[LKML watch] Issues that systemtap team may be interest

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[LKML watch] Issues that systemtap team may be interest

Masami Hiramatsu
Hi,

Here are issues posted on LKML in the last week.
Some issues were solved, but other issues were not solved.

http://www.ussg.iu.edu/hypermail/linux/kernel/0512.2/1841.html
Linux-Kernel Archive: 4k stacks
# Measuring amount of consumed stack size by using
# a hand-made patch. SystemTap can do it more easily.

http://www.ussg.iu.edu/hypermail/linux/kernel/0512.3/0220.html
Linux-Kernel Archive: How to obtain process ID that created a packet
# They tried to catch PID that generated a packet by using netfilter.
# But the attempt failed. SystemTap can easily do that.

For example:
probe kernel.function("sys_send") {
        printf("packet generated by %d\n", pid());
}

http://www.ussg.iu.edu/hypermail/linux/kernel/0512.3/0455.html
Linux-Kernel Archive: [SCHED] Totally WRONG prority calculation
with specific test-case(since 2.6.10-bk12)
# Monitoring process priority by using top command.
# SystemTap can provide more precise log of priority.

http://www.ussg.iu.edu/hypermail/linux/kernel/0512.3/0342.html
Linux-Kernel Archive: How to get blocking information?
# He wants to know when the processes sleep inside system-calls.
# SystemTap may obtain these information easily.
# This issue is not solved.

Best regards,

--
Masami HIRAMATSU
2nd Research Dept.
Hitachi, Ltd., Systems Development Laboratory
E-mail: [hidden email]