尊龙凯时人生就是搏

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#include <stdio.h>
#include <pthread.h>

#define NUM_THREADS 4

void *calculate(void *arg) {
    // ÅÌËãÂß¼­

    return NULL;
}

int main() {
    pthread_t threads[NUM_THREADS];
    
    for (int i = 0; i < NUM_THREADS; i++) {
        pthread_create(&threads[i], NULL, calculate, NULL);
    }

    for (int i = 0; i < NUM_THREADS; i++) {
        pthread_join(threads[i], NULL);
    }

    return 0;
}

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#include <stdio.h>
#include <pthread.h>

void *calculate(void *arg) {
    // ÉèÖÃCPUÇ׺ÍÐÔ
    cpu_set_t cpuset;
    CPU_ZERO(&cpuset);
    CPU_SET(2, &cpuset); // ½«Ḭ̈߳󶨵½CPU½¹µã2
    pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset);

    // ÅÌËãÂß¼­

    return NULL;
}

int main() {
    pthread_t thread;
    pthread_create(&thread, NULL, calculate, NULL);
    pthread_join(thread, NULL);

    return 0;
}

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#include <stdio.h>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>

int main() {
    int fd = open("data.txt", O_RDWR);
    struct stat sb;
    fstat(fd, &sb);
    char *data = mmap(NULL, sb.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);

    // ¶ÁдÊý¾Ý

    munmap(data, sb.st_size);
    close(fd);

    return 0;
}

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RAIDÊÖÒÕ¿ÉÒÔ½«¶à¸ö´ÅÅÌ×éºÏ³ÉÒ»¸öÂß¼­¾í £¬Ìá¸ß´ÅÅÌI/OµÄЧÂʺÍÈÝ´íÐÔ¡£ÒÔÏÂÊÇÒ»¸ö¼òÆÓµÄRAIDÉèÖãº

# ½¨ÉèRAID×°±¸
mdadm --create /dev/md0 --level=5 --raid-devices=4 /dev/sda1 /dev/sdb1 /dev/sdc1 /dev/sdd1

# ÃûÌû¯RAID×°±¸
mkfs.ext4 /dev/md0

# ¹ÒÔØRAID×°±¸
mount /dev/md0 /mnt

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