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* [Bug symtab/13511] New: 'info variable' and 'info functions' very slow and memory cosuming @ 2011-12-16 17:11 andre.poenitz at nokia dot com 2012-01-11 20:26 ` [Bug symtab/13511] " dje at google dot com 2023-03-06 23:50 ` tromey at sourceware dot org 0 siblings, 2 replies; 3+ messages in thread From: andre.poenitz at nokia dot com @ 2011-12-16 17:11 UTC (permalink / raw) To: gdb-prs http://sourceware.org/bugzilla/show_bug.cgi?id=13511 Bug #: 13511 Summary: 'info variable' and 'info functions' very slow and memory cosuming Product: gdb Version: HEAD Status: NEW Severity: normal Priority: P2 Component: symtab AssignedTo: unassigned@sourceware.org ReportedBy: andre.poenitz@nokia.com Classification: Unclassified When starting a "system" libreoffice from ubuntu 11.04, and attaching gdb, 'info variables' takes more then a minute to start producing output. When doing the same with a debug build of the a Qt based application (I am use Qt Creator itself as test case), gdb starts eating all available memory at a rate of several gigabytes per minute. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug symtab/13511] 'info variable' and 'info functions' very slow and memory cosuming 2011-12-16 17:11 [Bug symtab/13511] New: 'info variable' and 'info functions' very slow and memory cosuming andre.poenitz at nokia dot com @ 2012-01-11 20:26 ` dje at google dot com 2023-03-06 23:50 ` tromey at sourceware dot org 1 sibling, 0 replies; 3+ messages in thread From: dje at google dot com @ 2012-01-11 20:26 UTC (permalink / raw) To: gdb-prs http://sourceware.org/bugzilla/show_bug.cgi?id=13511 dje at google dot com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ccoutant at google dot com, | |dje at google dot com --- Comment #1 from dje at google dot com 2012-01-11 20:25:51 UTC --- gdb does full symtab expansion here which will use a lot of debug info. One thought is to have enough information to be able to avoid that. E.g., could .gdb_index include enough info to avoid having to do full symtab expansion? [that also has problems, but "info var|fun|type" is common enough that triggering an explosion of debug info reading is annoying and worth avoiding] [and similarly for psymtabs, as well as maybe enhancing pubnames/pubtypes] Another thought is to be more selective with debug info reading. Is it possible to read only the parts of the CU (dwarf-speak) that we need? Another thought is to throw out the info as we're finished using it, perhaps guided by various parameters. [we'll have to read it again, but that's preferable to bringing a machine to a crawl] -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug symtab/13511] 'info variable' and 'info functions' very slow and memory cosuming 2011-12-16 17:11 [Bug symtab/13511] New: 'info variable' and 'info functions' very slow and memory cosuming andre.poenitz at nokia dot com 2012-01-11 20:26 ` [Bug symtab/13511] " dje at google dot com @ 2023-03-06 23:50 ` tromey at sourceware dot org 1 sibling, 0 replies; 3+ messages in thread From: tromey at sourceware dot org @ 2023-03-06 23:50 UTC (permalink / raw) To: gdb-prs https://sourceware.org/bugzilla/show_bug.cgi?id=13511 Tom Tromey <tromey at sourceware dot org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |tromey at sourceware dot org --- Comment #2 from Tom Tromey <tromey at sourceware dot org> --- Maybe this would be more bearable with lazy expansion, see bug #29398 -- You are receiving this mail because: You are on the CC list for the bug. ^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-03-06 23:51 UTC | newest] Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2011-12-16 17:11 [Bug symtab/13511] New: 'info variable' and 'info functions' very slow and memory cosuming andre.poenitz at nokia dot com 2012-01-11 20:26 ` [Bug symtab/13511] " dje at google dot com 2023-03-06 23:50 ` tromey at sourceware dot org
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