kswapd0 consuming 50% of cpu

[JD]

On 11/26/2012 06:33 AM, Bruno Wolff III wrote:
> On Mon, Nov 26, 2012 at 00:20:02 -0700,
>   JD <jd1008 at gmail.com> wrote:
>> Is this normal for the kswapd to consume 50% of cpu?
>> And why would it do that?
>> This is the first time I have seen this.
>> Kernel is kernel-3.6.6-1.fc16
>>
>>   24 root      20   0     0    0    0 R 50.1  0.0 117:08.40 kswapd0
>
> There have been problems with kswapd in 3.7 kernels, though I haven't 
> seen it on 3.6 kernels.
>
> https://bugzilla.redhat.com/show_bug.cgi?id=866988 is tracking the 
> issue for 3.7 kernels. Maybe what you are seeing is related.
>
Great!!! 3.6 kernels have another problem.
They do not first send a hard reset to sleeping hard drives, before 
committing write operations or issuing read commands, leading to 
read/write failures. I have already posted this, which had falsely led 
me to think my drives were failing.
This is why I decided to download source of kernel 3.7.0-rc6.git from 
fc19 and build it on my fc16, in the hopes of a better kernel. But 
no.... it has the kswap bug eating 50% of cpu.
It is obvious that hardly any extensive testing goes into fedora before 
release, in the attitude that the lab rats (us) will do that.
Has this been the culture of the fedora developers form the beginning?
Sorry.... but I stray off topic...