On 08/03/2021 16:22, John Garry wrote:
While max32_alloc_size indirectly tracks the largest*contiguous*
available space, one of the ideas from which it grew was to simply keep
count of the total number of free PFNs. If you're really spending
significant time determining that the tree is full
On 08/03/2021 15:15, Robin Murphy wrote:
I figure that you're talking about 4e89dce72521 now. I would have
liked to know which real-life problem it solved in practice.
From what I remember, the problem reported was basically the one
illustrated in that commit and the one I alluded to above -
On 2021-03-01 15:48, John Garry wrote:
On 01/03/2021 13:20, Robin Murphy wrote:
FWIW, I'm 99% sure that what you really want is [1], but then you get
to battle against an unknown quantity of dodgy firmware instead.
Something which has not been said before is that this only happens for
strict m
On 01/03/2021 15:48, John Garry wrote:
While max32_alloc_size indirectly tracks the largest*contiguous*
available space, one of the ideas from which it grew was to simply keep
count of the total number of free PFNs. If you're really spending
significant time determining that the tree is full,
On 01/03/2021 13:20, Robin Murphy wrote:
FWIW, I'm 99% sure that what you really want is [1], but then you get
to battle against an unknown quantity of dodgy firmware instead.
Something which has not been said before is that this only happens for
strict mode.
I think that makes sense - once yo
On 2021-02-25 13:54, John Garry wrote:
On 29/01/2021 12:03, Robin Murphy wrote:
On 2021-01-29 09:48, Leizhen (ThunderTown) wrote:
Currently, we are thinking about the solution to the problem.
However, because the end time of v5.11 is approaching, this patch is
sent first.
However, that com
On 29/01/2021 12:03, Robin Murphy wrote:
On 2021-01-29 09:48, Leizhen (ThunderTown) wrote:
Currently, we are thinking about the solution to the problem. However,
because the end time of v5.11 is approaching, this patch is sent first.
However, that commit was made for a reason - how do we jus
Hi Robin,
在 2021/1/29 20:03, Robin Murphy 写道:
On 2021-01-29 09:48, Leizhen (ThunderTown) wrote:
Currently, we are thinking about the solution to the problem.
However, because the end time of v5.11 is approaching, this patch is
sent first.
However, that commit was made for a reason - how d
On 2021-01-29 09:48, Leizhen (ThunderTown) wrote:
Currently, we are thinking about the solution to the problem. However, because
the end time of v5.11 is approaching, this patch is sent first.
However, that commit was made for a reason - how do we justify that one
thing being slow is more im
Currently, we are thinking about the solution to the problem. However, because
the end time of v5.11 is approaching, this patch is sent first.
On 2021/1/29 17:21, Zhen Lei wrote:
> This reverts commit 4e89dce725213d3d0b0475211b500eda4ef4bf2f.
>
> We find that this patch has a great impact on
This reverts commit 4e89dce725213d3d0b0475211b500eda4ef4bf2f.
We find that this patch has a great impact on performance. According to
our test: the iops decreases from 1655.6K to 893.5K, about half.
Hardware: 1 SAS expander with 12 SAS SSD
Command: Only the main parameters are listed.
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