Do I need "Unset CFQ IO Scheduler" Patch with F102A?

sck18 · 01/25/2011, 04:51 PM

I'm running the stable version of F102A Delta Dagger (v1.4.5-100) in the Preware feeds.

I was poking around in the patch feeds and came across "Unset CFQ IO Scheduler" which says it removes a problem in the Fxxx kernels when IO is set to other values than CFQ (such as Westwood in F102A).

The WebOS Internals Wiki (link below) does not indicate that this patch is needed.

Application:PsychoKernel - WebOS Internals

Does anyone know whether it would help?

Jakeeeee · 05:48 PM

Westwood is a TCP/IP Congestion handler. CFQ IO is like noop, anticipatory, CFQ, etc.

I think like some kernels are forced to CFQ because of Palm's coding, so this patch undoes that, so you can have a profile that uses anticipatory without it reverting it. I would use it.(and I do with AV8B)

sck18 · 01/25/2011, 05:34 PM

Thanks...and yep, you're right - I confused the IO Scheduler (CFQ/Anticipatory) with the TCP Congestion (Westwood).

F102A only allows noop and anticipatory as options in Govnah.

Installing now...

cwgtex · 01/27/2011, 09:17 AM

Quote:

Originally Posted by sck18

Thanks...and yep, you're right - I confused the IO Scheduler (CFQ/Anticipatory) with the TCP Congestion (Westwood).

F102A only allows noop and anticipatory as options in Govnah.

Installing now...

Don't do it! The patch description reads "This CAUSES problems for kernels such as Fxxx or warthog that have the io scheduler set to something other than cfq such as anticipatory."

sck18 · 01/27/2011, 10:05 AM

Hmm...so I did install it and haven't noticed any difference.

@cwgtex - I read it differently than you did, assuming that it is the CFQ override which causes problems. Installing this patch to unset CFQ would prevent the scheduler from always setting CFQ, enabling Fxxx to use anticipatory.

"Remove the CFQ override which forces the io scheduler to CFQ. This causes problems for kernels such as Fxxx or warthog that have the io scheduler set to something other than cfq such as anticipatory."

Of course since I have seen no change, I bet it has been built into the new kernels...too bad I can't find sufficient documentation.

WoodyTrain · 01/27/2012, 07:17 PM

So what is the status of this patch?

Is it recommended when running the current UberKernel on webOS 3.05?

I had the patch installed on 3.04, but after removing all my various patches i updated to 3.05. But was unable to install the patch. Whereas have all my other AUSMT webosinternals patches have installed just fine.

01/25/2011, 04:51 PM	#1 (permalink)
sck18 Member Join Date: Mar 2002 Location: NY Posts: 191 Likes Received: 0 Thanks: 9 Thanked 0 Times in 0 Posts	Do I need "Unset CFQ IO Scheduler" Patch with F102A? I'm running the stable version of F102A Delta Dagger (v1.4.5-100) in the Preware feeds. I was poking around in the patch feeds and came across "Unset CFQ IO Scheduler" which says it removes a problem in the Fxxx kernels when IO is set to other values than CFQ (such as Westwood in F102A). The WebOS Internals Wiki (link below) does not indicate that this patch is needed. Application:PsychoKernel - WebOS Internals Does anyone know whether it would help?
	Liked by

01/25/2011, 05:27 PM	#2 (permalink)
Jakeeeee Member Join Date: Jan 2010 Location: Clemson, SC Posts: 1,412 Likes Received: 73 Thanks: 123 Thanked 192 Times in 134 Posts	Westwood is a TCP/IP Congestion handler. CFQ IO is like noop, anticipatory, CFQ, etc. I think like some kernels are forced to CFQ because of Palm's coding, so this patch undoes that, so you can have a profile that uses anticipatory without it reverting it. I would use it.(and I do with AV8B) __________________ My apps: WebOS World Services \| Apollo Radio (Pandora Client) \| Skyrim database(coming later..?) Twitter: @jakemorrison24 Last edited by Jakeeeee; 01/25/2011 at 05:48 PM.
	Liked by Thanked By: sck18

01/25/2011, 05:34 PM	#3 (permalink)
sck18 Member Join Date: Mar 2002 Location: NY Posts: 191 Likes Received: 0 Thanks: 9 Thanked 0 Times in 0 Posts	Thanks...and yep, you're right - I confused the IO Scheduler (CFQ/Anticipatory) with the TCP Congestion (Westwood). F102A only allows noop and anticipatory as options in Govnah. Installing now...
	Liked by

01/27/2011, 10:05 AM	#5 (permalink)
sck18 Member Join Date: Mar 2002 Location: NY Posts: 191 Likes Received: 0 Thanks: 9 Thanked 0 Times in 0 Posts	Hmm...so I did install it and haven't noticed any difference. @cwgtex - I read it differently than you did, assuming that it is the CFQ override which causes problems. Installing this patch to unset CFQ would prevent the scheduler from always setting CFQ, enabling Fxxx to use anticipatory. "Remove the CFQ override which forces the io scheduler to CFQ. This causes problems for kernels such as Fxxx or warthog that have the io scheduler set to something other than cfq such as anticipatory." Of course since I have seen no change, I bet it has been built into the new kernels...too bad I can't find sufficient documentation.
	Liked by

01/27/2012, 07:17 PM	#6 (permalink)
WoodyTrain Member Join Date: Aug 2011 Posts: 37 Likes Received: 2 Thanks: 5 Thanked 17 Times in 2 Posts	So what is the status of this patch? Is it recommended when running the current UberKernel on webOS 3.05? I had the patch installed on 3.04, but after removing all my various patches i updated to 3.05. But was unable to install the patch. Whereas have all my other AUSMT webosinternals patches have installed just fine.
	Liked by

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