Re: [gentoo-alpha] udev-208 eats CPU

[Andrew Gaylard]

On 01/19/14 01:20, Matt Turner wrote:
> On Sun, Jan 12, 2014 at 12:33 PM, Andrew Gaylard <ag@××××××××.org> wrote:
>> Hi,
>>
>> I have just upgraded to the latest build of udev (208) on my Alpha box.
>> It appears to run at 100% of CPU.  When I enable debugging, I get these
>> 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 request it.
But hey, it's working now...:)

-- 
Andrew Gaylard