* [RFC][QUESTION] fuse: how to enlarge the max pages per request
@ 2020-03-10 10:03 piaojun
2020-03-10 12:34 ` piaojun
2020-03-16 9:24 ` Miklos Szeredi
0 siblings, 2 replies; 4+ messages in thread
From: piaojun @ 2020-03-10 10:03 UTC (permalink / raw)
To: miklos; +Cc: linux-fsdevel
Hi Miklos,
From my test, a fuse write req can only contain 128KB which seems
limited by FUSE_DEFAULT_MAX_PAGES_PER_REQ in kernel. I wonder if I
could enlarge this macro to get more bandwidth, or some other adaption
should be done?
Up to now, many userspace filesystem is designed for big data which
needs big bandwidth, such as 2MB or more. So could we add a feature to
let the user config the max pages per request? Looking forward for your
reply.
Thanks,
Jun
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [RFC][QUESTION] fuse: how to enlarge the max pages per request
2020-03-10 10:03 [RFC][QUESTION] fuse: how to enlarge the max pages per request piaojun
@ 2020-03-10 12:34 ` piaojun
2020-03-16 9:24 ` Miklos Szeredi
1 sibling, 0 replies; 4+ messages in thread
From: piaojun @ 2020-03-10 12:34 UTC (permalink / raw)
To: miklos; +Cc: linux-fsdevel
ping?
On 2020/3/10 18:03, piaojun wrote:
> Hi Miklos,
>
>>From my test, a fuse write req can only contain 128KB which seems
> limited by FUSE_DEFAULT_MAX_PAGES_PER_REQ in kernel. I wonder if I
> could enlarge this macro to get more bandwidth, or some other adaption
> should be done?
>
> Up to now, many userspace filesystem is designed for big data which
> needs big bandwidth, such as 2MB or more. So could we add a feature to
> let the user config the max pages per request? Looking forward for your
> reply.
>
> Thanks,
> Jun
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [RFC][QUESTION] fuse: how to enlarge the max pages per request
2020-03-10 10:03 [RFC][QUESTION] fuse: how to enlarge the max pages per request piaojun
2020-03-10 12:34 ` piaojun
@ 2020-03-16 9:24 ` Miklos Szeredi
2020-03-16 9:35 ` piaojun
1 sibling, 1 reply; 4+ messages in thread
From: Miklos Szeredi @ 2020-03-16 9:24 UTC (permalink / raw)
To: piaojun; +Cc: linux-fsdevel
On Tue, Mar 10, 2020 at 11:03 AM piaojun <piaojun@huawei.com> wrote:
>
> Hi Miklos,
>
> From my test, a fuse write req can only contain 128KB which seems
> limited by FUSE_DEFAULT_MAX_PAGES_PER_REQ in kernel. I wonder if I
> could enlarge this macro to get more bandwidth, or some other adaption
> should be done?
>
> Up to now, many userspace filesystem is designed for big data which
> needs big bandwidth, such as 2MB or more. So could we add a feature to
> let the user config the max pages per request? Looking forward for your
Currently maximum 1MB per write request is possible by setting
FUSE_MAX_PAGES flag and max_pages=256 in INIT reply.
Thanks,
Miklos
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [RFC][QUESTION] fuse: how to enlarge the max pages per request
2020-03-16 9:24 ` Miklos Szeredi
@ 2020-03-16 9:35 ` piaojun
0 siblings, 0 replies; 4+ messages in thread
From: piaojun @ 2020-03-16 9:35 UTC (permalink / raw)
To: Miklos Szeredi; +Cc: linux-fsdevel
On 2020/3/16 17:24, Miklos Szeredi wrote:
> On Tue, Mar 10, 2020 at 11:03 AM piaojun <piaojun@huawei.com> wrote:
>>
>> Hi Miklos,
>>
>> From my test, a fuse write req can only contain 128KB which seems
>> limited by FUSE_DEFAULT_MAX_PAGES_PER_REQ in kernel. I wonder if I
>> could enlarge this macro to get more bandwidth, or some other adaption
>> should be done?
>>
>> Up to now, many userspace filesystem is designed for big data which
>> needs big bandwidth, such as 2MB or more. So could we add a feature to
>> let the user config the max pages per request? Looking forward for your
>
> Currently maximum 1MB per write request is possible by setting
> FUSE_MAX_PAGES flag and max_pages=256 in INIT reply.
Thanks for your reply. I got the point.
Jun
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2020-03-16 9:35 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2020-03-10 10:03 [RFC][QUESTION] fuse: how to enlarge the max pages per request piaojun
2020-03-10 12:34 ` piaojun
2020-03-16 9:24 ` Miklos Szeredi
2020-03-16 9:35 ` piaojun
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