cmd/tempo-vulture: share rand.Rand instance across multiple searches #1763
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grafana#1760 noted that creating a new rand.Rand every time a random number is generated causes a poor distrubution of the search space, where numbers appear 7x more frequently than they do when using a shared rand.Rand instance. This is demonstrated using the following Go playground link: https://go.dev/play/p/EkhINRfOO5p This commit changes Vulture to use a shared rand.Rand instance instead of creating a new one each time a search or read is performed.
rfratto
requested review from
joe-elliott,
annanay25,
mdisibio,
mapno,
yvrhdn and
zalegrala
as code owners
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#1760 noted that creating a new rand.Rand every time a random number is generated causes a poor distrubution of the search space, where numbers appear 7x more frequently than they do when using a shared rand.Rand instance.
This is demonstrated using the following Go playground link: https://go.dev/play/p/EkhINRfOO5p
This commit changes Vulture to use a shared rand.Rand instance instead of creating a new one each time a search or read is performed.
Closes #1760.