0m0.91s
sys 0m14.38s
DragonflyBSD, x86, 4k pipe buffer:
mkfile 500m testx
time bash -c 'cat /dev/null
real0m14.46s
user0m1.27s
sys 0m20.77s
As you can see the performance on identical hardware differ greatly
and depends on pipe implementation and buffer size.
Chris
-
On Thu, Apr 1, 2010 at 10:50 AM, wrote:
>
>>Chris Pickett wrote:
>>> But I think ulimit -p should not be restricted to certain buffer
>>> sizes, it should be the script author to pick a safe value.
>>> If we use a global kernel tunable for setting the default
On Thu, Apr 1, 2010 at 10:50 AM, wrote:
>
>>Chris Pickett wrote:
>>> But I think ulimit -p should not be restricted to certain buffer
>>> sizes, it should be the script author to pick a safe value.
>>> If we use a global kernel tunable for setting the default
On Thu, Apr 1, 2010 at 9:13 AM, Garrett D'Amore
wrote:
> On 03/31/10 10:47 PM, Alan Coopersmith wrote:
>>
>> Chris Pickett wrote:
>>
>>>
>>> But I think ulimit -p should not be restricted to certain buffer
>>> sizes, it should be the scrip
..) is safe.
But I think ulimit -p should not be restricted to certain buffer
sizes, it should be the script author to pick a safe value.
If we use a global kernel tunable for setting the default PIPE_BUF it
could spew a warning to /var/adm/messages if the size
because ARC
doesn't like it.
Chris
--
^---^
(@)v(@) Chris Pickett
|/ IT consultant
===m==m=== pkch...@users.sourceforge.net
___
perf-discuss mailing list
perf-discuss@opensolaris.org
d
fd limits, ...) but uses the same solution to pick buffer sizes.
Chris
--
^---^
(@)v(@) Chris Pickett
|/ IT consultant
===m==m=== pkch...@users.sourceforge.net
___
perf-discuss mailing list
perf-discuss@opensolaris.org
riesen/
>> GraphicsMagick Maintainer,http://www.GraphicsMagick.org/
>> ___
>> perf-discuss mailing list
>> perf-discuss@opensolaris.org
>
> --
>
> Rickey C. Weisner
> Software Development and Performance Specialist
> Principal Field Technologist
> Systems Quality Office
> cell phone: 615-308-1147
> email: rick.weis...@sun.com
> ___
> perf-discuss mailing list
> perf-discuss@opensolaris.org
>
--
^---^
(@)v(@) Chris Pickett
|/ IT consultant
===m==m=== pkch...@users.sourceforge.net
___
perf-discuss mailing list
perf-discuss@opensolaris.org
