Hi Matija,
Leveraging page cache yields good results and if accounted for can provide you
with performance increase on read side
I would like to leverage the page cache to improve read performance. How this
can be done?
Best Regards,
Julian.
On Mon, 13 Mar 2017 03:42:3
Hello,
We are using Cassandra 2.1.13. We are calculating node CPU utilization using
the below formula,
CPUUsage = CPURate / (AvailableProcessors*100)
CPURate = (x2-x1)/(t2-t1),
where x2 and x1 are the values of the attribute ProcessCpuTime at the time t2
and t1 respectively.
W
Hello,
I was going through this presentation and the Slide-55 caught my attention.
i.e) "Throttled down compactions during high load period, throttled up during
low load period"
Can we throttle down compactions without a restart?
If this can be done, what are all the parameters(JMX
Hello,
I have created a column family for User File Management.
CREATE TABLE "UserFile" ("USERID" bigint,"FILEID" text,"FILETYPE"
int,"FOLDER_UID" text,"FILEPATHINFO" text,"JSONCOLUMN" text,PRIMARY KEY
("USERID","FILEID"));
Sample Entry
(4*003, 3f9**
Hello,
We have commented out "concurrent_compactors" in our Cassandra 2.1.13
installation.
We would like to review this setting, as some issues indicate that the default
configuration may affect read/write performance.
https://issues.apache.org/jira/browse/CASSANDRA-8787
https://issues.
Hello,
We are using Cassandra 2.1.13 with each node having a NVMe disk with the
configuration of Total Capacity - 1.2TB, Alloted Capacity - 880GB. We would
like to increase the default value of 32 for the param concurrent_reads. But
the document says
"(Default: 32)note For workloads with
her customer 100 is. The better approach is to
establish a baseline for when these metrics start to indicate a serious issue
is occurring in that particular app. Basically when people notice a problem,
what did these numbers look like in the minutes, hours and days prior? That's
the way to
Hello,
I am working on setting up a monitoring tool to monitor Cassandra Instances.
Are there any wikis which specifies optimum value for each Cassandra KPIs?
For instance, I am not sure,
What value of "Memtable Columns Count" can be considered as "Normal".
What value of the same has to be
