Today I tried to download a large file (12 Gib) and save it to a folder on an NTFS drive using Transmission bit-torrent client. When the download reached approximately 60-70% Transmission started stalling - window began graying out periodically, download speeds frantically jumped up and down. The
top command showed that the
mount.ntfs process was using 98-99% of of my quad-core (!) CPU. Restarting Transmission or rebooting did not help.
NTFS drive is internal and mounted through
UUID=XXXXXXXXXXXX /media/COMMON ntfs rw,auto,users,exec,nls=utf8 0 0
Then I installed qBittorrent v. 3.0.9 and downloaded the same file without such problems, although CPU usage levels were still rather high IMO - up to 50% sometimes. My system runs on quad-core processor (Intel Core 2 Quad Q9300, 2.50 GHz) with 8 Gb of RAM, i.e. the problem is not caused by lack of resources.
Ubuntu version - 13.04 b2, Transmission client - 2.77 (14031).
NB Earlier I did notice occasionally that my system slowed down during torrent downloads, but didn't pay enough attention to investigate. So I guess it's a recurring problem with Transmission and/or