Dear all, I''m new on this list and I''m asking here since I''m not able to find elsewhere what I''m looking for. I''m also relatively new to dtrace... What I need is, everytime a system call is made, to observe the user space stack. This is easy with ustack(), but... 1) Is it possible to force ustack() to print hexadecimal addresses? I read about "-x bufpolicy=ring", but this does not work for me since I need to process the system calls and the stacks continuously 2) Is it possible to print the ustack() output in a custom format? Or should I use sed/awk/whatever for that? An example... Given this: 0 13942 write_nocancel:entry 0x96955d7c 0x1f4c 0x1f78 0x1fa4 0x1ec8 0xbffff9dc Is it possible to have this? 0 13942 write_nocancel:entry 0x96955d7c 0x1f4c 0x1f78 0x1fa4 0x1ec8 0xbffff9dc Thank you very much for any help! -mc. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/dtrace-discuss/attachments/20120203/452614b0/attachment.html>