Hotplug slowness

elyk · 01-05-2006, 10:31 AM

I don't need to reboot my computer too often, but over the past few days I've been swapping out winmodems to see if they'll work. I noticed that hotplug seems to take a really long time to load. Then, when I was checking my logs while trying to get a modem to work I noticed this in /var/log/messages

Code:

Jan  5 07:05:27 slackbox kernel: pci_hotplug: PCI Hot Plug PCI Core version: 0.5
Jan  5 07:05:27 slackbox kernel: shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
Jan  5 07:05:27 slackbox kernel: pci_hotplug: PCI Hot Plug PCI Core version: 0.5
Jan  5 07:05:27 slackbox kernel: pciehp: PCI Express Hot Plug Controller Driver version: 0.5

These 4 lines are repeated around 39 times over about 15 seconds. It also occurs before I was swapping winmodems, so that shouldn't be the cause of the problem. I don't have any PCI Express devices, either. What's wrong here?

-elyk

Okie · 01-05-2006, 01:38 PM

forget the winmodems if they are causing hotplug problems, get an external serial hardware modem, Linux and KDE's KPPP work great with them...

shadowhunter · 01-05-2006, 01:41 PM

Hotplug speeds up when you compile you drivers in your kernel...

Really speeds up.

Check it for yourself.

Geert.

shilo · 01-05-2006, 06:14 PM

Along the same lines, if you don't need those modules, recompile without them. Then you won't have issues with them.

In the future, hotplug speed will not be an issue. Hotplug is being deprecated. Just gotta wait for PV to:

1) Release Slackware as 2.6 default
2) Start using a newer UDEV/kernel combo

Might be awhile, though. PV seems to like stable (one of the reasons a lot of people like Slackware), and UDEV seems to change FAST. I believe UDEV is turned off by default right now, even.

migs · 01-06-2006, 05:54 AM

Quote:

Originally Posted by elyk

I don't need to reboot my computer too often, but over the past few days I've been swapping out winmodems to see if they'll work. I noticed that hotplug seems to take a really long time to load. Then, when I was checking my logs while trying to get a modem to work I noticed this in /var/log/messages

Code:

Jan  5 07:05:27 slackbox kernel: pci_hotplug: PCI Hot Plug PCI Core version: 0.5
Jan  5 07:05:27 slackbox kernel: shpchp: Standard Hot Plug PCI Controller Driver version: 0.4
Jan  5 07:05:27 slackbox kernel: pci_hotplug: PCI Hot Plug PCI Core version: 0.5
Jan  5 07:05:27 slackbox kernel: pciehp: PCI Express Hot Plug Controller Driver version: 0.5

These 4 lines are repeated around 39 times over about 15 seconds. It also occurs before I was swapping winmodems, so that shouldn't be the cause of the problem. I don't have any PCI Express devices, either. What's wrong here?

-elyk

you can add pciehp and shpchp to your /etc/hotplug/blacklist to keep them from loading. speeds things up right along when booting.

cwwilson721 · 01-06-2006, 08:26 AM

Quote:

Originally Posted by shilo

Might be awhile, though. PV seems to like stable (one of the reasons a lot of people like Slackware), and UDEV seems to change FAST. I believe UDEV is turned off by default right now, even.

I think you are correct, Shilo. I know I had to turn it on in my recompile to get my Alps Touchpad to work. On the upside, tho, my USB devices startup alot faster.

elyk · 01-07-2006, 03:05 AM

Quote:

Originally Posted by shadowhunter

Hotplug speeds up when you compile you drivers in your kernel...

Well... the winmodem is why I'm still using the default kernel. It needs a 2.4.x kernel to run so I haven't bothered to recompile it. I should be done with that modem in a few days (back to sweet, sweet broadband at college) so I'll give the 2.6.15 kernel a try.

-elyk

b0rgri0t · 01-09-2006, 04:55 PM

If one were to enable UDEV then would you disable hotplug?

shilo · 01-09-2006, 05:46 PM

b0rgri0t- not yet.