Re: Re: udev-208 eats CPU

On 02/12/14 22:15, M=E5ns Rullg=E5rd wrote:
> Andrew Gaylard <[email protected]> writes:
>
>> On 01/19/14 01:20, Matt Turner wrote:
>>> On Sun, Jan 12, 2014 at 12:33 PM, Andrew Gaylard <[email protected]> wr=
ote:
>>>> Hi,
>>>>
>>>> I have just upgraded to the latest build of udev (208) on my Alpha b=
ox.
>>>> It appears to run at 100% of CPU.  When I enable debugging, I get th=
ese
>>>> lines in /var/log/messages:
>>>>
>>>>       unable to receive ctrl connection: Function not implemented
>>>>
>>>> This appears to be due to the lack of the accept4 call.
>>>>
>>>> However, my kernel is gentoo-sources-3.10.7 and my glibc is 2.17,
>>>> so I'd expect this call to be there.... Right?
>>> Yes, as Alan said accept4 has been supported in the kernel since v3.2=
.
>>>
>>> I'm running udev-208 on a couple of alphas without trouble, so this
>>> problem should be fixable.
>>>
>>> Is it possible that your glibc was built against linux-headers older
>>> than v3.2? Seems unlikely, but it's probably the first thing I'd
>>> check.
>> Yup, you were right.  I had sys-kernel/linux-headers 2.6.<something>.
>> Upgrading that to 3.9 and then rebuilding glibc and udev fixed it.
>>
>> Thanks!
>>
>> I'm a bit puzzled why "emerge -uva @system"  and "emerge -uva @world"
>> didn't automatically upgrade linux-headers.  I had to explicitly reque=
st it.
>> But hey, it's working now...:)
> Try adding -D to those flags.  That usually does the trick.
>
Oh wow.  This box was installed with Gentoo back in 2005.
There's a *lot* to catch up! This'll build for a while...:)

Thanks a lot for the tip -- it definitely does the trick.

--=20
Andrew Gaylard