12:39 p.m.
Guy Streeter wrote:
How can I find out what other tasks are threads of (or with) a given
task?
--Guy
There's no direct command to do it. But, for example,
all threads of a task should have the same name and the
same task->tgid right?
So for example, I just executed a task named "mkthreads", pid 27610,
which in turn creates 10 threads of itself, all of which will have
the same task->tgid:
crash> foreach mkthreads task | grep -e COMMAND -e tgid
PID: 27610 TASK: ddb2c000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27611 TASK: c82de000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27612 TASK: d016a000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27613 TASK: c3f2e000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27614 TASK: db95e000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27615 TASK: d6dfa000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27616 TASK: ddad6000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27617 TASK: cd1a4000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27618 TASK: d45de000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27619 TASK: cef58000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27620 TASK: cdc38000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
crash>
Dave
1:07 p.m.
Dave Anderson wrote:
Guy Streeter wrote:
> How can I find out what other tasks are threads of (or with) a given
> task?
>
> --Guy
There's no direct command to do it. But, for example,
all threads of a task should have the same name and the
same task->tgid right?
So for example, I just executed a task named "mkthreads", pid 27610,
which in turn creates 10 threads of itself, all of which will have
the same task->tgid:
crash> foreach mkthreads task | grep -e COMMAND -e tgid
PID: 27610 TASK: ddb2c000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27611 TASK: c82de000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27612 TASK: d016a000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27613 TASK: c3f2e000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27614 TASK: db95e000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27615 TASK: d6dfa000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27616 TASK: ddad6000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27617 TASK: cd1a4000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27618 TASK: d45de000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27619 TASK: cef58000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27620 TASK: cdc38000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
crash>
Dave
I'll whip up a "ps -g" option for the next release, whlch will look
like "ps -c" in that, for each task whose pid equals its tgid, will
then list its threads indented underneath.
(BTW, I've implemented your previous suggestion for a ps
option to dump the full command line and all of a task's
environment variable dumps as well...)
Thanks,
Dave
1:53 p.m.
On Fri, 2006-09-29 at 14:07 -0400, Dave Anderson wrote:
...
I'll whip up a "ps -g" option for the next release,
whlch will look
like "ps -c" in that, for each task whose pid equals its tgid, will
then list its threads indented underneath.
(BTW, I've implemented your previous suggestion for a ps
option to dump the full command line and all of a task's
environment variable dumps as well...)
Thanks,
Dave
Dave,
If I got the level of support from all software developers that I get
from you, my job would be pure joy.
thanks,
--Guy
12:27 a.m.
On Fri, Sep 29, 2006 at 01:39:49PM -0400, Dave Anderson wrote:
Guy Streeter wrote:
> How can I find out what other tasks are threads of (or with) a given
> task?
>
> --Guy
There's no direct command to do it. But, for example,
all threads of a task should have the same name and the
same task->tgid right?
All threads of a process will be in the task_struct->thread_group list
of the process' group_leader. Wouldn't that be easier/faster to do?
Ananth
So for example, I just executed a task named "mkthreads", pid 27610,
which in turn creates 10 threads of itself, all of which will have
the same task->tgid:
crash> foreach mkthreads task | grep -e COMMAND -e tgid
PID: 27610 TASK: ddb2c000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27611 TASK: c82de000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27612 TASK: d016a000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27613 TASK: c3f2e000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27614 TASK: db95e000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27615 TASK: d6dfa000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27616 TASK: ddad6000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27617 TASK: cd1a4000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27618 TASK: d45de000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27619 TASK: cef58000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
PID: 27620 TASK: cdc38000 CPU: 0 COMMAND: "mkthreads"
tgid = 27610,
crash>
Dave
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4 comments
3 participants
participants (3)
-
Ananth N Mavinakayanahalli -
Dave Anderson -
Guy Streeter