... .com Subject: Re: Performance changes between 2.6.13 and 2 ... data points So, two processors, and multiple processes passing data back ... support, etc). There did seem (subjectively) > to be a slight improvement ... want to do is (re)install YDL5 and pull my app ...

linux-kernel - Sanders, Rob M. - Mar 25 2008 - 12:44

... .com Subject: Re: Performance changes between 2.6.13 and 2 ... data points So, two processors, and multiple processes passing data back ... support, etc). There did seem (subjectively) > to be a slight improvement ... time to run some test, and at this point I'm ...

linux-kernel - Sanders, Rob M. - Mar 27 2008 - 15:37

... upgraded from YDL4.0.91 (2.6.13 kernel) to > YDL6 ( ... shared memory to move data between the processes. When I use ... support, etc). There did seem (subjectively) > to be a slight improvement ... performance slowdow A lot has changed between 2.6.23 and ...

linux-kernel - Ray Lee - Mar 25 2008 - 12:41

... to be in I/O (between processes) bound. I hadn't ... kernel.org Subject: Re: Performance changes between 2.6.13 and 2. ... other components (a.o. libc and libpthread) stay the same. Booting ... http://www.bitmover.com/lmbench/ and http://members.optusnet.com.au/ ...

linux-kernel - Sanders, Rob M. - Mar 25 2008 - 09:52

... YDL4.0.91 with 2.6.13 kernel - normal speed > YDL6 ... tools/cfs-debug-info.sh and send me the output it ... kernel that has CONFIG_SCHED_DEBUG=y and CONFIG_SCHEDSTATS=y enabled. on the ... of the changes can affect performance. a third (and most comprehensive ...

linux-kernel - Ingo Molnar - Mar 28 2008 - 05:28

... YDL4.0.91 with 2.6.13 kernel - normal speed > YDL6 ... tools/cfs-debug-info.sh and send me the output it ... kernel that has CONFIG_SCHED_DEBUG=y and CONFIG_SCHEDSTATS=y enabled. on the ... of the changes can affect performance. a third (and most comprehensive ...

linux-kernel - Sanders, Rob M. - Mar 28 2008 - 06:32

... a 4-5X > slowdown in performance. Is this a singlethreaded or ... cause, but what might help is to compile and run lmbench2 ... kernel version differs between the two test runs, and that all ... http://www.bitmover.com/lmbench/ and http://members.optusnet.com.au ...

linux-kernel - Bart Van Assche - Mar 25 2008 - 09:25

On Tue, Mar 25, 2008 at 2:52 PM, Sanders, Rob M. ... bottleneck to be in I/O (between processes) bound. I hadn't thought ... is spent in just context switching and the application probably should be ... the number of context switches performed by all processes e.g. ...

linux-kernel - Bart Van Assche - Mar 25 2008 - 10:23