All Questions
Tagged with performance-tuning optimization
15 questions
0
votes
1
answer
131
views
product import is broke behind cloudflare
Im having trouble to resolve my database errors and how to optimize it. Coz of the slowness of my server (mostly querries i believe), my imports turns with a cloudflare error code. (Cloudflare blocks ...
- 3
3
votes
1
answer
2k
views
Debugging and fine-tuning the linux process scheduler
When debugging sporadic web application slowdowns, I've found that all the processes have quite high maximum scheduling delay.
# perf sched record -- sleep 10 && perf sched latency --sort max
...
- 348
8
votes
2
answers
1k
views
what is the IOPS behavior when partitions of single disk are used in an LVM?
I have an ubuntu 14.04.1 LTS server which have LVM(backed by hardware RAID5) with logical volume and a volume group named "dbstore-lv" and "dbstore-vg" which have sdb1 sdb2 sdb3 created from same sdb ...
- 628
4
votes
0
answers
1k
views
Identifying bottleneck with nginx VPS load testing
I'm trying to optimize a Digital Ocean droplet (512mb), testing using loader.io
I'm testing on my homepage, which is HTTPS / PHP. I setup FastCGI page cache, which got me from 100 req/sec to 2,000 ...
- 41
6
votes
1
answer
5k
views
Nginx performance when running multiple instances on the same machine
I'm trying to understand the performance impact of having multiple nginx instances (masters) running on the same machine, rather than having them all load into a single instance using different server ...
- 167
4
votes
4
answers
25k
views
MySQL taking too much CPU
Below is my .cnf file and if I see my CPU consumption 99.99% of it my the mysqld commands. The MySQL server is connected from remote machines that update data in it frequently, but I make sure that ...
- 143
0
votes
0
answers
5k
views
Apache Worker MPM / PHP-FPM Tuning
I have a VPS running CentOS 6.5, Apache 2.2, PHP-FPM v5.4 and MySQL 5.5. I take advantage of APC and Memcache. The VPS has 8 cores and 8GB RAM. I'm running a medium volume site (15,000 users / day, ...
- 164
4
votes
1
answer
4k
views
Tuning Apache KeepAlive Timeout for HTTPS
My website forces HTTPS everywhere and has an average first load time of 3-5 seconds. Thanks to caching, repeat load time is 0.8 seconds.
The SSL negotiation takes 150-300ms on my server, so I want ...
- 151
-1
votes
1
answer
458
views
Server optimization for long running script [duplicate]
I have a system running on a remote VPS whose main feature is a long running script (it could run for about 10 hours, depending on the user input).
The following are some of its features:
Database ...
- 273
0
votes
2
answers
2k
views
virtual memory optimization on exchange server 2010
Hi I did some Google searching but came up blank
I know mycomputer/computer > Properties > advance System settings > Advance[tab] > Settings[Performance] > Advance [Tab] > Change > customsige
...
- 1
1
vote
3
answers
13k
views
Strategy to optimize raid cache
HP SmartArray have "Accelerator Ratio: XX% Read / YY% Write", that configures how much cache ram dedicated for read, and how much for write.
Is there way to find best proportion on alive server in ...
- 663
18
votes
3
answers
9k
views
Building a 1,000M row MySQL table
This question is reposted from Stack Overflow based on a suggestion in the comments, apologies for the duplication.
Questions
Question 1: as the size of the database table gets larger how can I tune ...
- 283
2
votes
3
answers
2k
views
How to optimize iptables for high DNS traffic?
How to optimize iptables for high DNS traffic? I have a dedicated linux server acting as bridged firewall using iptables. Recently behind firewall was deployed DNS server with high load and firewall ...
- 2,324
1
vote
4
answers
3k
views
Lower Maximum Possible Memory Usage
I've been using MySQLTuner to optimize my database, and the only problem I am having is:
[!!] Maximum possible memory usage:
14.8G (126% of installed RAM)
I'm not sure what I should be changing ...
- 1,701
3
votes
6
answers
1k
views
MySQL performance tuning
I'm looking for a succinct list of common pitfalls and optimizations for tuning a MySQL server as used for mid-size websites.
In general, the type of advice I'm looking for here is information that ...