On Tuesday, February 9, 2016, 1:43:51, alanb wrote: > Using gddrescue I created a 2TB disk image file from a good 2TB drive > onto a good 4TB drive, the performance at the start was as expected, > however once it reached about 1TB the performance dropped from about > 100-120Mb/s down to 3-5Mb/s.
I just noticed the exact same problem myself, except that for me transfer speeds drop when the file reaches around 128GB in size (which makes my jfs volumes unusable for storing local backup images). I did find this (I was looking at why jfscommit has high CPU usage): <http://sourceforge.net/p/jfs/mailman/message/27476050/>, but it appears that nothing has been done to address this. -- < Jernej Simončič ><><><><>< http://eternallybored.org/ > A Smith and Wesson beats four aces. -- Canada Bill Jones's Supplement ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Jfs-discussion mailing list Jfs-discussion@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jfs-discussion
