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Questions tagged [performance]

Questions about server hardware and software performance, or network performance.

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Fastest HDD/RAID setup to search trough 3TB of website files [closed]

On my site I have around 3TB of different data, site files and my .sql backups; I need to search trough these files multiple times with grep or ag (because is faster), but I don't know what would be ...
2
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1answer
74 views

Mariadb 1000% CPU [closed]

I have a big problem with my site (Laravel based), I have from 1000 to 1500 contemporary visitors, and I have a problem with mariadb, practically when people use filters, and other options that ...
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1answer
35 views

bonded ethernet NFS use both NIC's possible?

I have a box with two 1Gb NIC's in it, bonded. The type of bonding is "per connection" so each connection goes "to 1 nic" but if a process has multiple connections, it will share the bonded NIC's and ...
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0answers
12 views

How can I go about debugging my VPS' upload (POST) speeds?

I have just purchased a $20 VPS from DigitalOcean and I ran some tests on it after installing the LAMP (7.2 PHP, 5.7 MySQL, CentOS 7) and running the speedtest test: Retrieving speedtest.net server ...
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0answers
13 views

How does logstash-input-mongodb maximize batch_size performance?

i mongodb 1,000,000 count data send -> ElasticSearch receive. i setting info. input { mongodb { uri => 'mongodb://xxx.xxx.xxx.xxx/home' placeholder_db_dir => '/home/jskang/logstash/...
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9 views

Is Apache or Wildfly better at serving static content? [duplicate]

We're running Apache 2.4.34 and Wildfly 11.0.0.Final on Amazon Linux. Both applications run on the same machine. Our application has a number of static assets (image files, JS files, CSS field) and ...
0
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1answer
24 views

rsyslog writing to postgres. rsyslog process very high cpu, postgres very low cpu

I'm using rsyslog to write dns data to postgres. The messages are always quite short and similar to each other: <ip of host making dns request> <dns request> I use a regex to pull ip ...
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0answers
65 views

What is a “normal” latency/performance of inserts on mariadb or mysql?

Hadn't used MySQL family for years. Now need to move from OracleDB to either MariaDB or PostgreSQL. So on a similar "hardware" (Openstack VM: RHEL 7.3, 4HT cores of 2.5GHz Xeon E312xx, "local" SAN &...
1
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1answer
12 views

Why the 'uptime' command showing the load output faster than the 'w' command

Why the 'uptime' command showing the load output faster than the 'w' command. I am unable to use the 'w' command in high load environment but the 'uptime' shows the results more faster..
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0answers
64 views

File Server Resource Manager (FSRM) inconsistently triggering on a file screen rule

I've been exploring the capabilities of the FSRM -- specifically the File Screen Management feature -- to see how it works and what it can do. To test it out, I set up in a lab with some VMs. I ...
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0answers
16 views

High wa but no IO usage

My VPS is having extremely high wa (around 90), but there is no IO usage taking place. htop: iotop: nethogs: What can be the problem here?
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0answers
8 views

How do I help Cloudflare / Apache / Wordpress to cache 404 pages?

Using Newrelic I've found out that 65% of load on my web server was created from the 404 rendering of static resources, because the 404 page was rendered also for the missing static resources (jpg, ...
6
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1answer
93 views

HP dl360p G8 writes/latency with SSDs in raid very poor

I have a DL360P g8 server with a HPE p420i raid controller (2gb cache). We have noticed that writes to the SSDs via raid are incredibly slow. The drives in question I have in the arrays are: Volume 1 ...
3
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1answer
70 views

How to eliminate chunked response delay from NginX?

We have a cascade of two NginX reverse proxies in front of a Java web server. The first proxy runs on FreeBSD (11.1-RELEASE-p10) load balancers and proxies all internet traffic into the internal ...
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0answers
36 views

Performance issues with Kubernetes

I am having performance issues in kubernetes with my application. I have a nodejs application running inside a docker container in kubernetes, all it does it call a mongodb with a GET, there is quite ...
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3answers
57 views

Setting recursive permissions: how to increase performance?

We have a huge directory tree, many levels deep and with a (very) large number of small files at each level. From time to time we have large file data changes where parts of the tree are replaced and ...
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1answer
12 views

What are the split latency measurements produced by httping?

I've been using httping to monitor the performance of my load balancer. The httping utility accepts a -S argument which is briefly described in the man page: -S Split measured latency in time ...
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0answers
19 views

Docker - handle multiple Tomcat containers

I have the following setup in the company I am working: A Linux server running Tomcat with multiple contexts of the same java webapp. Although the webapp running on each context is pretty much the ...
0
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1answer
45 views

How to monitor/performance Jenkins server?

How to monitor Jenkins server and check the performance of the server. is there any tool to check regular or anything else.
6
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1answer
183 views

Nginx: Optimizing server response time for a HTTP cached website

I have a website with all of the pages served from nginx’s http cache and rarely invalidated or expired. The average total page download size is around 2 MB But despite being a static site with no ...
1
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1answer
106 views

NFS slow throughput

I have experienced some issues with less-than-expected throughput with NFS. After examining a number of options (endless googling), including raid setup, network interfaces etc, I wanted to test a ...
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0answers
54 views

Why is web app random high response times

We use Azure Web App service (S1) and our main page (quote/index) gets sporadic high response times; 5s - over 8 minutes! I installed Application Insights and Profiler trace shows the same section of ...
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0answers
83 views

Performance Issues Copying Files Over Network - Command Line/C#

We've been having some issues lately copying files from one Windows server to another (I'll refer to them as Server A and Server B) where the copy speeds are extremely slow when using any copy methods ...
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0answers
27 views

How to force raid1 mirror to stripe on read

I use RAID1 - mirror long time. I have beleaved yet, that RAID1 does stripping on read operation for improve the speed. While migrating form 160GB disk to 3TB mirror, I started the file copy, ...
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0answers
7 views

How Can I Determining Time for Samba Network Request Versus How It Returns a File?

Implemented Samba as a method for file sharing to some Windows servers, but a question constantly gets asked about performance. How can I break down the time it takes for Samba to first receive the ...
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0answers
80 views

Linux Bonding with 2x10G LAN poor performance in kernels after 4.13.x

Here is our setup a DELL server with two 10G LAN ports and our old kernel 4.13.4 serving static video content using nginx (~8000 active connections) with the bandwidth of around 15.5G (1.2Mpps) on ...
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0answers
14 views

Do memories from different manufacturers impact performance? Is there a way to measure it?

Memory in one of my systems: % lshw -C memory|grep vendor | grep -v NO | grep -v 'American Megatrends' | grep -v 'Intel' vendor: Samsung vendor: Samsung vendor: Micron ...
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0answers
48 views

SQL Server 2017, 2012 Express Edition Insert Select Performance Issue with very less data

Command 1: (Get Count from View1) Select Count(*) From View1 Results: ----------- 183 (1 row affected) Execution time = 11 seconds Command 2: (store the count in a table called Temp) Drop Table ...
9
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1answer
131 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 ...
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5answers
104 views

Configure JMeter to test a proxy service

I have developed a proxy service using ballerina language by referring the following [1] and [2]. It works perfectly fine. Now I want to run a load test via JMeter. That is JMeter should be configured ...
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1answer
62 views

Nginx performance drops significantly when I enable https (slower 30 times than http only) & 12 times slower than Apache https

I have an Angular website with static assets of around 1.5 mb and gzipped it is around 400 kb, I have nginx as my webserver & reverse proxy to the API server, when I test nginx with Apache ...
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1answer
19 views

Performance testing an Azure Netapp instance

We are looking to run a Netapp instance in Azure Ireland. The first time our cloud architect tried it performance was terrible. We therefore want to run some performance tests but are hitting a brick ...
2
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1answer
134 views

Intel NVME performance on Linux

I have an Intel 760P NVME drive hooked up to a Supermicro X11SRM-F with a Xeon W-2155 and 64GB of ddr4-2400 RAM. The specs for this drive claim 205K-265K IOPS (whatever 8GB span means) with about 3G/...
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2answers
92 views

PCIe 3.0 downgraded to 2.0 speed

I have a dual Xeon board with Intel C602 chipset and two E5-2670 CPUs. The board comes with five PCIe 3.0 x16 slots and a PCIe 3.0 x4 slot; all of which are directly connected to the CPUs. I added a ...
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2answers
1k views

How to backtrace slowness of a shared hosting web server

I have a shared hosting plan (godaddy), and time to time I suffer slowness problem. When this happens, I try to login to cpanel to double check if the problem is me or the server, and it also takes 1-...
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1answer
32 views

JMETER: Which requests to load

The question is about load testing a web application, in order to find out server capacity (I should answer the question: For how many users using my web application, the server can handle the ...
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0answers
62 views

Tcp/IP Latency on Ethernet peer to peer connection

I'm having 2 computers connected over the ethernet and communication with each other in a test setup. No for a round trip for a message to travel from computer A to B and back it takes about 12 ms for ...
0
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1answer
27 views

Why does WordPress on 3 load balanced EC2 servers run out of memory/fpm child processes and crash?

The problem: 30-40 minutes after pointing the DNS from our old server towards our new server, all available memory gets used up and our (3) load balanced EC2 instances crash. To make matters worse, ...
0
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1answer
55 views

What does iostat show a different utilization for the 'dm' device?

I installed an M.2 drive into a Proxmox host this morning and monitored the disks with iostat -x 1. Why is iostat showing dm-7 is at 98% utilization, while the M.2 LVM PV (nvme0n1p1) shows only 6.8? ...
3
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0answers
178 views

GeoIP vs IPset performance in iptables

I would like to ask you what is faster in term of performance GeoIP or IPset. Let me explain, imagine that I have rule: iptables -A INPUT -m geoip ! --src-cc US,UK,CA -j DROP And imagine that I ...
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2answers
101 views

AWS RDS with Postgres : Is OOM killer configured

We are running load test against an application that hits a Postgres database. During the test, we suddenly get an increase in error rate. After analysing the platform and application behaviour, we ...
3
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4answers
134 views

DL580 G7 giving only low performance on CPU (E7 4870)

I have a DL580 G7 with four E7 4870 and 128gb of RAM installed (eight cartridges with 2x 8gb each). The operation system is Ubuntu 18.04. There is a TITAN X on the pcie16 and the obligatory p410i ...
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0answers
35 views

Intermittent delay sending MSMQ message across network

I'm experiencing an intermittent problem when sending an MSMQ message from one server to another, where the message is sent from one service, but is not received by the consumer for up to 30 minutes. ...
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1answer
41 views

VPS high traffic load

Hello everyone I am really new on this topic so most of my questions will be trivial. I buyed a VPS from godaddy which has 4 CPUs 8GB Ram and 200 GB HDD. I set up a one domain and upload my web site ...
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1answer
112 views

Does TRUNCATE take a long time on huge tables 10gig+

I wonder if it is a good idea to use phpMyAdmin's empty feature on a table with ~12gb on a production server. I don't want to cause too much lag but need to free some disk space. This needs to be ...
0
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1answer
352 views

KVM-QEMU Windows Guest Memory Speed

How to speed up memory in Windows guest running on KVM-QEMU hypervisor? The memory speed differs between Ubuntu guest and Windows 2016 Server on the same node quite a lot. Same benchmark tool counts ...
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0answers
11 views

How can I further improve Oracle 12.1 performance on RDS m4.large instance?

I'm having performance issues with my current Oracle setup. Queries are taking half a second and I can't figure out how to speed it up further. I've upgraded my RDS instance from a t2.medium to m4....
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0answers
33 views

what causing LTO 6 to write only 1.5TB? [duplicate]

enter image description hereI have been using the IBM TS2260 3580S6E Drive from 2014. From two weeks I am getting an issue with the space in the tape media. After the format while I am copying data to ...
5
votes
1answer
168 views

Why do my SSD read latency benchmarks get markedly worse when I put an XFS filesystem on top?

I am benchmarking a small server box based on the SuperMicro E300-8D. I've installed the latest CentOS 7.5 with the latest updates, 64GB of DDR4-2100 RAM, and a Samsung 970 EVO 1TB NVMe SSD. The OS ...
6
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1answer
283 views

What does new “S3 Increased Request Rate Performance” annoucement mean

On 17 July 2018 there was an official AWS announcement explaining that there is no longer any need to randomize the first characters of every S3 object key to achieve maximum performance: https://aws....