Re: Time to update the hardware

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 2022-03-10 at 11:13 -0800, Samuel Sieb wrote:
> On 3/10/22 02:47, Patrick O'Callaghan wrote:
> > On Wed, 2022-03-09 at 11:25 -0800, Samuel Sieb wrote:
> > > On 3/9/22 02:44, Patrick O'Callaghan wrote:
> > > > Thanks for the detailed info. My current SSD is a Samsung 860
> > > > EVO
> > > > (2TB)
> > > > so for comparison I did this:
> > > > 
> > > > $ time dd if=/dev/zero bs=1G count=23 of=Big
> > > > 23+0 records in
> > > > 23+0 records out
> > > > 24696061952 bytes (25 GB, 23 GiB) copied, 14.9873 s, 1.6 GB/s
> > > > 
> > > > real    0m15.087s
> > > > user    0m0.000s
> > > > sys     0m14.640s
> > > > 
> > > > However that's clearly not a reflection of actual I/O speed as
> > > > the
> > > > writes will have been cached.
> > > 
> > > You can use "conv=fdatasync" to make sure all data is written
> > > before
> > > giving the final result.
> > 
> > Didn't seem to make a difference:
> > 
> > $ time dd if=/dev/zero bs=1G count=23 conv=fdatasync of=Big
> > 23+0 records in
> > 23+0 records out
> > 24696061952 bytes (25 GB, 23 GiB) copied, 15.3153 s, 1.6 GB/s
> 
> Are you using btrfs with compression enabled?

Btrfs in the default F35 configuration, so no compression.

poc
_______________________________________________
users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx
Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/
List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
Do not reply to spam on the list, report it: https://pagure.io/fedora-infrastructure



[Index of Archives]     [Older Fedora Users]     [Fedora Announce]     [Fedora Package Announce]     [EPEL Announce]     [EPEL Devel]     [Fedora Magazine]     [Fedora Summer Coding]     [Fedora Laptop]     [Fedora Cloud]     [Fedora Advisory Board]     [Fedora Education]     [Fedora Security]     [Fedora Scitech]     [Fedora Robotics]     [Fedora Infrastructure]     [Fedora Websites]     [Anaconda Devel]     [Fedora Devel Java]     [Fedora Desktop]     [Fedora Fonts]     [Fedora Marketing]     [Fedora Management Tools]     [Fedora Mentors]     [Fedora Package Review]     [Fedora R Devel]     [Fedora PHP Devel]     [Kickstart]     [Fedora Music]     [Fedora Packaging]     [Fedora SELinux]     [Fedora Legal]     [Fedora Kernel]     [Fedora OCaml]     [Coolkey]     [Virtualization Tools]     [ET Management Tools]     [Yum Users]     [Yosemite News]     [Gnome Users]     [KDE Users]     [Fedora Art]     [Fedora Docs]     [Fedora Sparc]     [Libvirt Users]     [Fedora ARM]

  Powered by Linux