| 1 |
Luke-Jr wrote: |
| 2 |
> Did it actually solve it or just hide it? IIRC, NPTL causes 'ps' to show |
| 3 |
> process trees differently.. |
| 4 |
|
| 5 |
NPTL actually changes the way linux creates threads. Instead of just |
| 6 |
using the clone method to create threads, NPTL still uses clone, but it |
| 7 |
now has actual kernel support for the resource management. This makes it |
| 8 |
easier and faster for the kernel to context switch between processes |
| 9 |
(and threads within a process). |
| 10 |
|
| 11 |
A prime example of this is a test from the LKML, where Ulrich Drepper |
| 12 |
wrote he was able to start and stop 100,000 threads in about 2 seconds. |
| 13 |
In further messages, Ingo Molnar confirms this and also points out that |
| 14 |
before these changes, it would have taken upwards to 15 minutes for the |
| 15 |
same thing. |
| 16 |
|
| 17 |
http://kerneltrap.org/node/422 |
| 18 |
-- |
| 19 |
gentoo-server@g.o mailing list |
Archives