With 2.6.24-18-rt the problem is still there. I will now check the kernel from the hardy proposed repository.
Best regards Matthias On Thu 26/06/08 14:26 , Alessio Igor Bogani [EMAIL PROTECTED] sent: > @lueschem, > > Good catch! > > Could you test with last -rt kernel available in hardy-upgrades, > please? > Thanks! > > -- > Latency regression with real time kernel and usb subsystem > > https://bugs.launchpad.net/bugs/217617You received this bug notification > because you are a direct subscriber > of the bug. > > Status in Source Package "linux" in Ubuntu: Triaged > > Bug description: > Binary package hint: linux-image-2.6.24-16-rt > > Description: Ubuntu hardy (development branch) > Release: 8.04 > > Package: > linux-image-2.6.24-16-rt: > Installed: 2.6.24-16.30 > Candidate: 2.6.24-16.30 > > Expected behaviour: > Working with usb devices should not have a big impact on the real time > performance. > Observation with kernel 2.6.24-16-rt: > The test program cyclictest reports big latencies (up to 1ms) as soon as > for example an usb stick gets inserted. The big latencies can also be > reproduced by executing the "lsusb" command. > Additional observation: > Ubuntu Gutsy Gibbon (2.6.22-14-rt) did not suffer from this problem. > "lsusb" had no influence on the real time performance. > P.S.: Thanks a lot for the great Ubuntu -rt kernel! Please let me know if I > can provide additional information. > > -- Latency regression with real time kernel and usb subsystem https://bugs.launchpad.net/bugs/217617 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
