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-dbcache not working as intended in core 0.12 (?)
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Topic: -dbcache not working as intended in core 0.12 (?) (Read 787 times)
AlexGR
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-dbcache not working as intended in core 0.12 (?)
March 18, 2016, 10:03:31 PM
Last edit: March 22, 2016, 12:31:51 PM by AlexGR
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by
ABCbits
(2)
#1
Launching 0.12 bitcoin-qt in linux with -dbcache=2048
SSD = around
1-2m
to see wallet
mechanical = around
4-5m
to see wallet
...similar very slow times with -dbcache=1024.
Launching 0.12 bitcoin-qt with -dbcache=0
SSD and mechanical = 10-15 secs at most.
-dbcache=0 works way faster, betraying some kind of problem in the way caching works.
gmaxwell
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Re: -dbcache not working as intended in core 0.12 (?)
March 18, 2016, 10:18:13 PM
Last edit: March 20, 2016, 02:38:56 AM by gmaxwell
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by
ABCbits
(3)
#2
Quote from: AlexGR on March 18, 2016, 10:03:31 PM
-dbcache=0 works way faster, betraying some kind of problem in the way caching works.
No, it's way faster because the initial startup tests are truncated when the cache is too small. (Because they undo a bunch of blocks in memory and redo them... they need enough memory to hold that intermediate state)
AlexGR
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Re: -dbcache not working as intended in core 0.12 (?)
March 18, 2016, 10:30:16 PM
#3
Aha... Makes sense then...
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