Hey Victor, > For sure 23 msec is terrible; I was so surprised to see that! So was I man :) On my old Dell inspiron 6400, coreduo with 2.6.37, i am running quite stable at 2.3ms (as in no xruns, at all). it's a semi-slow machine, with 1 sketchy PCI bus, too. It has been recycled into a rackmount, and has "on/off" operation. It's still good enough though, to run several VSTi's at once, some effects chains, sooperlooper and a sampler. I never have problems with it. i use it live (with my band). RT runs like crap on it, so i used 2.6.37 with BFS. I'm very impressed with recent kernels, using a non-RT kernel seems to not be a problem. although, most of the time, they do require tweaking. i won't be excited about RT-kernels, until i see 2.6.38-rt ~ that should be a good one! I recycle junk laptops - ie: busted display / keyboard / failed GPU / etc ~ useless to most people, but they are easily converted into dedicated music gear. (synth-modules, VSTi hosts, FX rack). So i am often working with "sub-standard" equipment. surprisingly most of the time you can tune them quite well ~ and get very reasonable performance. RT can misbehave on some gear so i use BFS scheduler in those corner cases. I mostly will use Zen-kernel (www.zen-kernel.org) as that kernel can be tuned up very well, and has all of the bellz and whistles. > Yes Lenovo Thinkpad are famous for having good performance... and furthermore the T410s is "Ubuntu certified". However I experience hang on with the 2.6.33.7.2-rt kernel, but I have a touchscreen (input = 4 fingers multitouch working natively under Maverick... really great) and I suspect the mutitouch screen is responsible of this. Hopefully the performaces og the preempt are great! I have heard lenovo laptops are quite nice for running linux. :) ...in this case it could be your multi-touch, but it also could be your video card. . On my one machine if i use a compositor (compiz, metacity, etc) it randomly will have soft lockups. All of the audio stuff still will work but the display goes down the drain. On another machine, an older version of BFQ ( I/O scheduler ), would potentially cause lockups. (although i had thought that it was my ATI card) both of those machines are quite stable now though. :) jordan -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html