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Groups > comp.os.linux.misc > #16984
| From | Robert Riches <spamtrap42@jacob21819.net> |
|---|---|
| Newsgroups | comp.os.linux.misc |
| Subject | Re: seq command terribly slow |
| Date | 2016-03-15 02:38 +0000 |
| Organization | none-at-all |
| Message-ID | <slrnneetdf.otf.spamtrap42@one.localnet> (permalink) |
| References | <slrnne9qgo.5pk.spamtrap42@one.localnet> <874mca36r7.fsf@mantic.terraraq.uk> <slrnneb63g.p81.spamtrap42@one.localnet> <de469b0989e17d6e6c70bd903c07576c@remailer.privacy.at> |
On 2016-03-14, Anonymous Remailer (austria) <mixmaster@remailer.privacy.at> wrote: > > Robert Riches <spamtra...@jacob21819.net> [RR]: > > RR> This command shows about 600MB/s, ~40X faster with much lower > RR> total CPU use: > RR> yes '' | cat -n | tr -d ' \t' | head -c 1000000000000 | pv > /dev/null > RR> > RR> I plan to switch to a different distribution soon due to Wheezy's age, > RR> so I'll look forward to confirming that improvement. > > Since tr seems to run even faster than yes, you could in the meantime use > the following instead: > >< /dev/zero tr '\0' '\n' | cat -n | tr -d ' \t' | > head -c 1000000000000 | pv > /dev/null That's very clever. -- Robert Riches spamtrap42@jacob21819.net (Yes, that is one of my email addresses.)
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seq command terribly slow Robert Riches <spamtrap42@jacob21819.net> - 2016-03-13 04:18 +0000
Re: seq command terribly slow Richard Kettlewell <rjk@greenend.org.uk> - 2016-03-13 12:24 +0000
Re: seq command terribly slow Robert Riches <spamtrap42@jacob21819.net> - 2016-03-13 16:42 +0000
Re: seq command terribly slow "Anonymous Remailer (austria)" <mixmaster@remailer.privacy.at> - 2016-03-14 14:22 +0100
Re: seq command terribly slow Robert Riches <spamtrap42@jacob21819.net> - 2016-03-15 02:38 +0000
Re: seq command terribly slow Gernot Fink <g.fink@gmx.net> - 2016-03-13 18:21 +0100
Re: seq command terribly slow Richard Kettlewell <rjk@greenend.org.uk> - 2016-03-13 17:45 +0000
Re: seq command terribly slow Eli the Bearded <*@eli.users.panix.com> - 2016-03-14 21:58 +0000
Re: seq command terribly slow Robert Riches <spamtrap42@jacob21819.net> - 2016-03-15 02:44 +0000
Re: seq command terribly slow Eli the Bearded <*@eli.users.panix.com> - 2016-03-16 00:41 +0000
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