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

Groups > linux.debian.user > #208467

Re: Speed Problem Copying Files

From Martin <keine-eile@online.de>
Newsgroups linux.debian.user
Subject Re: Speed Problem Copying Files
Date 2019-05-09 16:00 +0200
Message-ID <xVRKy-6Iz-9@gated-at.bofh.it> (permalink)
References (2 earlier) <xVNQB-4nq-5@gated-at.bofh.it> <xVO0i-4qM-3@gated-at.bofh.it> <xVOtk-4Q8-17@gated-at.bofh.it> <xVPpn-5oW-1@gated-at.bofh.it> <xVQEO-65h-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

Am 09.05.19 um 14:43 schrieb Lothar Schilling:
> Am 09.05.2019 um 13:27 schrieb Martin:
>> [..]
>>> hdparm -tT /dev/sda
>>> /dev/sda:
>>>  Timing cached reads:   13348 MB in  2.00 seconds = 6683.42 MB/sec
>>>  Timing buffered disk reads: 1014 MB in  3.00 seconds = 337.72 MB/sec
>>>
>>> iotop -o (for rsync and cp)
>>> Total DISK READ :       0.00 B/s | Total DISK WRITE :     476.15 K/s
>>> Actual DISK READ:       0.00 B/s | Actual DISK WRITE:     487.86 K/s
>>>   TID  PRIO  USER     DISK READ  DISK WRITE  SWAPIN     IO>    COMMAND
>>> 19531 be/4 root        0.00 B/s  476.15 K/s  0.00 % 99.24 % rsync
>>> --info=progress2 /daten/testfile /daten/testfile2
>>>
>>> iotop -o (for dd)
>>> Total DISK READ :       0.00 B/s | Total DISK WRITE :     297.68 M/s
>>> Actual DISK READ:       0.00 B/s | Actual DISK WRITE:     297.68 M/s
>>>   TID  PRIO  USER     DISK READ  DISK WRITE  SWAPIN     IO>    COMMAND
>>> 19557 be/4 root        0.00 B/s  297.68 M/s  0.00 % 99.99 % dd
>>> if=/dev/zero of=/daten/testfile bs=1G count=10 oflag=direct
>> Show us the 'dd if=/daten/testfile bs=1G oflag=direct of=/dev/null', please.
>> If this is as slow as this ~480k/s above, check your disk's health status. Like with smartmontools or some disk-utility software.
>>
>> Martin
>>
> Fast enough...
> 
> dd if=/daten/testfile bs=1G oflag=direct of=/daten/testfile2
> 10+0 Datensätze ein
> 10+0 Datensätze aus
> 10737418240 Bytes (11 GB, 10 GiB) kopiert, 72,7297 s, 148 MB/s
> 
> dd if=/daten/testfile of=/dev/null
> 20971520+0 Datensätze ein
> 20971520+0 Datensätze aus
> 10737418240 Bytes (11 GB, 10 GiB) kopiert, 36,6887 s, 293 MB/s
> 

Well, this looks quite consistent.
How does your system load look, like in top? Do you see any high 'wait' or 'system' numbers?

Then, I have seen a thing called 'systemd.resource-control'. Which I have close to zero knowledge about. Can systemd throttle a copy command? May be some one from this list can tell.

Back to linux.debian.user | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-09 11:00 +0200
  Re: Speed Problem Copying Files Jonas Smedegaard <jonas@jones.dk> - 2019-05-09 11:20 +0200
    Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-09 11:50 +0200
      Re: Speed Problem Copying Files Kevin DAGNEAUX <kevin.dagneaux@fiitelcom.fr> - 2019-05-09 12:00 +0200
        Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-09 12:30 +0200
          Re: Speed Problem Copying Files Martin <keine-eile@online.de> - 2019-05-09 13:30 +0200
            Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-09 14:50 +0200
              Re: Speed Problem Copying Files Martin <keine-eile@online.de> - 2019-05-09 16:00 +0200
              Re: Speed Problem Copying Files "Thomas Schmitt" <scdbackup@gmx.net> - 2019-05-09 17:20 +0200
      Re: Speed Problem Copying Files Jonas Smedegaard <jonas@jones.dk> - 2019-05-09 12:30 +0200
        Re: Speed Problem Copying Files Jonas Smedegaard <jonas@jones.dk> - 2019-05-09 13:00 +0200
          Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-09 13:20 +0200
            Re: Speed Problem Copying Files Keith Christian <keith1christian@gmail.com> - 2019-05-09 13:30 +0200
              Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-09 14:50 +0200
  Re: Speed Problem Copying Files Gene Heskett <gheskett@shentel.net> - 2019-05-09 16:20 +0200
    Re: Speed Problem Copying Files "Jeremy Nicoll" <jn.ml.dbn.25@letterboxes.org> - 2019-05-09 16:30 +0200
      Re: Speed Problem Copying Files Dan Ritter <dsr@randomstring.org> - 2019-05-09 17:00 +0200
      Re: Speed Problem Copying Files Gene Heskett <gheskett@shentel.net> - 2019-05-09 17:00 +0200
  Re: Speed Problem Copying Files David Christensen <dpchrist@holgerdanske.com> - 2019-05-10 07:50 +0200
    Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-10 11:00 +0200
      Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-13 10:40 +0200
        Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-13 11:00 +0200
          Re: Speed Problem Copying Files Tixy <tixy@yxit.co.uk> - 2019-05-13 11:20 +0200
          Re: Speed Problem Copying Files Curt <curty@free.fr> - 2019-05-13 11:40 +0200
          Re: Speed Problem Copying Files Michael Stone <mstone@debian.org> - 2019-05-14 13:40 +0200
        Re: Speed Problem Copying Files Tixy <tixy@yxit.co.uk> - 2019-05-13 11:00 +0200
        Re: Speed Problem Copying Files David Christensen <dpchrist@holgerdanske.com> - 2019-05-14 02:30 +0200
          Re: Speed Problem Copying Files Lothar Schilling <ls@proasyl.de> - 2019-05-14 09:40 +0200
            Re: Speed Problem Copying Files David Christensen <dpchrist@holgerdanske.com> - 2019-05-14 18:30 +0200
    Re: Speed Problem Copying Files Michael Stone <mstone@debian.org> - 2019-05-14 13:30 +0200
      Re: Speed Problem Copying Files David Christensen <dpchrist@holgerdanske.com> - 2019-05-14 21:20 +0200
        Re: Speed Problem Copying Files Michael Stone <mstone@debian.org> - 2019-05-14 22:10 +0200

csiph-web