ikruglov

typedef enum { XXH_bigEndian=0, XXH_littleEndian=1 } XXH_endianess;
#ifndef XXH_CPU_LITTLE_ENDIAN   // It is possible to define XXH_CPU_LITTLE_ENDIAN externally, for example using a compiler switch
static const int one = 1;
#   define XXH_CPU_LITTLE_ENDIAN   (*(char*)(&one))
#endif

usage:
XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN;

taken from https://github.com/Cyan4973/xxHash/blob/master/xxhash.c

ikruglov

#!/usr/bin/perl

# This script expects /proc/zone_info file as input.
# $ perl calc-reclamation-watermarks.pl < /proc/zoneinfo

# The output should look something like the following:
# pagesize: 4096
#
# node 0 high:                                       449.76 MB            471605248 bytes       115138 pages
# node 0 low:                                        374.80 MB            393003008 bytes        95948 pages

ikruglov

package main

import (
    "fmt"
    "unsafe"
    "reflect"
)

func main() {
    arr := make([]interface{}, 10)

ikruglov

package main

import (
    "fmt"
    "unsafe"
    "reflect"
)

func main() {
    var arr [10]string

ikruglov

perl redis_fork_vs_anyevent.pl 10000 100
N: 10000, DATA LENGTH: 100
                 s/iter             fork   anyevent_redis anyevent_hiredis
fork               8.37               --             -26%             -91%
anyevent_redis     6.19              35%               --             -87%
anyevent_hiredis  0.780             974%             693%               --

N: 1000, DATA LENGTH: 1000
                   Rate             fork   anyevent_redis anyevent_hiredis
fork             1.28/s               --             -59%             -94%