Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.os.linux.misc > #92334

Re: Tips for dd ( was Re: Ventoy for ISO management?)

Path csiph.com!weretis.net!feeder8.news.weretis.net!news.tcpreset.net!newsgate.tebibyte.org!.POSTED.48.red-79-150-116.dynamicip.rima-tde.net!Telcontar.valinor!not-for-mail
From "Carlos E.R." <robin_listas@es.invalid>
Newsgroups comp.os.linux.misc
Subject Re: Tips for dd ( was Re: Ventoy for ISO management?)
Date Sun, 27 Sep 2026 19:55:04 +0200
Organization Tebibyte_Retro_Gaming
Message-ID <os1oomx7ar.ln2@Telcontar.valinor> (permalink)
References <DkSdncSkDY0RZDX3nZ2dnZfqnPGdnZ2d@giganews.com> <1198rh6$kn69$1@dont-email.me> <87a4p3vbtb.fsf@atr2.ath.cx> <119a0s6$10eok$2@dont-email.me> <eli$2609270017@qaz.wtf> <119af89$14cuj$1@dont-email.me> <119ajec$15e0d$1@dont-email.me> <119b0b5$19l73$11@dont-email.me> <meenomx3lt.ln2@Telcontar.valinor> <119bgv2$1glpo$8@dont-email.me>
MIME-Version 1.0
Content-Type text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding 8bit
Injection-Info mailgate.tebibyte.org; posting-host="48.red-79-150-116.dynamicip.rima-tde.net:79.150.116.48"; logging-data="3668"; mail-complaints-to="abuse@tebibyte.org"
User-Agent Mozilla Thunderbird
Content-Language es-ES, en-CA
In-Reply-To <119bgv2$1glpo$8@dont-email.me>
X-Leafnode-NNTP-Posting-Host 127.0.0.1
Xref csiph.com comp.os.linux.misc:92334

Show key headers only | View raw

On 2026-09-27 18:41, The Natural Philosopher wrote:
> On 27/09/2026 13:23, Carlos E.R. wrote:
>> On 2026-09-27 13:57, The Natural Philosopher wrote:
> 
>>> IIRC blocksize made a difference on hard disks, with not of lot of 
>>> caching
>>>
>>> But with modern processors and plenty of memory and even an SSD it is 
>>> almost pointless.
>>
>> Experiments contradict you.
>>
>> I tested writing a big file to hard disk, with the default blocksize 
>> and a big blocksize, and the difference was measurable (dd).
>>
> 
> Which is what I said
> 
> "IIRC blocksize made a difference on hard disks, with not of lot of 
> caching"

Disks have internal caching way bigger than the default blocksize.

cer@Telcontar:~/tmp> time dd if=/dev/zero of=testfile.zero count=52428800
52428800+0 records in
52428800+0 records out
26843545600 bytes (27 GB, 25 GiB) copied, 148,939 s, 180 MB/s

real	2m28,969s
user	0m11,736s
sys	2m17,029s
cer@Telcontar:~/tmp>

cer@Telcontar:~/tmp> time dd if=/dev/zero of=testfile.zero count=6553600 bs=4096
6553600+0 records in
6553600+0 records out
26843545600 bytes (27 GB, 25 GiB) copied, 105,738 s, 254 MB/s

real	1m45,750s
user	0m1,923s
sys	0m34,904s
cer@Telcontar:~/tmp>

cer@Telcontar:~/tmp> time dd if=/dev/zero of=testfile.zero count=409600 bs=65536
409600+0 records in
409600+0 records out
26843545600 bytes (27 GB, 25 GiB) copied, 105,819 s, 254 MB/s

real	1m47,710s
user	0m0,111s
sys	0m21,869s
cer@Telcontar:~/tmp>

cer@Telcontar:~/tmp> time dd if=/dev/zero of=testfile.zero count=25600 bs=1048576
25600+0 records in
25600+0 records out
26843545600 bytes (27 GB, 25 GiB) copied, 106,455 s, 252 MB/s

real	1m48,224s
user	0m0,000s
sys	0m22,769s
cer@Telcontar:~/tmp>



-- 
Cheers, Carlos.
ES🇪🇸, EU🇪🇺;

Back to comp.os.linux.misc | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-09-15 03:52 -0400
  Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Marco Moock <mm@dorfdsl.de> - 2026-09-15 10:54 +0200
    Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-15 23:30 +0000
  Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Woozy Song <suzyw0ng@outlook.com> - 2026-09-15 17:08 +0800
    Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-15 16:38 +0100
      Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-15 17:21 +0000
        Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E. R." <robin_listas@es.invalid> - 2026-09-15 21:32 +0200
          Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-16 01:07 +0100
            Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-16 00:35 +0000
              Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E. R." <robin_listas@es.invalid> - 2026-09-16 07:13 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-16 11:38 +0100
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-09-16 21:26 -0400
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E.R." <robin_listas@es.invalid> - 2026-09-17 08:17 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-17 06:25 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E.R." <robin_listas@es.invalid> - 2026-09-17 08:38 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-09-17 03:34 -0400
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-09-17 02:41 -0400
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E.R." <robin_listas@es.invalid> - 2026-09-17 09:44 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-09-17 17:44 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E.R." <robin_listas@es.invalid> - 2026-09-17 20:38 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-17 19:39 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-17 19:35 +0000
                Ventoy for ISO management? (Re: Wow - Oracle Linux - 10+ Gigabyte ISO !) Lars Poulsen <lars@beagle-ears.com> - 2026-09-26 09:23 -0700
                Re: Ventoy for ISO management? (Re: Wow - Oracle Linux - 10+ Gigabyte ISO !) rbowman <bowman@montana.com> - 2026-09-26 19:21 +0000
                Re: Ventoy for ISO management? (Re: Wow - Oracle Linux - 10+ Gigabyte ISO !) jayjwa <jayjwa@atr2.ath.cx.invalid> - 2026-09-26 19:21 -0400
                Re: Tips for dd ( was Re: Ventoy for ISO management?) Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-27 03:00 +0000
                Re: Tips for dd ( was Re: Ventoy for ISO management?) Eli the Bearded <*@eli.users.panix.com> - 2026-09-27 04:18 +0000
                Re: Tips for dd ( was Re: Ventoy for ISO management?) Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-27 07:05 +0000
                Re: Tips for dd ( was Re: Ventoy for ISO management?) Nuno Silva <nunojsilva@invalid.invalid> - 2026-09-27 09:17 +0100
                Re: Tips for dd ( was Re: Ventoy for ISO management?) The Natural Philosopher <tnp@invalid.invalid> - 2026-09-27 12:57 +0100
                Re: Tips for dd ( was Re: Ventoy for ISO management?) "Carlos E.R." <robin_listas@es.invalid> - 2026-09-27 14:23 +0200
                Re: Tips for dd ( was Re: Ventoy for ISO management?) The Natural Philosopher <tnp@invalid.invalid> - 2026-09-27 17:41 +0100
                Re: Tips for dd ( was Re: Ventoy for ISO management?) "Carlos E.R." <robin_listas@es.invalid> - 2026-09-27 19:55 +0200
                Re: Tips for dd ( was Re: Ventoy for ISO management?) "Carlos E.R." <robin_listas@es.invalid> - 2026-09-27 12:53 +0200
                Re: Tips for dd ( was Re: Ventoy for ISO management?) Nuno Silva <nunojsilva@invalid.invalid> - 2026-09-27 18:04 +0100
                Re: Tips for dd ( was Re: Ventoy for ISO management?) c186282 <c186282@nnada.net> - 2026-09-27 04:13 -0400
                Re: Tips for dd ( was Re: Ventoy for ISO management?) "Carlos E.R." <robin_listas@es.invalid> - 2026-09-27 12:53 +0200
                Re: Tips for dd ( was Re: Ventoy for ISO management?) c186282 <c186282@nnada.net> - 2026-09-28 01:37 -0400
                Re: Tips for dd ( was Re: Ventoy for ISO management?) "Carlos E.R." <robin_listas@es.invalid> - 2026-09-28 10:09 +0200
                Re: Tips for dd ( was Re: Ventoy for ISO management?) Philippe <p.naudin+nntp@free.fr> - 2026-09-28 12:10 +0200
                Re: Tips for dd ( was Re: Ventoy for ISO management?) Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-28 23:03 +0000
                Re: Ventoy for ISO management? (Re: Wow - Oracle Linux - 10+ Gigabyte ISO !) "s|b" <me@privacy.invalid> - 2026-09-27 18:56 +0200
                Re: Ventoy for ISO management? (Re: Wow - Oracle Linux - 10+ Gigabyte ISO !) Andy Burns <usenet@andyburns.uk> - 2026-09-27 18:17 +0100
                Re: Ventoy for ISO management? (Re: Wow - Oracle Linux - 10+ Gigabyte ISO !) ant@zimage.comANT (Ant) - 2026-09-28 00:50 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-17 19:28 +0000
              Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-16 11:37 +0100
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-16 18:04 +0000
              ISO9660 images, vfat USB mass storage devices and El Torito (was: Re: Wow - Oracle Linux - 10+ Gigabyte ISO !) Nuno Silva <nunojsilva@invalid.invalid> - 2026-09-16 18:55 +0100
                Re: ISO9660 images, vfat USB mass storage devices and El Torito c186282 <c186282@nnada.net> - 2026-09-16 22:25 -0400
                Re: ISO9660 images, vfat USB mass storage devices and El Torito "Carlos E.R." <robin_listas@es.invalid> - 2026-09-17 08:22 +0200
                Re: ISO9660 images, vfat USB mass storage devices and El Torito c186282 <c186282@nnada.net> - 2026-09-17 03:28 -0400
                Re: ISO9660 images, vfat USB mass storage devices and El Torito "Carlos E.R." <robin_listas@es.invalid> - 2026-09-17 10:32 +0200
                Re: ISO9660 images, vfat USB mass storage devices and El Torito rbowman <bowman@montana.com> - 2026-09-17 20:25 +0000
                Re: ISO9660 images, vfat USB mass storage devices and El Torito c186282 <c186282@nnada.net> - 2026-09-17 21:26 -0400
                Re: ISO9660 images, vfat USB mass storage devices and El Torito "Carlos E.R." <robin_listas@es.invalid> - 2026-09-19 21:39 +0200
                Re: ISO9660 images, vfat USB mass storage devices and El Torito rbowman <bowman@montana.com> - 2026-09-20 01:55 +0000
                Re: ISO9660 images, vfat USB mass storage devices and El Torito "Carlos E.R." <robin_listas@es.invalid> - 2026-09-20 14:10 +0200
                Re: ISO9660 images, vfat USB mass storage devices and El Torito rbowman <bowman@montana.com> - 2026-09-20 17:35 +0000
                Re: ISO9660 images, vfat USB mass storage devices and El Torito "Carlos E.R." <robin_listas@es.invalid> - 2026-09-20 21:01 +0200
                Re: ISO9660 images, vfat USB mass storage devices and El Torito rbowman <bowman@montana.com> - 2026-09-21 02:28 +0000
                Re: ISO9660 images, vfat USB mass storage devices and El Torito "Carlos E.R." <robin_listas@es.invalid> - 2026-09-21 11:36 +0200
                Re: ISO9660 images, vfat USB mass storage devices and El Torito rbowman <bowman@montana.com> - 2026-09-21 19:06 +0000
                Re: ISO9660 images, vfat USB mass storage devices and El Torito "Carlos E.R." <robin_listas@es.invalid> - 2026-09-21 21:48 +0200
          Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-16 00:33 +0000
            Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E. R." <robin_listas@es.invalid> - 2026-09-16 07:14 +0200
              Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-16 05:45 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E. R." <robin_listas@es.invalid> - 2026-09-16 08:52 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-16 07:44 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E. R." <robin_listas@es.invalid> - 2026-09-16 10:07 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-16 17:53 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-17 14:02 +0100
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-17 19:02 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-17 22:18 +0100
              Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-16 06:18 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-16 11:39 +0100
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-16 17:48 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E.R." <robin_listas@es.invalid> - 2026-09-16 20:40 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-09-16 21:40 -0400
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-09-16 22:18 -0400
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-09-17 03:29 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E.R." <robin_listas@es.invalid> - 2026-09-17 08:25 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-09-17 02:33 -0400
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-17 14:11 +0100
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! "Carlos E.R." <robin_listas@es.invalid> - 2026-09-17 20:40 +0200
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-17 14:00 +0100
              Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-09-16 21:27 -0400
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-17 02:11 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-17 14:07 +0100
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-17 19:41 +0000
            Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-16 11:35 +0100
              Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-16 18:02 +0000
                Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-17 14:04 +0100
        Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-09-16 01:05 +0100
  Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Lars Poulsen <lars@beagle-ears.com> - 2026-09-15 05:50 -0700
    Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Philippe <p.naudin+nntp@free.fr> - 2026-09-15 15:23 +0200
      Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Bud Frede <frede@mouse-potato.com> - 2026-10-08 15:52 -0400
        Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Cóilín Nioclásín Glostéir <thanks-to@Taf.com> - 2026-10-10 18:40 +0000
          Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! c186282 <c186282@nnada.net> - 2026-10-11 00:12 -0400
            Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Andy Burns <usenet@andyburns.uk> - 2026-10-11 10:01 +0100
              Monochrome and readability (was: Re: Wow - Oracle Linux - 10+ Gigabyte ISO !) Nuno Silva <nunojsilva@invalid.invalid> - 2026-10-11 10:15 +0100
                Re: Monochrome and readability The Natural Philosopher <tnp@invalid.invalid> - 2026-10-11 10:37 +0100
                Re: Monochrome and readability c186282 <c186282@nnada.net> - 2026-10-12 01:06 -0400
                Re: Monochrome and readability Andy Burns <usenet@andyburns.uk> - 2026-10-12 10:12 +0100
                Re: Monochrome and readability Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-10-12 21:08 +0000
                Re: Monochrome and readability John Ames <commodorejohn@gmail.com> - 2026-10-12 14:50 -0700
                Re: Monochrome and readability Rich <rich@example.invalid> - 2026-10-15 02:51 +0000
                Re: Monochrome and readability c186282 <c186282@nnada.net> - 2026-10-13 00:58 -0400
                Re: Monochrome and readability Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2026-10-12 16:27 +0000
                Re: Monochrome and readability Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-10-12 21:14 +0000
                Re: Monochrome and readability c186282 <c186282@nnada.net> - 2026-10-13 01:37 -0400
                Re: Monochrome and readability "Carlos E.R." <robin_listas@es.invalid> - 2026-10-13 12:50 +0200
              Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-10-11 10:37 +0100
              Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-10-11 21:31 +0000
            Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! The Natural Philosopher <tnp@invalid.invalid> - 2026-10-11 10:31 +0100
    Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Andy Burns <usenet@andyburns.uk> - 2026-09-15 14:40 +0100
    Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-15 17:24 +0000
    Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-09-16 01:50 +0000
      Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! Leroy H <lh@somewhere.net> - 2026-09-16 02:31 +0000
      Re: Wow - Oracle Linux - 10+ Gigabyte ISO ! rbowman <bowman@montana.com> - 2026-09-16 06:25 +0000

csiph-web