Messages in this thread | | | Date | Sat, 27 Nov 2010 16:16:10 +0100 | From | Mikael Pettersson <> | Subject | [BUG] 2.6.37-rc3 massive interactivity regression on ARM |
| |
The scenario is that I do a remote login to an ARM build server, use screen to start a sub-shell, in that shell start a largish compile job, detach from that screen, and from the original login shell I occasionally monitor the compile job with top or ps or by attaching to the screen.
With kernels 2.6.37-rc2 and -rc3 this causes the machine to become very sluggish: top takes forever to start, once started it shows no activity from the compile job (it's as if it's sleeping on a lock), and ps also takes forever and shows no activity from the compile job.
Rebooting into 2.6.36 eliminates these issues.
I do pretty much the same thing (remote login -> screen -> compile job) on other archs, but so far I've only seen the 2.6.37-rc misbehaviour on ARM EABI, specifically on an IOP n2100. (I have access to other ARM sub-archs, but haven't had time to test 2.6.37-rc on them yet.)
Has anyone else seen this? Any ideas about the cause?
/Mikael
| |