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Too slow transfer files to usb pendrive


New Member
Hi everybody,

When I try to copy any file upper to 300 MB, more o less, to a pendrive, it begins to transfer quickly but when it achieves 99% (it can show 100% but the process has not finished and I can see the process working with iotop) it keeps waiting for several minutes and, finally, the transfer comes to end.

I have Linux mint 19.1 (based on Ubuntu 18.04 LTS). Kernel 4.15.0-20-generic.


Active Member

As seen on another thread it's because of the system's IO cache. It looks like you are writing data really fast but in fact you a only filling the system's cache. Then you have to wait for the system to finish the transfer from the cache to the pendrive.

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