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2
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1answer
429 views

MongoDB 100% locked periodically. MMS charts attached

Trying to diagnose what could be causing intermittent lock-up on MongoDB server running behind a Rails application. Hoping that someone might recognise the pattern of peaks and troughs in the charts ...
1
vote
1answer
376 views

How can I tell if I would benefit from upgrading my Amazon RDS instance?

I have several sites with very high traffic - all hosted on Heroku and all of which access a db.m1.large mySQL Amazon RDS instance - and would like to know if there would be a performance benefit in ...
0
votes
1answer
151 views

MySQL slow connection

I am running a laravel application that is on a separate server than my MySQL database. If I run the query on the Mysql server it takes the expected 0.00 - 0.01 seconds to return. However when I log ...
0
votes
1answer
72 views

Database server's Load reaches very high values while nothing seems to use CPU, what could be the reason?

top - 16:33:08 up 155 days, 6:05, 5 users, load average: 27.93, 35.31, 31.34 At this moment it only shows 27.0 but the behavior is like so: While mysqld uses 0% cpu the load raises to high values ...
0
votes
1answer
122 views

Server Performance

I know very little about performance tuning of servers etc... so i thought i'd put this up here as i start some research on it, just to get some direction. I am in the process of migrating from my ...
0
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1answer
71 views

SQL 2008 Performance Reports

Does anybody know of DMV's or reports that will show the historical performance of the stored procedures on the server? Also if that data is stored in a table or tables, what is the retention period ...
0
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1answer
156 views

Need help tuning Mysql and linux server

We have multi-user application (like MailChimp,Constant Contact) . Each of our customers has it's own contact's list (from 5 to 100.000 contacts). Everything is stored in one BIG database (currently ...
-1
votes
1answer
743 views

MySQL runs at >=100% CPU, heavy disk I/O?

Recently my Debian Linux server has been experiencing slow web server response times. I've investigated and it seems that MySQL is the culprit, yet there are no slow queries indicated by the slow ...
2
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0answers
206 views

Exchange 2010 on KVM - CPU usage reporting incorrectly

Good Morning, I have virtualized an exchange server using KVM (proxmox actually). It is Exchange 2010 SP3 running on server 2012 R2. KVM version 1.7.1. I am using the latest (0.1-74) virtio ...
1
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0answers
28 views

Persist statistics data from Postgres' stats_temp_directory on demand

We are investigating I/O load in one of our VMs and possibilities to optimize it and it showed that most of the load is generated by the stats collector of PostgreSQL. It jumps between 3,5 and 6,5 ...
1
vote
0answers
39 views

Sybase heavy Disk I/O issue

I have a Sybase 15 server that is constantly reading from the hard disk. I noticed that the sqlsrvr.exe is the culprit which is the main database engine. This is a pretty utilized server that is ...
1
vote
0answers
81 views

Performance Monitor Processor Time counter blank data

I setup a simple data collector with Performance Monitor to collect Processor time(CPU Usage in %) and SQL Statistics: Batch Requests/sec @ 15 second intervals to see if i can get some baselines and ...
1
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0answers
783 views

MongoDB Performance Troubleshooting

I have a small MongoDB replica set (2.4.6) and it seems about once a week, the primary gets bogged and the load average spikes up. This app doesn't see a huge amount of traffic. It resides in EC2 ...
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0answers
578 views

SQL 2008 Database tuning advisor won’t start

For some reason I can't get DTA to connect to my development machine. It connects to a remote DB just fine but when I point it to my dev machine I get an error saying: Failed to initialize MSDB ...
0
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0answers
21 views

WordPress site with no traffic; MySQL reporting 300-500 queries per second, frequently crashing

My server is running Debian 7.10 (Apache 2.2.22, MySQL 5.5.47, PHP5). It's a VPS. I've tried to summarise the issue in the title. I'm running a very small, private WordPress blog which is only ...
0
votes
0answers
8 views

How to show delta of a counter metric in PCP between time A and B?

For simple metric like disk.all.read it is enough to do something like this: $ pmval -a ... -S 11:50 -s 2 -t10m -r disk.all.read metric: disk.all.read ... start: Tue Feb 23 11:50:00 2016 end: ...
0
votes
0answers
32 views

MariaDB query cache not being used with prepared statements

We are seeing a problem with our MariaDB setup where our queries executed as prepared statements are not being cached, however, queries executed locally through mysql command (i.e. text protocol) do ...
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0answers
47 views

Web and Business Azure Tiers sunset (Deprecation)

The problem I am struggling to understand which is the best option to move to from this as their is no direct replacement. What would be the best step forward? I have flagged that optimization needs ...
0
votes
0answers
144 views

Disk IO slower when outstanding IO requests are less than 32

I moved the databases from one server to another and general remark from users is that its slower. The old server was on windows 2003,64 bit, SQL 2005 Ent edition(32 bit) whereas new one is Windows ...