https://bugs.kde.org/show_bug.cgi?id=384561
Jaime Torres <jtam...@gmail.com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |CONFIRMED
--- Comment #6 from Jaime Torres <jtam...@gmail.com> ---
With iotop or ksysguard and plots about I/O, there are huge differences.
with cp/mv, no process is waiting for io, with dolphin plasma spends a lot of
time waiting for io (column io> value 99%).
with cp/mv, the i/o plots are more or less constant at some i/o speed , but
with dolphin, at the beginning there are "mountains" and later on only peaks.
In the code:
* the cp/mv copy buffer is 128Kib allocated in the heap and is memory aligned
* the current buffer used by dolphin is 32Kib in the stack and is not
guaranteed to be memory aligned.
I've tried changing the buffer to the heap, with 128Kib, and aligned and it
improves a little bit the problem at the beginning, but after a while the
performance drops and the peaks are shown again in ksysguard.
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