Re: [PATCH] slub: Fix misleading 'age' in verbose slub prints

From: Christopher Lameter
Date: Wed Mar 07 2018 - 13:14:09 EST


On Wed, 7 Mar 2018, Chintan Pandya wrote:

> In this case, object got freed later but 'age' shows
> otherwise. This could be because, while printing
> this info, we print allocation traces first and
> free traces thereafter. In between, if we get schedule
> out, (jiffies - t->when) could become meaningless.

Ok then get the jiffies earlier?

> So, simply print when the object was allocated/freed.

The tick value may not related to anything in the logs that is why the
"age" is there. How do I know how long ago the allocation was if I look at
the log and only see long and large number of ticks since bootup?