kandi X-RAY | GCache Summary
kandi X-RAY | GCache Summary
Top functions reviewed by kandi - BETA
- Put the value in the cache
- Put entry
- Decode entry
- Encodes a value
- Read string map
- Gets the value associated with the given key
- End the benchmark with the given tag
- Start the bench
- Prints a line to standard output
- Write map
GCache Key Features
GCache Examples and Code Snippets
Trending Discussions on GCache
and I appreciate in advance for your help on this. I have a VPS with the following specs:
OS: Centos 7.x CPU Model: Common KVM processor CPU Details: 6 Core(2200 MHz) Distro Name: CentOS Linux release 7.9.2009 (Core) Kernel Version: 3.10.0-1160.25.1.el7.x86_64 Database: Server type: MariaDB Server version: 10.2.38-MariaDB - MariaDB Server
And here is mu sqltuner output from letting it run after 48 hours and uptime....
ANSWERAnswered 2021-May-24 at 18:37
Rules for memory allocation.
- Do not allocate so much RAM that swapping will occur. Swapping is terrible for MySQL/MariaDB performance.
- Do adjust
innodb_buffer_pool_sizesuch that most of RAM is in use during normal time and even for spikes in activity. (I often say "set it to 70% of available RAM", but you are asking for more details.)
- Do not bother changing other settings; they add to the complexity of "getting it right".
There are 3 situations (based on innodb_buffer_pool_size and dataset size):
- Tiny dataset -- buffer_pool is bigger than necessary --> wasting some of RAM, but so what; it is not useful for anything else. And it give you some room for growth.
- Medium-sized dataset -- Most activity is done in RAM; the system will run nicely.
- Big dataset -- The system may be I/O-bound. Adding RAM is a costly and brute force solution. However, some software techniques (eg, better indexes) may help, such as this for WordPress and WooCommerce.
We are trying to use Gstreamer's mpegts pluging to record a video stream stream using the following Gstreamer example code https://gstreamer.freedesktop.org/documentation/mpegtsmux/mpegtsmux.html?gi-language=c. When we compile the code using
gcc mpegtstest.c -o mpegtstest `pkg-config --cflags --libs gstreamer-1.0 gstreamer-mpegts-1.0` -v everything works as expected and the program records with no issues. We are now trying to compile the code using
cmake generates correctly but
make fails with error.
/usr/bin/ld: cannot find -lgstreamer-mpegts-1.0.
ANSWERAnswered 2021-Feb-26 at 01:08
Based on your
cmake output, I'd guess that you're using a version of
FindGStreamer.cmake cribbed from WebKit. If that's the case, the variable you want to use is
GSTREAMER_MPEGTS_INCLUDE_DIRS. Note the lack of a hyphen in the variable name.
If that's not the case, use a simple
message() statement before the use of a variable to show you its value during the
We recently upgraded from mysql 5.6 to mysql 8.0 on a few servers, one of the servers was fine, and has had no problems, but it has significantly less load than one of our other servers which has been running out of memory.
Our server launches, then grabs 300 connections, and keeps them open with a C3P0 pool to the mysql server.
We were running these servers on AWS on MySQL 5.6 with the same overridden parameters on 8GB of RAM, when we upgraded to MySQL 8.0.21 we started running out of RAM in about 1 day. We grew the server to 32Gb but didn't change the parameters. It's gone over 15 GB used and still going up.
We're pretty sure it's related to the per connection thread memory, but not sure why. From looking at MySQL tuner it looks like the variables that control per thread memory are:...
ANSWERAnswered 2021-Jan-18 at 19:41
You're calculating the per-thread memory usage wrong. Those variables (and
tmp_table_size which you didn't include) are not all used at the same time. Don't add them up. And even if you were to add them up, at least two might be allocated multiple times for a single query, so you can't just sum them anyway.
Basically, the memory usage calculated by MySQLTuner is totally misleading, and you shouldn't believe it. I have written about this before: What does "MySQL's maximum memory usage is dangerously high" mean by mysqltuner?
If you want to understand actual memory usage, use the PERFORMANCE_SCHEMA, or the slightly easier to read views on it, in the SYS schema.
The documentation for PS or SYS is pretty dense, so instead I'd look for better examples in blogs like this one:
I need to have 3 different redis dbs, so I have 3 different redis clients, like so:...
ANSWERAnswered 2020-Sep-13 at 17:29
Redis persistences are configured in server side not client side. And it is not possible to have different persistence policy for one Redis instance.
For you case, if you want to have different persistence policy(RDB, AOF, or just disabled), you can set up multiple redis servers and create different redis client for those servers.
For node-redis, you can create different client for different servers as below:
I have three node Galera cluster setup with MariaDB, I see a repeating message for one of the node where it desyncs itself from cluster and resyncs within few seconds. This message is repeating every hour. Though it is just a notice, I would like to understand the reason. Configuration on all the servers is same. Does anyone has idea why this happens ? or if anybody faced similar problem of this sort. Below are the details.
MariaDB version 10.3.12
Galera version: 25.3.23-1
OS: RHEL 7.4
State transfer mechanism: default
Below is my Galera configuration on the node which has above mentioned observation....
ANSWERAnswered 2020-Aug-31 at 04:35
I could find out, I missed the fact that periodic backup was running on the node via Mariabackup tool. During that time node de-syncs itself from cluster for consistency.
ANSWERAnswered 2019-Jan-05 at 01:22
Babel's plugin-proposal-class-properties is probably what you're looking for. It enables support for static variables/methods inside the class declaration.
I have an old django 1.9 application connected to a mysql 5.7 database. Sometime I get this error:...
ANSWERAnswered 2020-Mar-25 at 12:07
I noticed you SET Open Files handles in ubuntu to 1024 when you ran ulimit -n 1024. Your system needs many more available Open File handles to support your 4650 innodb tables. Suggestion ulimit -n 24000 and then check settings with ulimit -a (to list current limits). I am looking forward to analyzing your data next week from production instance.
Suggestion for your ulimit -a to consider please
ulimit -n 24000 # from 1024 to enable more OS file handles to be active.
The above is dynamic with Linux OS. Stop/Start services would have access to the handles. To make this persistent across OS shutdown/restart, review this url for similar OS instructions. These instructions set 500000 for the file-max, please set your capacity at 24000 for now. ulimit please set to 24000, which will allow MySQL to use requested limits and have spares for other apps
Here are my mysqltuner results:...
ANSWERAnswered 2020-Jan-30 at 05:48
innodb_buffer_pool_size to about 70% of available RAM. The 4.4G suggested by mysqltuner will handle all your current data. If you expect it to grow, then give it more. This setting will probably help with I/O (not CPU).
(Actually "InnoDB Read buffer efficiency: 95.00% (920105182 hits/ 968548737 total)" says that the paultry 128M buffer_pool seems to handle the "working set" adequately.)
You cannot tune for "optimize for better CPU usage". You can find the slow queries and work on indexing (especially 'composite' indexes) and query formulation. Those will help with CPU.
hi my server cpu mysql usage 280 % my cnf file...
ANSWERAnswered 2018-Nov-09 at 15:12
Suggestions to consider for your my.cnf-ini [mysqld] section
I have MySQL 5.7.23 on Ubuntu 18.04. It's a VPS with 2 vCores and 8 GiB of RAM. The server is hosting two WordPress websites. Each website has a database with the size of 7,5 MB. So there is 15 MB database overall.
I was trying to optimize the database using mysqltuner. It recommends me everytime the same thing:...
ANSWERAnswered 2018-Aug-22 at 17:03
You should take mysqltuner recommendations with a grain of salt. Its suggestions are not made with any knowledge of your database or your queries, and sometimes they are just guesses based on incomplete information.
The suggestion to increase the tmp_table_size might be based on reading the status values that indicate some temp tables were created on disk.
No vulnerabilities reported
You can use GCache like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the GCache component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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