Messages in this thread | | | Date | Sat, 13 Mar 2004 11:34:37 -0800 | From | John Reiser <> | Subject | Re: finding out the value of HZ from userspace |
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Arjan van de Ven wrote: > On Thu, 2004-03-11 at 15:17, Micha Feigin wrote: > >>Is it possible to find out what the kernel's notion of HZ is from user >>space? >>It seem to change from system to system and between 2.4 (100 on i386) >>to 2.6 (1000 on i386). > > > if you can see 1000 from userspace that is a bad kernel bug; can you say > where you find something in units of 1000 ?
create_elf_tables() in fs/binfmt_elf.c tells every ELF execve(): NEW_AUX_ENT(AT_CLKTCK, CLOCKS_PER_SEC); which can be found by crawling through the stack above the pointer to the last environment variable.
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