The downside is that if it works, the drive will erase all of the free space, so there is no possibility of recovering anything that was deleted in error. If it works, the drive will erase lots of blocks ready for the next write and the much slower erase before write will be avoided. When it was new, it was all erased, so it was faster.īut most USB flash drives don't support trim. Its only erasing ~3-4mb/s, so that's all it can write. In the background, the flash disk is performing slow erase cycles to be able to write your new data. Its a limitation of the flash drive, even though its USB 2 and might in theory reach 40Mb/sec before it reached the bus limit.įor the first few seconds, the ~80mb/s you see is the file being read to your RAM. Last edited by irenicus09 on Tue 4:46 am edited 1 time in total HIRD Link Power Management (LPM) SupportedĬan't get debug descriptor: Resource temporarily unavailable dev/sda1 on /media/removable type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro)īus 001 Device 014: ID 0781:5567 SanDisk Corp.
I/O size (minimum/optimal): 512 bytes / 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes
Here's some information related to my thumb drive:ĭisk /dev/sda1: 7.5 GiB, 8002715648 bytes, 15630304 sectors
So I've been wondering is the slow transfer speed a limitation of the usb drive or is it due to some mis-configuration? My cousins used to tell me that on Windows transfer speeds are way faster than Linux but I honestly haven't touched Windows in half a decade now so can't really confirm that. As soon as the transfer starts, for the first few seconds (may be 5-10s) the transfer speed averages around ~80mb/s and after that it drops to ~3-4mb/s. So instead of the usual 'cp' command I've been using rsync mainly because it has an interesting progress bar and a few useful features but not sure in terms of performance if its any different.Īnyway while using rsync to transfer a large ~5GB file to a usb, I noticed a few things. Posted: Mon 1:46 pm Post subject: Slow USB transfer speed Gentoo Forums Forum Index Other Things Gentoo Gentoo Forums :: View topic - Slow USB transfer speed
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