Streams: reduce listpack max size to 2k to speedup range queries.
Streams: reduce listpack max size to 2k to speedup range queries.

Listpack max size is a tradeoff between space and time. A 2k max entry
puts the memory usage approximately at a similar order of magnitude (5
million entries went from 96 to 120 MB), but the range queries speed
doubled (because there are half entries to scan in the average case).

Lower values could be considered, or maybe this parameter should be
made tunable.

PKRoma/redis,Sciumo/redis,nnog/redis,oranagra/redis,neomantra/redis,yossigo/redis,soloestoy/redis,charsyam/redis,yossigo/redis,pmem/redis,oranagra/redis,ofirluzon/redis,soveran/redis,rogerchina/redis,spinlock/redis,neomantra/redis,ctripcorp/redis,oranagra/redis,neomantra/redis,oranagra/redis,ctripcorp/redis,charsyam/redis,Sciumo/redis,soveran/redis,antirez/redis,charsyam/redis,yossigo/redis,ofirluzon/redis,soloestoy/redis,PKRoma/redis,ofirluzon/redis,nnog/redis,Sciumo/redis,PKRoma/redis,pmem/redis,neomantra/redis,spinlock/redis,pmem/redis,rogerchina/redis,rogerchina/redis,charsyam/redis,oranagra/redis,ofirluzon/redis,soveran/redis,neomantra/redis,spinlock/redis,pmem/redis,antirez/redis,yossigo/redis,ctripcorp/redis,soloestoy/redis,spinlock/redis,GitHubMota/redis,yossigo/redis,GitHubMota/redis,PKRoma/redis,charsyam/redis,soveran/redis,nnog/redis,antirez/redis,nnog/redis,antirez/redis,rogerchina/redis,GitHubMota/redis,PKRoma/redis,ctripcorp/redis,GitHubMota/redis,Sciumo/redis,soloestoy/redis,ofirluzon/redis,soloestoy/redis