[Bug gdb/24918] GDB is very slow loading.

[Bug gdb/24918] GDB is very slow loading.

[peter_foelsche at mentor dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24918

Peter Foelsche <peter_foelsche at mentor dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |peter_foelsche at mentor dot com

--- Comment #2 from Peter Foelsche <peter_foelsche at mentor dot com> ---
when using strace on a gdb process hanging in symbol loading, one can see pages
of calls to deal with signal handling...

rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {0x68a820, [], SA_RESTORER|SA_STACK, 0x3bfc60f710},
{SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {0x68a820, [], SA_RESTORER|SA_STACK, 0x3bfc60f710},
{SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {0x68a820, [], SA_RESTORER|SA_STACK, 0x3bfc60f710},
{SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {0x68a820, [], SA_RESTORER|SA_STACK, 0x3bfc60f710},
{SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0
rt_sigaction(SIGSEGV, {SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, NULL, 8) = 0
rt_sigaction(SIGSEGV, {0x68a820, [], SA_RESTORER|SA_STACK, 0x3bfc60f710},
{SIG_DFL, [], SA_RESTORER, 0x3bfc60f710}, 8) = 0
rt_sigprocmask(SIG_BLOCK, NULL, [], 8)  = 0

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[Bug gdb/24918] GDB is very slow loading.

[cbiesinger at google dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24918

Christian Biesinger <cbiesinger at google dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |cbiesinger at google dot com

--- Comment #3 from Christian Biesinger <cbiesinger at google dot com> ---
gdb 9 had some performance improvements in this area, especially if you use
'maint set worker-threads unlimited'. Have you tried that?

Also, strace is probably not that useful for this, try using a profiler instead
(e.g. 'perf record' or sysprof)

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[Bug gdb/24918] GDB is very slow loading.

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=24918

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at sourceware dot org
   Last reconfirmed|                            |2023-08-03
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |WAITING

--- Comment #4 from Tom Tromey <tromey at sourceware dot org> ---
There were further improvements in later versions of gdb.
We rewrote the DWARF reader to speed it up.
Can you try a more recent version?

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