mironovdm

This tool can read current or change default HCI_LE_AUTOCONN_TIMEOUT value for Bluetooth adapter on Linux. The default value is defined for the kernel 5.15 at include/net/bluetooth/hci.h:

#define HCI_LE_AUTOCONN_TIMEOUT	msecs_to_jiffies(4000)	/* 4 seconds */

and it can be too low if the advertising interval for a device is high (for power saving).

You can also change the value in /etc/bluetooth/main.conf, line LEAutoconnecttimeout. The value in ms and will be applied at boot or when bluetooth service is restarted.

The tool changes timeout to hardcoded value 16000ms. You can change value NEW_LE_AUTOCONN_TIMEOUT in the lower source file to required value .

mironovdm

<sys/time.h>

int gettimeofday(struct timeval *restrict tv, struct timezone *restrict tz);

<time.h>

int clock_gettime(clockid_t clockid, struct timespec *tp);
int timespec_get(struct timespec *ts, int base);

mironovdm

"Hello world" web server benchmarks
HW: Intel Core i7-4700HQ, 8Gb DDR3

Ubuntu 18.04.2 LTS WSL, Python 3.6.7

w= - workers
lat= - avg. latency

SERVER                            ~RPS             
-------------------------------------------

mironovdm

struct sockaddr {
    unsigned short    sa_family;    // address family, AF_xxx
    char              sa_data[14];  // 14 bytes of protocol address
};


/* IPv4 AF_INET */
struct sockaddr_in {
    short            sin_family;   // e.g. AF_INET, AF_INET6
    unsigned short   sin_port;     // e.g. htons(3490)

mironovdm

class DictWithAttributeAccess(dict):

    def __getattr__(self, key):
        return self[key]

    def __setattr__(self, key, value):
        self[key] = value


class AttrDict: