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* [Bug general/4226] New: new libunwind bindings test-ptrace-mapper very slow.
@ 2007-03-20 21:38 npremji at redhat dot com
2007-03-20 21:48 ` [Bug general/4226] " npremji at redhat dot com
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: npremji at redhat dot com @ 2007-03-20 21:38 UTC (permalink / raw)
To: frysk-bugzilla
--
Summary: new libunwind bindings test-ptrace-mapper very slow.
Product: frysk
Version: unspecified
Status: NEW
Severity: normal
Priority: P2
Component: general
AssignedTo: frysk-bugzilla at sourceware dot org
ReportedBy: npremji at redhat dot com
http://sourceware.org/bugzilla/show_bug.cgi?id=4226
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* [Bug general/4226] new libunwind bindings test-ptrace-mapper very slow.
2007-03-20 21:38 [Bug general/4226] New: new libunwind bindings test-ptrace-mapper very slow npremji at redhat dot com
@ 2007-03-20 21:48 ` npremji at redhat dot com
2007-03-20 21:51 ` npremji at redhat dot com
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: npremji at redhat dot com @ 2007-03-20 21:48 UTC (permalink / raw)
To: frysk-bugzilla
------- Additional Comments From npremji at redhat dot com 2007-03-20 21:48 -------
Created an attachment (id=1637)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=1637&action=view)
libunwind 20070224 straced.
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http://sourceware.org/bugzilla/show_bug.cgi?id=4226
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* [Bug general/4226] new libunwind bindings test-ptrace-mapper very slow.
2007-03-20 21:38 [Bug general/4226] New: new libunwind bindings test-ptrace-mapper very slow npremji at redhat dot com
2007-03-20 21:48 ` [Bug general/4226] " npremji at redhat dot com
@ 2007-03-20 21:51 ` npremji at redhat dot com
2007-03-20 22:49 ` npremji at redhat dot com
2007-03-20 23:03 ` npremji at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: npremji at redhat dot com @ 2007-03-20 21:51 UTC (permalink / raw)
To: frysk-bugzilla
------- Additional Comments From npremji at redhat dot com 2007-03-20 21:50 -------
Created an attachment (id=1638)
--> (http://sourceware.org/bugzilla/attachment.cgi?id=1638&action=view)
libunwind 0.98.5 straced.
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http://sourceware.org/bugzilla/show_bug.cgi?id=4226
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* [Bug general/4226] new libunwind bindings test-ptrace-mapper very slow.
2007-03-20 21:38 [Bug general/4226] New: new libunwind bindings test-ptrace-mapper very slow npremji at redhat dot com
2007-03-20 21:48 ` [Bug general/4226] " npremji at redhat dot com
2007-03-20 21:51 ` npremji at redhat dot com
@ 2007-03-20 22:49 ` npremji at redhat dot com
2007-03-20 23:03 ` npremji at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: npremji at redhat dot com @ 2007-03-20 22:49 UTC (permalink / raw)
To: frysk-bugzilla
------- Additional Comments From npremji at redhat dot com 2007-03-20 22:49 -------
It seems as though this bug has to do with caching. The logs show that reads are
done when no ptrace-continue has occurred and the maps should still be valid.
<cagney> ptrace(PTRACE_PEEKUSER, 24688, 4*EIP, [0x56c402]) = 0
<cagney> open("/proc/24688/maps", O_RDONLY) = 3
<cagney> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7f15000
<cagney> read(3, "0056c000-0056d000 r-xp 0056c000 "..., 4096) = 4060
<cagney> read(3, "b7fb6000-b7fb7000 -w-p b7fb6000 "..., 4096) = 1574
<cagney> read(3, "", 4096) = 0
<cagney> close(3) = 0
<cagney> munmap(0xb7f15000, 4096) = 0
<cagney> rt_sigprocmask(SIG_SETMASK, ~[RTMIN RT_1], [], 8) = 0
<cagney> open("/proc/24688/maps", O_RDONLY) = 3
<cagney> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
0) = 0xb7f15000
<cagney> read(3, "0056c000-0056d000 r-xp 0056c000 "..., 4096) = 4060
<cagney> read(3, "b0aec000-b0aed000 -w-p b0aec000 "..., 4096) = 4059
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What |Removed |Added
----------------------------------------------------------------------------
OtherBugsDependingO| |3076
nThis| |
http://sourceware.org/bugzilla/show_bug.cgi?id=4226
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* [Bug general/4226] new libunwind bindings test-ptrace-mapper very slow.
2007-03-20 21:38 [Bug general/4226] New: new libunwind bindings test-ptrace-mapper very slow npremji at redhat dot com
` (2 preceding siblings ...)
2007-03-20 22:49 ` npremji at redhat dot com
@ 2007-03-20 23:03 ` npremji at redhat dot com
3 siblings, 0 replies; 5+ messages in thread
From: npremji at redhat dot com @ 2007-03-20 23:03 UTC (permalink / raw)
To: frysk-bugzilla
------- Additional Comments From npremji at redhat dot com 2007-03-20 23:03 -------
upstream bug:
https://savannah.nongnu.org/bugs/index.php?19365
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end of thread, other threads:[~2007-03-20 23:03 UTC | newest]
Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed)
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2007-03-20 21:38 [Bug general/4226] New: new libunwind bindings test-ptrace-mapper very slow npremji at redhat dot com
2007-03-20 21:48 ` [Bug general/4226] " npremji at redhat dot com
2007-03-20 21:51 ` npremji at redhat dot com
2007-03-20 22:49 ` npremji at redhat dot com
2007-03-20 23:03 ` npremji at redhat dot com
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