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Re: wget | Draft: Initial test for dynamic buffer size for downloads (!3


From: @rockdaboot
Subject: Re: wget | Draft: Initial test for dynamic buffer size for downloads (!32)
Date: Mon, 06 Jun 2022 16:42:48 +0000



Tim Rühsen commented on a discussion on src/retr.c: 
https://gitlab.com/gnuwget/wget/-/merge_requests/32#note_972776585

>    int ret = 0;
>  #undef max
>  #define max(a,b) ((a) > (b) ? (a) : (b))
> -  int dlbufsize = max (BUFSIZ, 8 * 1024);
> -  char *dlbuf = xmalloc (dlbufsize);
> +  int dlbufsize = max (BUFSIZ, 16 * 1024 * 1024);

We should possibly cap it 1 or 2 MB. Because I normally see just 65464 bytes 
being read - except when the CPU is busy for some milliseconds with something 
else. So while the buffer often goes up to 2 or 4 MB because of a single event, 
the read() comes back with ~65k of data.

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