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Nov
5
comment How to find what is using linux swap or what is in the swap?
Like you say you should just set vm.swappiness = 0 (or 1) and swapoff && swapon
Oct
29
comment Extremely high mysqld CPU usage with no active queries
Try running this: "mysqladmin -u root -p -i 1 processlist". That might show you short-lived connections that you're otherwise not seeing with a manual SHOW PROCESSLIST
Oct
28
comment Extremely high mysqld CPU usage with no active queries
strace the mysqld process to get clues as to what it's doing.
Oct
1
comment Red Hat Software Collections 1 Beta channel has 0 packages?
Why the down vote? If you can explain why two months later there are no packages in that channel I'll gladly accept your answer.
Sep
9
comment Do I need a RHEL subscription to install packages?
You can install RPMs manually which is madness. Just use CentOS and stop listening to that administrator.
Sep
5
comment Securing Magento against high-traffic situations
@ceejayoz, 1-2 seconds is okay. Depends on what your application is doing and what browser the client is using.
Aug
16
comment Tomcat 7.0.42 crashes many times a day
"a memory warning that there is not enough Heap Space" Increase the Heap?
Aug
14
comment MySQL settings for MAXIMUM performance / can be specific to particular DB or user?
-1 because you didn't even say what storage engine your using.
Aug
13
comment How can you map server dependencies in an undocumented environment?
I've got to admit this is the first thing I thought of too... Definitely not a best practice but probably the most expedient option.
Aug
12
comment We have Solaris 10 VM in KVM (ProxmoxVE) how to check if Solaris is using all cores?
What are the values of sockets and cores in /etc/qemu-server/NNN.conf (where NNN is the number of your Solaris VM)? How many cores have you allocated to the VM?
Aug
8
comment Memory is being hogged which results in some webpages not opening
For the memory "problem": just get more memory!
Aug
8
comment Memory is being hogged which results in some webpages not opening
Do a mysqladmin --verbose processlist and examine the queries.
Jul
31
comment Too many TCP connections causes disconnections
How many network cards does this server have and what are the settings for each (i.e. ethtool ethX)
Jul
30
comment sudden high CPU, causing server to be unresponsive
Do you have any cron jobs running at that time?
Jul
29
comment File I/O Throughput
I suspect that write barriers are being sent where the performance is poor.
Jul
29
comment File I/O Throughput
Please list the filesystem (e.g. ext3 or ext4) for each along with the options (e.g. noatime) to make sure you are comparing apples to apples.
Jul
23
comment What's the optimal server configuration for fastest inserting in a MySql database in this scenario?
Is this a data warehousing use case?
Jul
22
comment Server Hardware/Settings for high traffic
Load test your app in a test environment. No one is going to be able to answer you. Please see: serverfault.com/questions/350454/…
Jul
17
comment NFS directory not working
Does mounting as (vfstype) nfs4 make a difference?
Jul
1
comment MySQL is running VERY slow on CentOS 6x (not 5x)
barrier=0 instead of defaults