Hi Jaegeuk,
On 2017/3/2 3:35, Jaegeuk Kim wrote:
> Hi Chao,
>
> BTW, we need to add a shrinker for this as well, right?
Hmm...do we really have to?
As at most we will have 3900 NAT blocks, so
a. free_nid_bitmap: 3900 * 57 = ~217 KB
b. nat_block_bitmap:3900 / 8 = ~487 BYTE
c. free_nid_co
Hi Chao,
BTW, we need to add a shrinker for this as well, right?
Thanks,
On 02/23, Chao Yu wrote:
> In scenario of intensively node allocation, free nids will be ran out
> soon, then it needs to stop to load free nids by traversing NAT blocks,
> in worse case, if NAT blocks does not be cached in
On 02/27, Chao Yu wrote:
> On 2017/2/26 3:02, Jaegeuk Kim wrote:
> > On 02/25, Chao Yu wrote:
> >> Hi Jaegeuk,
> >>
> >> I added below diff code into this patch in order to fix incorrectly nid
> >> status
> >> updating to reduce large latency of generic/251 in fstest, could you help
> >> to
> >>
On 2017/2/26 3:02, Jaegeuk Kim wrote:
> On 02/25, Chao Yu wrote:
>> Hi Jaegeuk,
>>
>> I added below diff code into this patch in order to fix incorrectly nid
>> status
>> updating to reduce large latency of generic/251 in fstest, could you help to
>> review code below?
>
> Understand the problem,
On 02/25, Chao Yu wrote:
> Hi Jaegeuk,
>
> I added below diff code into this patch in order to fix incorrectly nid status
> updating to reduce large latency of generic/251 in fstest, could you help to
> review code below?
Understand the problem, and how about this?
diff --git a/fs/f2fs/node.c b/
Hi Jaegeuk,
I added below diff code into this patch in order to fix incorrectly nid status
updating to reduce large latency of generic/251 in fstest, could you help to
review code below?
Latency:beforeafter
generic/251 1483s ... 184s
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 52d
In scenario of intensively node allocation, free nids will be ran out
soon, then it needs to stop to load free nids by traversing NAT blocks,
in worse case, if NAT blocks does not be cached in memory, it generates
IOs which slows down our foreground operations.
In order to speed up node allocation
