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Hope For Fixing Longstanding Linux I/O Wait Bug
DaGoodBoy writes "There has been a long standing performance bug in Linux since 2.6.18 that has been responsible for lagging interactivity and poor system performance across all architectures. It has been notoriously difficult to qualify and isolate, but in the last few days someone has finally gotten a repeatable test case! Turns out the problem may not even be disk related, since the test case triggers the bug only by transferring data either between two processes or threads. The test results are very revealing. The developer ran regressions all the way back to version 2.6.15 that demonstrate this bug has more than doubled the time to run the test in 2.6.28. Many, many people working at improving the desktop performance of Linux will be very happy to see this bug die. I know that I, personally, will find a way to send the guy that found this test case his beverage of choice in thanks. Please spread the word and bring some attention to this issue so we can get it fixed!"
Dang! I was going for First Post, but my machine was stuck in some weird I/O wait state.
When our name is on the back of your car, we're behind you all the way!
bugzilla.kernel.org?
The real "Libtards" are the Libertarians!
I'm sure kernel.org appreciates these links. Now instead of fixing the bug they're putting out fires in the data center...great job slashdot.
If this get resolved is there any chance the fix could get ported to Windows? I just had my Dad's XP laptop completely freeze after I plugged in a bog-basic USB thumbdrive. The desktop sprang to life only after I unplugged it. I wish some of the AC Windows fanboys who were hassling me here last week were around to see it. "Ready for the desktop" my ass.
OS not fast enough? Just upgrade your hardware components, preferably to a new, top-of-the-line system.
Oh wait... that's the Windows way of doing things.
Yeah, exactly, that's why volunteers have been hard at work to find and fix the (published, admitted) bug. Just like Win... Oh, wait.
It must also affect servers, because none of the links is transferring data either.
Kevin Smith on Prince
not HAL-9000 intelligence, which would be bad for data anyway
HAL-9K intelligence doesn't pose any problems to the data - it's the *operators* that need to be concerned, especially when giving the system instructions that could potentially conflict with each other.
Please stand clear of the doors, por favor mantenganse alejado de las puertas
That's because you're not transferring data between yourself and another thread.
But he is transferring data between himself and another sockpuppet.
I trrrrrrrrrrrrrrranssssssssfer data betwwwwwwwwwwwwwwwwwwwwwween threads alllllll the time......
Don't blame me, I voted for Baltar.
This somewhat deflates the excitement evident in the OP. I mean, I know what he's talking about, these apparently random 1-2 second FREEZES while working, but if the guys in LKML arn't talking about it it's probably not being really worked on.
I know, it looks like someone's pet bug made the cover of /. today. For the record, here is my pet bug:
https://launchpad.net/ubuntu/+bug/1
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You should enable DMA.
Change is certain; progress is not obligatory.
and here I was thinking that those pauses were because I had firefox open with >5 tabs for >1 hour.