Hi everyone.
You write (and we can read on some docs) that DMA an PCI acess can cause
long-latency. I don't understand why.
I'am not a guru and knwo perfectly how the dma work but i thought that the cpu
ask for a dma to a device. The device is then autonomous for acessing the
memory. I wonder
Steven Rostedt wrote:
We are pleased to announce the 2.6.24.2-rt2 tree, which can be
downloaded from the location:
http://rt.et.redhat.com/download/
Information on the RT patch can be found at:
http://rt.wiki.kernel.org/index.php/Main_Page
Changes since 2.6.24-rt1
- ported
Jan Kiszka wrote:
At this chance: We still see the same unbalanced sched-other load on our
NUMA box as Gernot once reported [1]:
top - 11:19:20 up 4 min, 1 user, load average: 29.52, 9.54, 3.37
Tasks: 502 total, 41 running, 461 sleeping, 0 stopped, 0 zombie
Cpu0 :100.0%us, 0.0%sy,
On Mon, Feb 25, 2008 at 5:03 PM, in message
[EMAIL PROTECTED], Pavel Machek [EMAIL PROTECTED] wrote:
+static inline void
+prepare_adaptive_wait(struct rt_mutex *lock, struct adaptive_waiter
*adaptive)
...
+#define prepare_adaptive_wait(lock, busy) {}
This is evil. Use empty inline
On Mon, Feb 25, 2008 at 5:06 PM, in message
[EMAIL PROTECTED], Pavel Machek [EMAIL PROTECTED] wrote:
I believe you have _way_ too many config variables. If this can be set
at runtime, does it need a config option, too?
Generally speaking, I think until this algorithm has an
On Tue, 26 Feb 2008, Jan Kiszka wrote:
Jan Kiszka wrote:
At this chance: We still see the same unbalanced sched-other load on our
NUMA box as Gernot once reported [1]:
top - 11:19:20 up 4 min, 1 user, load average: 29.52, 9.54, 3.37
Tasks: 502 total, 41 running, 461 sleeping, 0
On Tue, 26 Feb 2008, Jan Kiszka wrote:
What's the NUMA topology?
4 nodes. I'm not sure if it is really NUMA related, but the same kernel
runs that test as expected on a non-NUMA 2x2 box.
What tasks are running, and at what priorities?
40 pthreads, created with default parameters
Steven Rostedt wrote:
On Tue, 26 Feb 2008, Jan Kiszka wrote:
What's the NUMA topology?
4 nodes. I'm not sure if it is really NUMA related, but the same kernel
runs that test as expected on a non-NUMA 2x2 box.
What tasks are running, and at what priorities?
40 pthreads, created with
On Tue 2008-02-26 08:03:43, Gregory Haskins wrote:
On Mon, Feb 25, 2008 at 5:03 PM, in message
[EMAIL PROTECTED], Pavel Machek [EMAIL PROTECTED] wrote:
+static inline void
+prepare_adaptive_wait(struct rt_mutex *lock, struct adaptive_waiter
*adaptive)
...
+#define
On Tue, Feb 26, 2008 at 1:06 PM, in message
[EMAIL PROTECTED], Pavel Machek [EMAIL PROTECTED] wrote:
On Tue 2008-02-26 08:03:43, Gregory Haskins wrote:
On Mon, Feb 25, 2008 at 5:03 PM, in message
[EMAIL PROTECTED], Pavel Machek [EMAIL PROTECTED] wrote:
+static inline void
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