thedemonium / hdd_tests

Comparison of disks NVME vs SSD

Comparison of disks NVME vs SSD

#NVME Disks

• /dev/disk/by-id/nvme-SAMSUNG_MZQLB3T8HALS-00007_S438NC0R504906
• /dev/disk/by-id/nvme-SAMSUNG_MZQLB3T8HALS-00007_S438NC0R504914
• /dev/disk/by-id/nvme-SAMSUNG_MZQLB3T8HALS-00007_S438NC0R504919
• /dev/disk/by-id/nvme-SAMSUNG_MZQLB3T8HALS-00007_S438NC0R504920
• /dev/disk/by-id/nvme-SAMSUNG_MZQLB3T8HALS-00007_S438NC0R504923

#SSD Disks

• /dev/disk/by-id/ata-Samsung_SSD_860_PRO_4TB_S5G9NC0R700213H
• /dev/disk/by-id/ata-Samsung_SSD_860_PRO_4TB_S5G9NC0R700290W
• /dev/disk/by-id/ata-Samsung_SSD_860_PRO_4TB_S5G9NC0R700292B
• /dev/disk/by-id/ata-Samsung_SSD_860_PRO_4TB_S5G9NC0R700584R

#FIO Settings Test random read/writes

[global] bs=4K iodepth=16 direct=1 numjobs=4 group_reporting time_based

[random_rw] rw=randrw size=50G

#Сustom limits for pgbench

Container:

limits.cpu: "4"
limits.memory: 16GB

Postgres:

shared_buffers = 8GB
#huge_pages = try
work_mem = 32MB
maintenance_work_mem = 1GB
dynamic_shared_memory_type = posix
wal_level = replica
max_wal_senders = 3
checkpoint_timeout = 1200
wal_compression = on
max_wal_size = 8GB
min_wal_size = 80MB