, but as somebody here may know this, ] Why in case
of small RA even large reads (bs=128k) are converted to multiple small reads?
Regards,
Kyrill
________
From: kurt greaves
Sent: Tuesday, May 8, 2018 2:12:40 AM
To: User
Subject: Re: compaction: huge number of random reads
I
If you've got small partitions/small reads you should test lowering your
compression chunk size on the table and disabling read ahead. This sounds
like it might just be a case of read amplification.
On Tue., 8 May 2018, 05:43 Kyrylo Lebediev,
wrote:
> Dear Experts,
>
>
> I'm observing strange be
Dear Experts,
I'm observing strange behavior on a cluster 2.1.20 during compactions.
My setup is:
12 nodes m4.2xlarge (8 vCPU, 32G RAM) Ubuntu 16.04, 2T EBS gp2.
Filesystem: XFS, blocksize 4k, device read-ahead - 4k
/sys/block/vxdb/queue/nomerges = 0
SizeTieredCompactionStrategy
After da
