Hello, I encountered another problem which seems to be related to flushing: When there runs an application which does very little but contiguous writes (like bittorrent client), copying from disk to a thumb drive fills the memory with the data to be written to fat32 fs, and it seems that the memory pressure causes the reiser4 writes to be flushed immediately, which results in a huge slowdown. In my case the thumb drive is able to write about 10MB/s, but after a while, when the RAM fills up, the speed drops to 3MB/s, because the hard drive is busy writing.
Regards, -- Jindrich Makovicka
