Thanks for the hint... and sorry for the simple question: how do I dump IR to see what you suggest?
On 01.08.2012 10:30, Alexander Potapenko wrote: > How about dumping the IR to see how much instructions are actually > being translated in both modes? > The problem might be related to the memory barriers implemented (if I > remember correctly) with MCR instructions in the userspace > __kernel_dmb() (and maybe other) functions present in the SMP mode. > > On Wed, Aug 1, 2012 at 11:38 AM, Christophe Lyon <[email protected]> > wrote: >> Hello, >> >> I have been using valgrind --leak-check=yes on an ARM-Cortex-A9 board to >> debug an application (based on gstreamer), and find it much slower when the >> board is booted in SMP mode than it UP mode. >> >> I takes about 20 minutes before it detects an error: >> >> ==1393== Invalid read of size 1 >> ==1393== at 0x4831E64: strncmp (mc_replace_strmem.c:534) >> ==1393== by 0x5EB1923: pixman_arm_read_auxv (in >> /usr/lib/libpixman-1.so.0.22.2) >> >> After that, execution is about as fast as in UP mode. >> >> Is there any difference in the beginning stage of valgrind between SMP and >> UP modes? >> Using the 'top' command shows that the system is busy at the memcheck-arm-li >> process. >> >> Where can I look at to isolate the problem? >> >> Thanks! >> >> Christophe. >> >> >> ------------------------------------------------------------------------------ >> Live Security Virtual Conference >> Exclusive live event will cover all the ways today's security and >> threat landscape has changed and how IT managers can respond. Discussions >> will include endpoint security, mobile security and the latest in malware >> threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ >> _______________________________________________ >> Valgrind-users mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/valgrind-users > > ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Valgrind-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/valgrind-users
