lua-resty-upload performance

a4irkin · 2015-02-03T03:50:44+00:00

Hello! On Wed, Feb 18, 2015 at 10:33 AM, Dmitry Kireev wrote: > If anyone is interested, I created an openresty binary deb package for > raspberry pi...

lua-resty-upload performance

a4irkin

Hello!

Is there big performance differences between HttpUploadModule and lua-resty-upload when uploading big files?

I did not made tests, thinking that you've probably experienced it.

Have a nice day!

Aleksey

agentzh

Hello!

On Mon, Feb 2, 2015 at 11:50 AM, Aleksey Smart wrote:
> Is there big performance differences between HttpUploadModule and
> lua-resty-upload when uploading big files?
>

No big performance difference is possible as long as you do not buffer
all the data chunks at once in Lua (that is, you should receive a data
chunk from the connection, then write it out to your file or whatever
backend immediately).

Regards,
-agentzh

a4irkin

Write chunk into local variable in lua and lua io file write operation is no big difference with C functions too?

понедельник, 2 февраля 2015 г., 23:06:05 UTC+3 пользователь agentzh написал:

Hello!

On Mon, Feb 2, 2015 at 11:50 AM, Aleksey Smart wrote:
> Is there big performance differences between HttpUploadModule and
> lua-resty-upload when uploading big files?
>

No big performance difference is possible as long as you do not buffer
all the data chunks at once in Lua (that is, you should receive a data
chunk from the connection, then write it out to your file or whatever
backend immediately).

Regards,
-agentzh

agentzh

Hello!

On Mon, Feb 2, 2015 at 12:41 PM, Aleksey Smart wrote:
> Write chunk into local variable in lua and lua io file write operation is no
> big difference with C functions too?
>

Nope. It's a very thin layer. The system call overhead is way larger
than the overhead of this layer.

Regards,
-agentzh