Re: lug-bg: Kakvo e jiffies time

[Nikolay Mitev]

Здравейте,

Yavor Shahpasov wrote:

Macha se da napisha edin script deto da pokazva uptime na opredelen 
process

za tselta cheta
/proc/pid/stat, vav 22 element pishe che e vremeto ot boot vav jiffie, 
vremeto ot boot go gepia on /proc/stat, no kakvo po diavolite e giffies

pitah google no samo source ot kernel mi vadi, iavno e che search 
engines ne sa mnogo umni, ili az ne pitam pravilno, dali pak jeeves ne 
znae .

Niakoi madar kernel haker moje li da pomogne.

Бе не съм нито мъдар, нито хакер, ама мисля, че мога да ти помогна.

/linux/kernel/itimer.c

/static void *jiffiestotv*(unsigned long *jiffies*, struct *timeval* **value*)
{
        *value*->*tv_usec* = (*jiffies* % *HZ*) * (1000000 / *HZ*);
        *value*->*tv_sec* = *jiffies* / *HZ*;
        return;
}
или по-простичко, секунди == jiffies / HZ

За i386 архитектури HZ == 100

linux/include/asm-i386/param.h:

#ifndef HZ
#define HZ 100
#endif
Use the source :-)

cheers,
face
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