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From: Florian K. <br...@ac...> - 2008-07-27 09:12:55
|
I was attempting to do some archeology on the old valgrind repository following the instructions from this page: http://valgrind.org/downloads/repository.html I noticed that a couple of things there were out of date: - The web interface to the old repository no longer exists. http://websvn.kde.org/trunk/valgrind/ is a stale link - svn://anonsvn.kde.org/home/kde/trunk/valgrind/ no longer exists The old repository is still available via svn://anonsvn.kde.org/home/kde/tags/valgrind/X.Y.Z with X.Y.Z being some valgrind version number, e.g. 2.4.1 - The referred to page http://developer.kde.org/source/anonsvn.html exists but is content-free and not much helpful ;) Florian |
|
From: MoJiong Q. <qm...@ho...> - 2008-07-27 03:50:41
|
Yes, the replay runs the original sequence of instructions. The basic idea is to record the non-deterministic events by intercepting and recording all the system calls requested by client program. During the replay, the client system calls are not handed to kernel, and the recorded syscall results (syscall ret, and memory written by OS kernel) will be feeded back. Because the non-deterministic events are injected back into the client program, its replay will get the exact same execution path of the record. Valgrind tool like Cachegrind can be turned on in the replay. The tool will be notified the same set of instrumentation events in the same order, as it would be in the record if turned on. I am still a new Valgrind hacker. I am not sure the following stuff: 1 For a given basic block, libVEX gurantees deterministic translation result for the same hardware? Which factors affect the translation result? 2 Whether Valgrind core brings indeterminism to the instruction sequence of client program? Espeically when the syscalls are not actually serviced by OS kernel in replay. Do you have any comments?Thanks,Mojiong> Date: Sat, 26 Jul 2008 13:54:23 +1000> From: nj...@cs...> To: qm...@ho...> CC: val...@li...> Subject: Re: [Valgrind-developers] Record/replay support in valgrind> > On Thu, 24 Jul 2008, MoJiong Qiu wrote:> > > I have spent some time implementing a prototype of record and replay in > > the valgrind core based on intercepting and recording syscall results and > > playing back their results. So far, I have only wrapped a dozen or so > > syscalls and valgrind only records and replays small single threaded > > programs. I am able to record execution for these small programs with > > this modified valgrind core with no analysis, and have the core replay the > > execution while turning on instrumentation and analysis (I turned on > > cachegrind while replaying). More complex client programs can be > > supported as more syscalls are recorded and replayed. It doesn't > > currently support multithreading or signal delivery, though I expect > > recording and replaying these should be doable as well.> > You say you record the system calls, but then you run Cachegrind on the > replayed code. Are you running all the original instructions during the > replay?> > Nick _________________________________________________________________ Connect to the next generation of MSN Messenger http://imagine-msn.com/messenger/launch80/default.aspx?locale=en-us&source=wlmailtagline |
|
From: Tom H. <th...@cy...> - 2008-07-27 03:06:09
|
Nightly build on alvis ( i686, Red Hat 7.3 ) started at 2008-07-27 03:15:01 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 345 tests, 60 stderr failures, 1 stdout failure, 29 post failures == memcheck/tests/file_locking (stderr) memcheck/tests/leak-0 (stderr) memcheck/tests/leak-cycle (stderr) memcheck/tests/leak-regroot (stderr) memcheck/tests/leak-tree (stderr) memcheck/tests/long_namespace_xml (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/origin1-yes (stderr) memcheck/tests/origin4-many (stderr) memcheck/tests/origin5-bz2 (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/stack_changes (stderr) memcheck/tests/varinfo1 (stderr) memcheck/tests/varinfo2 (stderr) memcheck/tests/varinfo3 (stderr) memcheck/tests/varinfo4 (stderr) memcheck/tests/varinfo5 (stderr) memcheck/tests/varinfo6 (stderr) memcheck/tests/x86/bug152022 (stderr) memcheck/tests/x86/scalar (stderr) memcheck/tests/x86/scalar_supp (stderr) memcheck/tests/x86/xor-undef-x86 (stderr) memcheck/tests/xml1 (stderr) massif/tests/alloc-fns-A (post) massif/tests/alloc-fns-B (post) massif/tests/basic (post) massif/tests/basic2 (post) massif/tests/big-alloc (post) massif/tests/culling1 (stderr) massif/tests/culling2 (stderr) massif/tests/custom_alloc (post) massif/tests/deep-A (post) massif/tests/deep-B (stderr) massif/tests/deep-B (post) massif/tests/deep-C (stderr) massif/tests/deep-C (post) massif/tests/deep-D (post) massif/tests/ignoring (post) massif/tests/insig (post) massif/tests/long-names (post) massif/tests/long-time (post) massif/tests/new-cpp (post) massif/tests/null (post) massif/tests/one (post) massif/tests/overloaded-new (post) massif/tests/peak (post) massif/tests/peak2 (stderr) massif/tests/peak2 (post) massif/tests/realloc (stderr) massif/tests/realloc (post) massif/tests/thresholds_0_0 (post) massif/tests/thresholds_0_10 (post) massif/tests/thresholds_10_0 (post) massif/tests/thresholds_10_10 (post) massif/tests/thresholds_5_0 (post) massif/tests/thresholds_5_10 (post) massif/tests/zero1 (post) massif/tests/zero2 (post) none/tests/blockfault (stderr) none/tests/mremap2 (stdout) none/tests/shell (stderr) none/tests/shell_valid1 (stderr) none/tests/shell_valid2 (stderr) none/tests/shell_valid3 (stderr) helgrind/tests/hg01_all_ok (stderr) helgrind/tests/hg02_deadlock (stderr) helgrind/tests/hg03_inherit (stderr) helgrind/tests/hg04_race (stderr) helgrind/tests/hg05_race2 (stderr) helgrind/tests/hg06_readshared (stderr) helgrind/tests/tc01_simple_race (stderr) helgrind/tests/tc02_simple_tls (stderr) helgrind/tests/tc03_re_excl (stderr) helgrind/tests/tc05_simple_race (stderr) helgrind/tests/tc06_two_races (stderr) helgrind/tests/tc07_hbl1 (stderr) helgrind/tests/tc08_hbl2 (stderr) helgrind/tests/tc09_bad_unlock (stderr) helgrind/tests/tc11_XCHG (stderr) helgrind/tests/tc12_rwl_trivial (stderr) helgrind/tests/tc14_laog_dinphils (stderr) helgrind/tests/tc16_byterace (stderr) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc18_semabuse (stderr) helgrind/tests/tc19_shadowmem (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) helgrind/tests/tc23_bogus_condwait (stderr) helgrind/tests/tc24_nonzero_sem (stderr) |
|
From: Tom H. <th...@cy...> - 2008-07-27 02:55:34
|
Nightly build on aston ( x86_64, Fedora Core 5 ) started at 2008-07-27 03:20:05 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 443 tests, 8 stderr failures, 1 stdout failure, 0 post failures == memcheck/tests/file_locking (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/x86/scalar (stderr) none/tests/blockfault (stderr) none/tests/mremap2 (stdout) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) |
|
From: Tom H. <th...@cy...> - 2008-07-27 02:45:47
|
Nightly build on lloyd ( x86_64, Fedora 7 ) started at 2008-07-27 03:05:05 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 437 tests, 6 stderr failures, 2 stdout failures, 0 post failures == memcheck/tests/file_locking (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/scalar (stderr) none/tests/mremap2 (stdout) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc22_exit_w_lock (stderr) |
|
From: Tom H. <th...@cy...> - 2008-07-27 02:41:40
|
Nightly build on trojan ( x86_64, Fedora Core 6 ) started at 2008-07-27 03:25:04 BST Results differ from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 441 tests, 9 stderr failures, 5 stdout failures, 0 post failures == memcheck/tests/file_locking (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/bug133694 (stdout) memcheck/tests/x86/bug133694 (stderr) memcheck/tests/x86/scalar (stderr) none/tests/cmdline1 (stdout) none/tests/cmdline2 (stdout) none/tests/mremap2 (stdout) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) ================================================= == Results from 24 hours ago == ================================================= Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 441 tests, 8 stderr failures, 5 stdout failures, 0 post failures == memcheck/tests/file_locking (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/vcpu_fnfns (stdout) memcheck/tests/x86/bug133694 (stdout) memcheck/tests/x86/bug133694 (stderr) memcheck/tests/x86/scalar (stderr) none/tests/cmdline1 (stdout) none/tests/cmdline2 (stdout) none/tests/mremap2 (stdout) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) ================================================= == Difference between 24 hours ago and now == ================================================= *** old.short Sun Jul 27 03:33:30 2008 --- new.short Sun Jul 27 03:41:48 2008 *************** *** 8,10 **** ! == 441 tests, 8 stderr failures, 5 stdout failures, 0 post failures == memcheck/tests/file_locking (stderr) --- 8,10 ---- ! == 441 tests, 9 stderr failures, 5 stdout failures, 0 post failures == memcheck/tests/file_locking (stderr) *************** *** 19,20 **** --- 19,21 ---- none/tests/mremap2 (stdout) + helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc20_verifywrap (stderr) |
|
From: Tom H. <th...@cy...> - 2008-07-27 02:23:53
|
Nightly build on gill ( x86_64, Fedora Core 2 ) started at 2008-07-27 03:00:03 BST Results unchanged from 24 hours ago Checking out valgrind source tree ... done Configuring valgrind ... done Building valgrind ... done Running regression tests ... failed Regression test results follow == 443 tests, 32 stderr failures, 3 stdout failures, 0 post failures == memcheck/tests/file_locking (stderr) memcheck/tests/malloc_free_fill (stderr) memcheck/tests/origin5-bz2 (stderr) memcheck/tests/pointer-trace (stderr) memcheck/tests/stack_switch (stderr) memcheck/tests/varinfo6 (stderr) memcheck/tests/x86/scalar (stderr) memcheck/tests/x86/scalar_supp (stderr) none/tests/amd64/insn_ssse3 (stdout) none/tests/amd64/insn_ssse3 (stderr) none/tests/amd64/ssse3_misaligned (stderr) none/tests/blockfault (stderr) none/tests/fdleak_fcntl (stderr) none/tests/mremap2 (stdout) none/tests/x86/insn_ssse3 (stdout) none/tests/x86/insn_ssse3 (stderr) none/tests/x86/ssse3_misaligned (stderr) helgrind/tests/hg01_all_ok (stderr) helgrind/tests/hg02_deadlock (stderr) helgrind/tests/hg03_inherit (stderr) helgrind/tests/hg04_race (stderr) helgrind/tests/hg05_race2 (stderr) helgrind/tests/tc01_simple_race (stderr) helgrind/tests/tc05_simple_race (stderr) helgrind/tests/tc06_two_races (stderr) helgrind/tests/tc09_bad_unlock (stderr) helgrind/tests/tc14_laog_dinphils (stderr) helgrind/tests/tc16_byterace (stderr) helgrind/tests/tc17_sembar (stderr) helgrind/tests/tc19_shadowmem (stderr) helgrind/tests/tc20_verifywrap (stderr) helgrind/tests/tc21_pthonce (stderr) helgrind/tests/tc22_exit_w_lock (stderr) helgrind/tests/tc23_bogus_condwait (stderr) drd/tests/atomic_var (stderr) |