On 02/28/2013 03:39 PM, Waiman Long wrote:
activity level. Most of the d_path() call last for about 1ms. There
are a couple of those that last for more than 10ms.
A correction. The time unit here should be us, not ms. Sorry for the
mistake.
-Longman
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On 02/22/2013 07:13 PM, Andi Kleen wrote:
That seems to me like an application problem - poking at what the
kernel is doing via diagnostic interfaces so often that it gets in
the way of the kernel actually doing stuff is not a problem the
kernel can solve.
I agree with you that the application s
> That seems to me like an application problem - poking at what the
> kernel is doing via diagnostic interfaces so often that it gets in
> the way of the kernel actually doing stuff is not a problem the
> kernel can solve.
I agree with you that the application shouldn't be doing that, but
if ther
On Thu, Feb 21, 2013 at 11:13:27PM -0500, Waiman Long wrote:
> On 02/21/2013 07:13 PM, Andi Kleen wrote:
> >Dave Chinner writes:
> >
> >>On Tue, Feb 19, 2013 at 01:50:55PM -0500, Waiman Long wrote:
> >>>It was found that the Oracle database software issues a lot of call
> >>>to the seq_path() kern
On 02/21/2013 07:13 PM, Andi Kleen wrote:
Dave Chinner writes:
On Tue, Feb 19, 2013 at 01:50:55PM -0500, Waiman Long wrote:
It was found that the Oracle database software issues a lot of call
to the seq_path() kernel function which translates a (dentry, mnt)
pair to an absolute path. The seq_
Dave Chinner writes:
> On Tue, Feb 19, 2013 at 01:50:55PM -0500, Waiman Long wrote:
>> It was found that the Oracle database software issues a lot of call
>> to the seq_path() kernel function which translates a (dentry, mnt)
>> pair to an absolute path. The seq_path() function will eventually
>>
On Tue, Feb 19, 2013 at 01:50:55PM -0500, Waiman Long wrote:
> It was found that the Oracle database software issues a lot of call
> to the seq_path() kernel function which translates a (dentry, mnt)
> pair to an absolute path. The seq_path() function will eventually
> take the following two locks:
It was found that the Oracle database software issues a lot of call
to the seq_path() kernel function which translates a (dentry, mnt)
pair to an absolute path. The seq_path() function will eventually
take the following two locks:
1. dentry->d_lock (spinlock) from dget()/dput()
2. rename_lock(
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