgrind ./insn_sse insn_sse2: (skipping, prereq failed: ../../../tests/cputest x86-sse2) int: valgrind ./int rm: cannot remove `vgcore.pid*': No such file or directory (cleanup operation failed: rm vgcore.pid*) pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 191 tests, 2 stderr failures, 0 stdout failures ================= memcheck/tests/scalar (stderr) memcheck/tests/vgtest_ume (stderr) make: *** [regtest] Error 1 |
|
From: Tom H. <th...@cy...> - 2004-11-21 03:06:14
|
Nightly build on standard ( Red Hat 7.2 ) started at 2004-11-21 03:00:13 GMT Checking out source tree ... done Configuring ... done Building ... done Running regression tests ... done Last 20 lines of log.verbose follow insn_fpu: valgrind ./insn_fpu insn_mmx: valgrind ./insn_mmx insn_mmxext: valgrind ./insn_mmxext insn_sse: valgrind ./insn_sse insn_sse2: (skipping, prereq failed: ../../../tests/cputest x86-sse2) int: valgrind ./int rm: cannot remove `vgcore.pid*': No such file or directory (cleanup operation failed: rm vgcore.pid*) pushpopseg: valgrind ./pushpopseg rcl_assert: valgrind ./rcl_assert seg_override: valgrind ./seg_override -- Finished tests in none/tests/x86 ------------------------------------ yield: valgrind ./yield -- Finished tests in none/tests ---------------------------------------- == 191 tests, 2 stderr failures, 0 stdout failures ================= memcheck/tests/scalar (stderr) memcheck/tests/vgtest_ume (stderr) make: *** [regtest] Error 1 |