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Groups > gnu.bash.bug > #16434
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| From | "Jason A. Donenfeld" <Jason@zx2c4.com> |
| Newsgroups | gnu.bash.bug |
| Subject | Re: [PATCH 5.1] zread: read files in 4k chunks |
| Date | Mon, 22 Jun 2020 14:17:41 -0600 |
| Lines | 17 |
| Approved | bug-bash@gnu.org |
| Message-ID | <mailman.288.1592857090.2574.bug-bash@gnu.org> (permalink) |
| References | <20200622055328.155106-1-Jason@zx2c4.com> <3cac1f66-697d-396d-3dc8-fc5b621638a4@case.edu> <271ebec9-fe1f-7823-a236-2e734657a279@iki.fi> <CAHmME9oLN4OiPnthUi1rdRhwkSPchGcyYRdpEyXz4ciU_cBg0Q@mail.gmail.com> |
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| Cc | Chester Ramey <chet.ramey@case.edu>, bug-bash@gnu.org |
| To | Ilkka Virta <itvirta@iki.fi> |
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On Mon, Jun 22, 2020 at 2:16 PM Ilkka Virta <itvirta@iki.fi> wrote: > > 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. Plus most other shells people use...
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Re: [PATCH 5.1] zread: read files in 4k chunks "Jason A. Donenfeld" <Jason@zx2c4.com> - 2020-06-22 14:17 -0600
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