Redis get vs. mget Benchmark

0. Background

Scripts

#!/bin/bash

key="testkey"
value="testvalue"

int=0
while (($int <= 1024)); do
    echo -e $key$int $value
    redis-cli set $key$int $value
    let "int++"
done

#!/bin/bash

int=0
keys=""

while (($int < 64)); do
    keys="$keys",""testkey$int""
    let "int++"
done

redis-benchmark -n 100000 script load "redis.call("mget"$keys)"

System Info

[p1gd0g@p1gd0g-pc ~]$ screenfetch 

 ██████████████████  ████████     p1gd0g@p1gd0g-pc
 ██████████████████  ████████     OS: Manjaro 19.0.2 Kyria
 ██████████████████  ████████     Kernel: x86_64 Linux 5.4.31-1-MANJARO
 ██████████████████  ████████     Uptime: 1h 1m
 ████████            ████████     Packages: 1224
 ████████  ████████  ████████     Shell: bash
 ████████  ████████  ████████     Resolution: 1920x1080
 ████████  ████████  ████████     DE: GNOME 3.36.1
 ████████  ████████  ████████     WM: Mutter
 ████████  ████████  ████████     WM Theme: Matcha-sea
 ████████  ████████  ████████     GTK Theme: Matcha-sea [GTK2/3]
 ████████  ████████  ████████     Icon Theme: Papirus-Dark-Maia
 ████████  ████████  ████████     Font: Noto Sans 11
 ████████  ████████  ████████     Disk: 41G / 473G (10%)
                                  CPU: AMD Ryzen 5 3550H with Radeon Vega Mobile Gfx @ 8x 2.1GHz
                                  GPU: AMD RAVEN (DRM 3.35.0, 5.4.31-1-MANJARO, LLVM 9.0.1)
                                  RAM: 2237MiB / 6956MiB

Redis version

Redis server v=5.0.8 sha=00000000:0 malloc=jemalloc-5.2.1 bits=64 build=b2bf869b5247fdeb

1. get vs. mget

redis-benchmark -n 100000 script load "redis.call("get", "testkey0")"

====== script load redis.call("get", "testkey0") ======
  100000 requests completed in 0.65 seconds
  50 parallel clients
  3 bytes payload
  keep alive: 1

99.98% <= 1 milliseconds
100.00% <= 1 milliseconds
152905.20 requests per second

redis-benchmark -n 100000 script load "redis.call("mget", "testkey0")"

====== script load redis.call("mget", "testkey0") ======
  100000 requests completed in 0.66 seconds
  50 parallel clients
  3 bytes payload
  keep alive: 1

99.99% <= 1 milliseconds
100.00% <= 1 milliseconds
151975.69 requests per second

2. set vs. mset

3. What happended if keys=248?