Database performance improvements #1057

Job	Run time
Documentation	5m 34s
System (1.20.x, cluster, dir)	11m 20s
System (1.20.x, cluster, btrfs)	11m 20s
System (1.20.x, cluster, lvm)	12m 9s
Client (1.20.x, ubuntu-latest)	24s
System (1.20.x, cluster, zfs)	13m 9s
Code	6m 42s
Client (1.20.x, macos-latest)	43s
System (1.20.x, cluster, ceph)	16m 13s
Client (1.20.x, windows-latest)	2m 10s
System (1.20.x, cluster, random)	14m 1s
System (1.20.x, standalone, dir)	22m 36s
System (1.20.x, standalone, btrfs)	21m 21s
System (1.20.x, standalone, lvm)	39m 6s
System (1.20.x, standalone, zfs)	42m 32s
System (1.20.x, standalone, ceph)	1h 14m 6s
System (1.20.x, standalone, random)	35m 36s
System (stable, cluster, dir)	10m 39s
System (stable, standalone, dir)	20m 48s
System (tip, cluster, dir)	11m 58s
System (tip, standalone, dir)	21m 11s
	6h 33m 38s

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