Disks benchmarks 1/2 way done. Showing Avg read 2.3 MB/sec Avg write 1.8 MB/sec Avg access time 450 msec
Does this seem slow for a seagate 4tb USB 3 external drive? Mark On Fri, Jul 15, 2022, 11:53 AM Mark Phillips <m...@phillipsmarketing.biz> wrote: > It may be a cockpit error. The USB drive is brand new, and I assumed > formatted to vfat. It turns out it is ntfs. I reformatted the drive to > ext4, and I am running benchmarks. > > Initial results from hdparm (on a different machine - SurfacePro 4 running > Ubuntu > Timing cache reads: 9598.53 MB/sec > Buffered disk reads: 6.47 MB/sec > > Waiting for disks benchmark on the target machine. > > Mark > > On Fri, Jul 15, 2022, 10:21 AM Robert Citek <robert.ci...@gmail.com> > wrote: > >> Indeed, that sounds really slow: >> >> ( 138GB * 1000MB/GB ) / (26hr * 60min/hr * 60s/min ) = 1.5 MB/s ~ 12 Mbps >> >> That's in the USB1.x range. If you use USB3.0 and can get 100MB/s write >> speed, you'd be done in about 6 hours. >> >> Have a look at hdparm to get some info on read/write performance of your >> drive: >> >> >> https://linuxconfig.org/hard-drive-speed-test-using-linux-command-line-and-hdparm >> >> Good luck and let us know what you discover. >> >> Regards, >> - Robert >> >> >> >> On Fri, Jul 15, 2022 at 10:48 AM Michael Ewan <michaelewa...@gmail.com> >> wrote: >> >> > Are you using a USB3 drive and a USB3 port, the speed of the interface >> is >> > what I would think of first. >> > >> > On Fri, Jul 15, 2022 at 8:41 AM Mark Phillips < >> m...@phillipsmarketing.biz> >> > wrote: >> > >> > > I have an Ubuntu 18.04 system with two drives in an lvm with one >> logical >> > > root partition. I am trying to back up the contents of the drives (ie >> /) >> > to >> > > an external usb drive using rsync. It is taking a really long time. >> After >> > > 26 hours of continuous operation I have only transferred 138 GB out >> of 2+ >> > > TB, so I am looking at about 16 days to complete the transfer. >> > > >> > > My rsync command is: >> > > sudo rsync --no-compress --info=progress2 -avAXEWSlHh >> > > >> > > >> > >> --exclude={'/run','/mnt','/swapfile','/boot','/dev','/proc','/sys','/run','/mnt','/media','/lost+found','/swapfile.extended','/tmp'} >> > > / '/media/mark/Seagate Portable Drive/tsunami-backups-Jul_13_17-39/' >> > > >> > > Any suggestions on how I can speed this up and not lose any data? >> > > >> > > Thanks! >> > > >> > > Mark >> > > >> > >> >
