Software :: Monitoring Tools Which Can Listen Disks / Overhead / Cache / Memory / CPU Performance
Jul 13, 2011I'm searching monitoring tools which can listen disks, overhead, cache, memory, cpu performance.Can anybody help me?
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Server :: Clear Cache Memory ( RHEL 5.1 ) As It Consumes Almost 100% Physical Memory?
Jan 11, 2010let me know how to clear cache memory ( RHEL 5.1 ) as it consumes almost 100% physical memory.
View 3 Replies View RelatedProgramming :: SHM Memory Counted As Cache Memory With Kernel 2.6.18?
Aug 25, 2010Is that possible that SHM shared memory is counted as cache memory on Linux with kernel 2.6.18?If find it really odd since this memory is not file backed, but I have a piece of code that loads data using shm_open+mmap, and it generates an amount of cache memory in /proc/meminfo that corresponds exactly to the amount of shared memory (I load that data from a file but I am using posix_fadvise(fd,0,0,POSIX_FADV_DONTNEED) to ensure this file is not cached and I made sure that it is working as expected). As far as I know SHM memory was not tagged as cache memory with kernel 2.6.9.If it is the case it is really unfortunate since normally cache memory can be considered to be part of the "available" memory since it can be flushed promptly but this is clearly not the case with SHM memory... Is there an easy way to get the total amount of used SHM memory on a system?
View 4 Replies View RelatedNetworking :: Isp Bandwidth Monitoring Tools
May 11, 2010dear can someone highly gui or text base/command line tool that use as "isp bandwidth monitoring tools in linux".i do have leased line,frame relay, wireless linke,dsl too. i want to monitor what is uploading and downloading.
View 11 Replies View RelatedGeneral :: System Monitoring Tools
Apr 11, 2011I just need to ask about any existing tool in linux which can show us the CPU memory and swap utilizations of overall system for particular time duration and generate graphs.?i m a student of computer science and want this information of resource utilization for my project..kindly reply if any of u liux fans knows about such tools.
View 3 Replies View RelatedCentOS 5 :: Looking For Apache Performance Monitoring?
May 19, 2011In Short: I want something that will show me which files and associated requested URLs are causing the highest load on our web server.
Verbose: We already monitor our Apache web server using Cacti, Nagios, and of course traditional nix commands, but I am looking for something specifically to take an Apache process ID and tie that to a users request for a specific file and URL. The great thing about something like this is that it would be able to show me the worse performing PHP files. Special bonus if it can store this data over time for reports.
I have been googling around for something like this but can't seem to find it. Bonus if it exists in Cacti or Nagios already and I'm just to blind. I started writing my own PERL script to do this, but have limited time to devote to this at work so if a solution already exists I'm game, else I'll just have to write it myself. I'm also worried about my own scripted solution in that it won't get it write because it will be leveraging the output of a specialzed apache log that records the PID and then doing a look up with ps aux looking for that PID.
Red Hat / Fedora :: Best Network Monitoring Tools Which Are Desciptive
Aug 28, 2010Please suggest few best linux networking tools which are desciptive. That is to monitor local network PC whether its linux or windows pc.
View 2 Replies View RelatedServer :: Monitoring Tools For Linux Servers
May 19, 2010I am looking for some monitoring tools (such as disk usage,memory usage, cpu,etc) for my linux machines. I came across two tools, cacti and splunk.Which one is better ? It will be nice if you can also let me know the reason.
View 8 Replies View RelatedSoftware :: System Activity Monitoring Tools
Feb 8, 2010System activity monitoring tools - top, iotop, ntop, sar, collectl, etc - may be a good reference to judge the system activity when the system transitions to sleep state.But if I make the system transition to sleep state when i/o activity is zero during 15 minutes, for example, it won't sleep forever because slight i/o by daemons, etc occurs continuously even if no user i/o.So how can I judge the system activity to change the state by using those tools?
View 4 Replies View RelatedGeneral :: Video Card Performance Monitoring?
Jan 19, 2010Is there a 'top' like command for monitoring the GPU and memory usage of a video card? I am most interested in Linux commands, but and OS would be interesting. I strongly suspect that for a group of my systems the video cards are being under-utilized (but I have no idea by how much) and would like to re-allocate funds to other bottle-necks. We are using higher end cards, so the price difference between cards is significant.
View 1 Replies View RelatedNetworking :: Monitoring Application Performance Over Networks?
Dec 10, 2010I have been ask to provide a network monitoring utility that can create network benchmarks for applications to graphically see how it performs.
View 6 Replies View RelatedSoftware :: Performance Monitoring Tool / Where To Download It?
Mar 4, 2010I'm interested in a Open Source performance monitoring tool that can work across the board on all Linux platforms. If such a product does not exist that works on all the platforms, Redhat would be the platform I am most interested in. Can I get some suggestions and locations on where to down load?
View 3 Replies View RelatedFedora Security :: Recommended Network Monitoring Tools?
Feb 9, 2011I am currently running a 64-bit Fedora 14 server which hosts a game server, a voice server, and remote desktop functionality, each on a distinct TCP port. I am currently using the built-in firewall to deny all traffic other than ICMP ping/pong and TCP traffic on those specific ports.I am looking for a graphical application which will let me monitor any connections being made to my server in order to keep an eye out for possible security concerns. To be more specific, I'd like to be able to see the source IP addresses, TCP/UDP ports, and individual bandwidth in use by external connections being made to the server, along with any other information that might be helpful in identifying a possible intrusion attempt.
View 3 Replies View RelatedSecurity :: Monitoring Tools For Squid Proxy Server
Feb 9, 2010is someone can guide the best open source tools to monitor as webbase,gui,shell prompt
View 1 Replies View RelatedServer :: Tools For Monitoring Disk Io & Io Wait Times
Mar 29, 2010I have a scenario where I want to monitor at disk performance (cpu and memory also if possible) on a RHEL 5 server functioning as a NAS. I have several machines that backup content to this server via scheduled cronjobs and I'm curious to see if the machine is hitting a bottleneck under load.I attempted to setup cacti on one of our LAMP servers and had a miserable time due to running PHP 5.3 and deprecated function issues.Can anyone recommend an alternative keeping in mind I have only very basic experience with SNMP?
View 1 Replies View RelatedRed Hat / Fedora :: Resource/Performance Monitoring Script - Red Hat Enterprise Lin?
Mar 18, 2011Linux OS Version/Release: Red Hat Enterprise Linux Server release 5.5 (Tikanga) Linux <hostname> 2.6.18-194.8.1.el5 #1 SMP Wed Jun 23 10:52:51 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux I have a server that hosts 30+ Oracle databases. Each database has its own set of scripts that shuts down the database and start the database. Things has been working "smoothly" in the last couple of months until this week.
My log in most cases shows errors like the ones below:cannot fork [Resource temporarily unavailable] Connection reset by peer I am 100% sure that the scripts are not at fault since it has been working with no errors for months. I want to monitor the server for what resource or configurations I have to tweak to get around this problem if possible, am I exceeding my ulimit settings running out of process,out of memory/swap space etc?
I wish I could stay up 24x7 to monitor to monitor the server but I can't. Can anyone please advise if there is any monitoring script available somewhere that I can put in cron to temporarily monitor the server for resource issues, for example memory used/left, swap space used/left, ulimit-num-process used/left, nofiles used/left etc.
Ubuntu Servers :: Performance Monitoring Tool For Trend Analysis?
Feb 9, 2010It is vital to get a useful server performance monitoring tool that prevents growth related performance issues. Moreover, it should offer long term capacity planning and trend analysis along with detecting performance issues and unwanted outages.
View 3 Replies View RelatedNetworking :: Tools For Monitoring Network Bandwidth Usage Of Program/port?
Dec 8, 2010I have a third party program (tightvnc) which I want to monitor and detect if it loses a connection with a client. I don't care if the client has the program open but isn't doing anything with it, I only want to know if the actual TCP connection is lost.
Since TCP takes forever to die on it's own I was thinking the best way to detect if a connection is lost is by bandwidth the bandwidth on the tcp port allocated to the VNC connection. Are there any tools built in to redhat (RHEL 5.2) which I could use to do this? Since I don't have full control of the operating system I would prefer to use built in tools rather then trying to get a new tool installed.
General :: Performance - Best Available Technology For Layered Disk Cache
Oct 17, 2010I've just bought a 6-core Phenom with 16G of RAM. I use it primarily for compiling and video encoding (and occassional web/db). I'm finding all activities get disk-bound and I just can't keep all 6 cores fed. I'm buying an SSD raid to sit between the HDD and tmpfs. I want to setup a "layered" filesystem where reads are cached on tmpfs but writes safely go through to the SSD. I want files (or blocks) that haven't been read lately on the SSD to then be written back to a HDD using a compressed FS or block layer.
So basically reads:
- Check tmpfs
- Check SSD
- Check HD
And writes: - Straight to SSD (for safety), then tmpfs (for speed) And periodically, or when space gets low: - Move least frequently accessed files down one layer. I've seen a few projects of interest. CacheFS, cachefsd, bcache seem pretty close but I'm having trouble determining which are practical. bcache seems a little risky (early adoption), cachefs seems tied to specific network filesystems. There are "union" projects unionfs and aufs that let you mount filesystems over each other (USB device over a DVD usually) but both are distributed as a patch and I get the impression this sort of "transparent" mounting was going to become a kernel feature rather than a FS.
I know the kernel has a built-in disk cache but it doesn't seem to work well with compiling. I see a 20x speed improvement when I move my source files to tmpfs. I think it's because the standard buffers are dedicated to a specific process and compiling creates and destroys thousands of processes during a build (just guessing there). It looks like I really want those files precached.....
Ubuntu Servers :: Setting Up A Cache Improve The Performance?
Feb 26, 2010dns cache serThis is probably more of a network question but I figured some one who is a network expert might know. Currently my organization has DNS servers. But my questions is would setting up a cache server improve the performance any? When I first thought about it i thought probably not. But since it stores information in ram that made me think maybe it would improve network performance a little.
View 3 Replies View RelatedSoftware :: Mplayer Cache Option Reduces Performance
Mar 11, 2010I needed a larger cache because I have some videos stored on another samba server and it's laggy. I set options: cache=20000, cache-min=10 , and that helped to play those videos smoothly, but that caused all 1280x720 mp4 files stored on my local drive to lag and A/V desync with mplayer message: **** Your system is too SLOW to play this! ****
I tried cache values from 1000 to 80000, and they lag in any case. But without the option "cache" these videos play well. Now I commented "cache" in config.
Code:
[default]
#cache=65536
#cache-min=10
ao=alsa
[Code].....
Ubuntu :: Network Performance Testing Tools
Mar 3, 2009I would like to test network performance, to get statistic information. Is there any tools where I could specify partikular message size send as a constant for many times and in an output I could get time for each transaction? There is a tool called ApacheBench, it is for webserver testing, but I would like to find something similar for network testing. I have also tried Netpipe, Netperf, Iperf, but they do not show information in an output, which I would like to see.
View 2 Replies View RelatedProgramming :: Tools Used For Testing Performance Of C And C++ Programs
Nov 17, 2008I would like to know the Tools which are used for Testing the performance of C and C++ programs under linux?
View 4 Replies View RelatedGeneral :: Open Source Performance Analysis Tools?
Mar 21, 2011recommend some really good performance analysis tools? Top is not good because it has problems.I am looking for some products like collectD, collectl, or something else comparable.I need something that will look at tasks, cpu, memory, disk usage, interrupts, priorities.If I am missing a tool listed then let me know.I am looking for something that can display the results graphically.
View 3 Replies View RelatedCentOS 5 Hardware :: Poor I/O Performance On IDE/SATA Disks?
Jan 13, 2010I've just removed fedora 10 and installed CentOS 5.4 both x86_56 on my Lenovo ThinkCentre 9091-CTO workstation, and observed serious performance degradation while intensive I/O operations and huge load without significant CPU consumption in user mode with about 50% in I/o wait.For example if I do the "tar xjvf some_large_tar.bz" file and run vmstat i get the output below. This is the only cpu and io intensive process running. The load gets up to 6 on C2D CPU and the machine has unacceptable responsivness.
[root@f00 ~]# vmstat 5 10
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
[code]....
General :: Monitoring A Box - Memory Usage ?
Jul 15, 2010I wanted to know the best way to monitor memory usage, us space and processes and receive an email if a problem occurs?
View 2 Replies View RelatedUbuntu :: How To Clean The Cache Memory
Jan 24, 2010I read somewhere that i can clean cache memory with this comand:
Code:
david@lap:~$ sudo echo 3 > /proc/sys/vm/drop_caches
bash: /proc/sys/vm/drop_caches: Permission denied
The problem is that permission is denied as you see...
Ubuntu :: Tools To Get Memory Map
Jun 23, 2010how to find the memory map of any process? I used the pmap on unix. But my requirement is to check how much memory has been allocated from any library files.
For example suppose i have one a.exe and it load one abc.so file which alloacate some memory. so can there be any utility to trace which memory is invoked by which .so file.
Debian :: High Memory Usage In Cache?
Mar 12, 2011I've installed my debian sid about one month ago (first xfce, next gnome) but noticed that it's kind of really slow. The upgrades take ages, launching (and using) firefox takes so much time,... In comparaison to my ubuntu, archlinux (on the same computer) or previous installation of debian there is clearly a problem somewhere.Today I tried to do a "top" sorted by mem usage : 3.5% xulrunner-stub, 2.1% dropbox, 1.4% aptitude (doing upgrade), 1.4% clementine,... nothing terriblebut still I've 2.7Gb or RAM used (more than 50%)
$ free -m
total used free shared buffers cached
Mem: 3967 26851282 0 79 1938
[code]....
Ubuntu :: How To Clear The System Cache Memory
Feb 15, 2011Ubuntu 10.10
How do I clear the System cache memory.
For the past few days , I am facing problem in opening websites (firefox & Chrome).
I have to restart the laptop and then access the web sites.