Hi All, I have a doubt regarding the workqueue scheduling. I am using the workqueue for processing the Rx Interrupt data. I am calling schedule_work() on receiving the Rx interrupt from hardware. I calculated the time between calling the schedule_work() and workqueue task actually getting executed, Here I see many cases of less than 100 us(It is fairly good). But sometimes I see 10’s of ms and a lot in the 100’s of ms. I have seen over 0.5 secs too. I would like to know why does sometimes kernel takes longer time(in milli seconds) to schedule it? Is there any way to reduce this time gap? My code: static void my_workqueuetask(struct work_struct *work) { printk("In %s() \n",__func__); mutex_lock(&bh_mutex); //Do something here mutex_unlock(&bh_mutex); } static irqreturn_t my_irq_handler(int irq, void *dev) { ……; if(Rx Interrupt) schedule_work(&rx_work); return IRQ_HANDLED; } -- Thanks, Sekhar