From: Wojciech Kromer <wojciech.kromer@dgt.com.pl>
To: linuxppc-embedded@ozlabs.org
Subject: Re: Strange results with changing HZ
Date: Fri, 09 Dec 2005 11:33:50 +0100 [thread overview]
Message-ID: <43995D8E.2050500@dgt.com.pl> (raw)
In-Reply-To: <200511211243.13519.david.jander@protonic.nl>
Dnia 2005-11-21 12:43, Użytkownik David Jander napisał:
>On Monday 21 November 2005 08:44, Wojciech Kromer wrote:
>
>
>>My system is:
>> - 2.4.25 kernel from denx.de
>> - uclibc (gcc 3.4.2) + busybox
>> - changed HZ to 1000
>> - rebuild kernel only
>>
>>AFAIR there souldn't be any need to recompile user apps.
>>
>>
>
>Just an uneducated guess, but are you sure uclibc doesn't depend on HZ at all?
>Some things might be just straight syscalls, others might be implemented in
>userspace (inside uclibc)... for example alarm(1) programming an alarm on
>jiffies+1/HZ, and HZ being compiled in from kernel headers ?
>I may just be talking rubbish though.
>
>
Hmm, after recompiling whole uclibc stuff it seem to work same.
There should be kernel problem. Sleep & select works fine, but alarm
works 10 times faster.
Anyone tries to change HZ to 1000?
prev parent reply other threads:[~2005-12-09 10:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-21 7:44 Strange results with changing HZ Wojciech Kromer
2005-11-21 11:43 ` David Jander
2005-12-09 10:33 ` Wojciech Kromer [this message]
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