Title
#users-market-data
m

Marcus Horsley

10/21/2022, 12:20 PM
Hi guys, I am currently running QuestDB AMI and trying to loop through a dataframe to insert some test data; I am flushing the
sender
each iteration; intermittently I get errors like
Got error: Could not flush buffer: Connection reset by peer (os error 104)
can anyone point me in the right direction to understand this?
Jaromir Hamala

Jaromir Hamala

10/21/2022, 12:26 PM
hi Marcus, is there anything in server logs?
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Marcus Horsley

10/21/2022, 12:29 PM
ah something interesting,
No space left [size=16777216, fd=207]
Jaromir Hamala

Jaromir Hamala

10/21/2022, 1:10 PM
so the root cause is not enough space on a disk?
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Marcus Horsley

10/21/2022, 1:17 PM
well, we have cairo.root=/mnt/efs/dbset, ie. it should be writing to an efs drive, which has near unlimited space
1:17 PM
but it feels like it's writing to the ami disk rather than efs, is there any other settings i need to change?
Jaromir Hamala

Jaromir Hamala

10/21/2022, 1:29 PM
how do you start the DB? perhaps you pass
-d
parameter pointing to a different location?
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Marcus Horsley

10/21/2022, 1:34 PM
with systemclt, we’re using the AWS ami
Jaromir Hamala

Jaromir Hamala

10/21/2022, 1:37 PM
is it writing to
/var/lib/questdb
?
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Marcus Horsley

10/21/2022, 1:48 PM
no appears to be writing to the EFS\
1:48 PM
maybe it's to do with EFS config, will investigate and rever t
Jaromir Hamala

Jaromir Hamala

10/21/2022, 1:49 PM
have you tried to benchmark it? I wonder how QuestDB performs on EFS. I don’t think we have ever tested it. I would be a bit worried about latency. but perhaps it’s ok.
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Marcus Horsley

10/21/2022, 1:50 PM
we're trying to do some benchmark tests, hence trying to insert some mock data
Nicolas Hourcard

Nicolas Hourcard

10/21/2022, 4:21 PM
let us know 🙂