Hi there, On Fri, 07 Nov 2014, 12:57:43 +0100, Manfred Hollstein wrote:
On Fri, 07 Nov 2014, 12:15:15 +0100, Jan Engelhardt wrote:
On Monday 2014-11-03 15:27, Manfred Hollstein wrote:
Before, a whole bunch of messages arrived on my workstation without any significant delay; now, running the same on kernel version 3.17.1-1.2.g5c4d099 looks like one e-mail per second. [...] I have now installed kernel version 3.16.7-1.gdfcb69e-desktop (from Kernel:/openSUSE-13.2/standard) and performance is back to normal. I don't know if this is a networking or a file system issue
That is somewhat easy to figure out - download files into tmpfs (e.g. /dev/shm) and measure the two kernels.
yeah, in the meantime I almost narrowed it down to a fetchmail-only problem. Everything else (local file system access, NFS access) appears to perform at very similar numbers, it's just fetchmail that is annoyingly slow...
I just tried the new 3.18.0-2.g2b473fc-desktop kernel from Kernel:HEAD and the performance problems are gone. It looks like it's only a 3.17 problem. I'll put it into bugzilla. Cheers. l8er manfred