Help! Slow Performance Post: 39610

8 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

egrep is very slow : How to improve performance

We have an egrep search in a while loop. egrep -w "$key" ${PICKUP_DIR}/new_update >> ${PICKUP_DIR}/update_record_new ${PICKUP_DIR}/new_update is 210 MB file In each iteration, the egrep on an average takes around 50-60 seconds to search. Ther'es nothing significant in the loop other...

2. Filesystems, Disks and Memory

Slow Copy(CP) performance

Hi all We have got issues with copying a 2.6 GB file from one folder to another folder. Well, this is not the first issue we are having on the box currently, i will try to explain everything we have done from the past 2 days. We got a message 2 days back saying that our Production is 98%...

3. UNIX for Dummies Questions & Answers

Slow copy/performance... between volumes

hi guys We are seeing weird issues on my Linux Suse 10, it has lotus 8.5 and 1 filesystem for OS and another for Lotus Database. the issue is when the Lotus service starts wait on top is very high about 25% percent and in general CPU usage is very high we found that when this happens if we...

4. Shell Programming and Scripting

Slow performance filtering file

Please, I need help tuning my script. It works but it's too slow. The code reads an acivity log file with 50.000 - 100.000 lines and filters error messages from it. The data in the actlog file look similar to this: 02/08/2011 00:25:01,ANR2034E QUERY MOUNT: No match found using this criteria....

5. Infrastructure Monitoring

99% performance wa, slow server.

There is a big problem with the server (VPS based on OpenVZ, CentOS 5, 3GB RAM). The problem is the following. The first 15-20 minutes after starting the server is operating normally, the load average is less than or about 1.0, but then begins to increase sharply% wa, then hovers around 95-99%....

6. Red Hat

GFS file system performance is very slow

My code Hi All, I am having redhat linux 5.3 (Tikanga) with GFS file system and its very very slow for executing ls -ls command also.Please see the below for 2minits 12 second takes. Please help me to fix the issue. $ sudo time ls -la BadFiles |wc -l 0.01user 0.26system...

7. Solaris

Solaris 11.1 Slow Network Performance

I have identical M5000 machines that are needing to transfer very large amounts of data between them. These are fully loaded machines, and I've already checked IO, memory usage, etc... I get poor network performance even when the machines are idle or copying via loopback. The 10 GB NICs are...

8. Filesystems, Disks and Memory

Slow copy (cp) performance when overwriting files

I have a lot of binary files I need to copy to a folder. The folder is already filled with files of the same name. Copying on top of the old files takes MUCH longer than if I were to delete the old files then copy the new files to the now-empty folder. This result is specific to one system -...

LEARN ABOUT CENTOS

pmdamemcache

PMDAMEMCACHE(1) 					       Performance Co-Pilot						   PMDAMEMCACHE(1)

NAME

       pmdamemcache - memcache performance metrics domain agent (PMDA)

DESCRIPTION

       This PMDA extracts performance data from memcached, a distributed memory caching daemon commonly used to improve web serving performance.
       A farm of memcached processes over multiple servers can be utilised by a single web application, increasing the total available object
       cache size, and decreasing the database load associated with smaller cache sizes.  This system is described in detail at
       http://www.danga.com/memcached.

INSTALLATION

       Configure pmdamemcache to extract the values from set of hosts used in the memcache farm.  These hosts can be listed in the
       $PCP_PMDAS_DIR/memcache/memcache.conf file, in the format (i.e.	Perl array) described at the top of pmdamemcache.pl.  A custom refresh
       rate can also be configured using this mechanism.

	       # cd $PCP_PMDAS_DIR/memcache
	       # [ edit memcache.conf ]

       Once this is setup, you can access the names and values for the memcache performance metrics by doing the following as root:

	       # cd $PCP_PMDAS_DIR/memcache
	       # ./Install

       If you want to undo the installation, do the following as root:

	       # cd $PCP_PMDAS_DIR/memcache
	       # ./Remove

       pmdamemcache is launched by pmcd(1) and should never be executed directly.  The Install and Remove scripts notify pmcd(1) when the agent is
       installed or removed.

FILES

       $PCP_PMDAS_DIR/memcache/memcache.conf
	   configuration file listing monitored memcache instances

       $PCP_PMDAS_DIR/memcache/Install
	   installation script for the pmdamemcache agent

       $PCP_PMDAS_DIR/memcache/Remove
	   undo installation script for the pmdamemcache agent

       $PCP_LOG_DIR/pmcd/memcache.log
	   default log file for error messages from pmdamemcache

SEE ALSO

       pmcd(1) and memcached(1).

3.8.10							       Performance Co-Pilot						   PMDAMEMCACHE(1)