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Just passing through…
From Trail of Tears Motorcycle Trip I’m writing this from my hotel room in Hopkinsville, Kentucky. The locals call this place Hop Town. As far as I can tell, there’s not a lot of hopping going on around here. It’s a nice enough town. It has the usual collection of WalMarts, Starbucks, and other chain…
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CFS change causes CPU insomnia
Continuing on from previous thoughts about why Linux 2.6.23 sleeps in shallow cpu idle states with Wifi active. I finally have it narrowed down to a scheduler change after v2.6.23-rc3. On an idle system with no Xorg started but Wifi active the CPU remains in the C2 state unneccessarily. PowerTOP 1.8 (C) 2007 Intel Corporation…
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Flakey Wireless + NFS != Good
Why would a flakey wireless connection cause login problems for a specific tty without affecting others? Why would the wireless connection affect local logins at all? These and many other questions may never be answered but at least the problems have a solution. If login problems weren’t enough the NFS mounts I had were causing…
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Followup on 2.6.23 idle wakeups
Well, I figured out that uhci_hcd was the culprit for the previous wakeups. uhci_hcd provides USB 1.1 support, which I can disable because my laptop is all USB v2. As you can see below the menu governor for 2.6.23-rc5 + hrt patch doesn’t work quite as well versus 2.6.23-rc4 + hrt patch because the CPU…
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SimpleShare Weirdness
Several days ago my SimpleShare desktop NAS stopped responding via NFS. Access to the web interface was still functional with no errors, a cursory disk check found no problems, rebooting the drive didn’t fix it. However, attempting to mount the drive over CIFS (samba) worked. After that NFS access worked again, for whatever reason. For…
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New wakeups from usb_hcd_poll_rh_status in 2.6.23-rc4
It seems other people are experiencing the same thing. Unfortunately, that guy didn’t get a response. Both of these readings were taken with no Xorg or Wifi running. The laptop is a Pentium M Centrino model. kernel 2.6.22-hrt6 PowerTOP 1.8 (C) 2007 Intel Corporation Collecting data for 15 seconds Cn Avg residency C0 (cpu running)…
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hrtimers is DA BOMB!
Last night, I patched a vanilla 2.6.22 kernel with the hrtimers code and I’m still finding all the magic things it can do. Two of the biggest things are the cpuidle governor and hpet support. cpuidle “menu” governor allows the cpu to drop into the lowest C-state possible without passing through any other states. The…
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gnome-games, Oh My!
Gentoo just stabilized Gnome 2.18, everybody should avoid the Expat landmine by running revdep-rebuild after the upgrade to avoid breakage from occuring. However, the Gnome upgrade is only tangently related to my problem. Of course, after I –sync’ed there was ~70 packages waiting to be installed. Digging through the install list I found a lot…