lkml.org 
[lkml]   [1999]   [Dec]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: Per-Processor Data Paget
From
Date
slurn@griffin.engr.sgi.com (Scott Lurndal) writes:

>
> And what percentage of the time does a thread in the same address space
> get scheduled on a single processor.

Most Linux systems still run with a single CPU, so I would guess "most".
At least they cannot be ignored.

Also lots of apps simply rely on kernel thread for IO context. Aio is
implemented in glibc using cloned threads. Other programs use them e.g.
to tolerate paging latencies on mmap'ed files or for sendfile. For that it
makes sense to have a lot of threads per process on a single CPU, even on
a big multi CPU machine.


-Andi

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:55    [from the cache]
©2003-2011 Jasper Spaans