Re: [PATCH 5.1] zread: read files in 4k chunks

[Ilkka Virta]

On 22.6. 19.35, Chet Ramey wrote:
> On 6/22/20 1:53 AM, Jason A. Donenfeld wrote:
> > Currently a static sized buffer is used for reading files. At the moment
> > it is extremely small, making parsing of large files extremely slow.
> > Increase this to 4k for improved performance.
>
> I bumped it up to 1024 initially for testing.

It always struck me as odd that Bash used such a small read of 128 
bytes. Most of the GNU utils I've looked at on Debian use 8192, and a 
simple test program seems to indicate glibc's stdio reads 4096 bytes at 
one read() call.

--
Ilkka Virta / itvirta@iki.fi