I asked a question about exceptions, and I am very annoyed by those who say that throwing is slow. I have asked in the past in How exceptions work behind the scenes, and I know that in normal code
Tag: time
Performance – How to get time costs from HDFS read data from HDFS from spark
Spark’s timeline contains:
>Scheduler delay
>Task deserialization time
>Random play time
>Performer calculation time
>Random play write time
>Result serialization time
>Result time
It
Erlang performance analysis using FPROF within the CPU time
I am trying to use fprof for better performance visualization of my software. However, the default is to use wall clock measurement, but I want to use cpu time to measure it. Therefore, I am in the
Performance – In the React Single Page Appset, what method can be measured to measure the full display of the page?
Or, if it is difficult to make precise measurements, is there a measurement that is proportional to the front-end improvement? We want to initiate an event when this happens (for real user monitori
R Parallel, will you create a new cluster every time you use Parallel Apply?
I use the parLapply function on 20 cores. I think other functions such as parSapply are the same…
First, pass a cluster as a parameter Is it bad practice to give a function so that the func
Haproxy sometimes chooses a wrong ACL
I am using HAProxy 1.4.22. I have the following haproxy.conf file:
global
maxconn 100000
daemon
defaults
mode http
retries 1
contimeout 8000
clitimeout 120000
srvtimeout 120000
stats
Cassandra – RPC timeout error when deriving data from CQL
I am trying to export data from cassandra using CQL client. The column family contains about 100000 rows. When I use the COPY TO command to copy dta to a csv file, I get the following rpc_time out
There are a lot of Fin_Wait2, Close_Wait, Last_Ack and Time_Wait in Haproxy
We are running haproxy for about 100,000 concurrent users. But we see a lot of FIN_WAIT2, CLOSE_WAIT, LAST_ACK and TIME_WAIT in the netstat output. This output is on the 8G ubuntu-12.04 node.
How to automate SVN merge when the automation test passes?
After each submission to the’trunk’, we will automatically perform a series of tests on the trunk. When these tests pass, I want to automatically merge them into the “tests-passed” Branching. When
When I don’t want to use aggregate, I should use Pivot to convert SQL Server 2008 row value to column names?
I am trying to master the manipulation of table data into a more visually attractive output format. This may be part of the problem, because what I want may be for a separate reporting software. <