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Full Discussion: Help in monitoring performance problem in Linux
Operating Systems Linux Help in monitoring performance problem in Linux Post 302391218 by levic on Sunday 31st of January 2010 06:04:31 AM
Old 01-31-2010
Help in monitoring performance problem in Linux
hello,

i'm having some performance problem on one of my linux machines and i hope someone will be able to help me analyzing the problem.

machine info:
Linux fedora, cpu x 4 cores of 1.6Ghz, 8G memory, 8G swap.

i've enabled sar on my machine and created a graph using ksar utility for the last week.

the sar -A command actually monitored everything on my machine.
now, i'm trying to understand what was the problemSmilie

my problem was that on 2 days at that week my application hanges and we had to restart the machine in order to solve this.
now, i'm trying to understand its its i/o problem due which related to my disk, or perhaps memory problem.

the problem occured at 15:00PM on one of the days i've monitored. i will write down the resluts:
Code:
CPU monitor: (0.0 - 30.0) 
   cpu used: 17%.
context: (0-31,000)
   cswch/s: 17,000
i/o: 
  transerf/s (0- 5000) : 3000
  block read/write (0-300,000) : 100,000
  read/write/s (0 - 4000) : 1500
memory:
  memused: 7.8G (97%)
memory misc:
   buffers: (0-700m) : 200m
   cached: (0-7.5G): 7G
swap:
   swapfree: 8G
   swapused: 40kb
 
load:
  runq-sz (0-3): 2.5
  plist-sz(0-400): 350
  load average (0-40) : 30
 
page:
  frmpg/s((-)1000 - 1000) : (-)1000
  bugpg/s: ((-)150 - 150): 50
  campg/s ((-)1000 - 1000): 1000
 
paging: 
   pgpgin/pgpgout  /s (0-80,000) : 30,000
   fault/majflt / s (0-55,000) : 1000
 
processes:
  proc/s (0-60.00): 1

i hope it was clearSmilie
i can see there is not enough memory cause he used almost all the memory, and the runq-sz is high so a lot of process running/waiting to run i think, so perhaps it might indicate the problem?

please help...Smilie

10x
Last edited by Scott; 01-31-2010 at 08:26 AM.. Reason: Please use code tags
 

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LEARN ABOUT CENTOS

grub2-file

GRUB-FILE(1)						      General Commands Manual						      GRUB-FILE(1)

NAME

       grub-file -- Check if FILE is of specified type.

SYNOPSIS

       grub-file (--is-i386-xen-pae-domu | --is-x86_64-xen-domu |
		  --is-x86-xen-dom0 | --is-x86-multiboot |
		  --is-x86-multiboot2 | --is-arm-linux | --is-arm64-linux |
		  --is-ia64-linux | --is-mips-linux | --is-mipsel-linux |
		  --is-sparc64-linux | --is-powerpc-linux | --is-x86-linux |
		  --is-x86-linux32 | --is-x86-kfreebsd | --is-i386-kfreebsd |
		  --is-x86_64-kfreebsd | --is-x86-knetbsd |
		  --is-i386-knetbsd | --is-x86_64-knetbsd | --is-i386-efi |
		  --is-x86_64-efi | --is-ia64-efi | --is-arm64-efi |
		  --is-arm-efi | --is-hibernated-hiberfil | --is-x86_64-xnu |
		  --is-i386-xnu | --is-xnu-hibr | --is-x86-bios-bootsector)
		  FILE

DESCRIPTION

       grub-file is used to check if FILE is of a specified type.

OPTIONS

       --is-i386-xen-pae-domu
	      Check if FILE can be booted as i386 PAE Xen unprivileged guest kernel

       --is-x86_64-xen-domu
	      Check if FILE can be booted as x86_64 Xen unprivileged guest kernel

       --is-x86-xen-dom0
	      Check if FILE can be used as Xen x86 privileged guest kernel

       --is-x86-multiboot
	      Check if FILE can be used as x86 multiboot kernel

       --is-x86-multiboot2
	      Check if FILE can be used as x86 multiboot2 kernel

       --is-arm-linux
	      Check if FILE is ARM Linux

       --is-arm64-linux
	      Check if FILE is ARM64 Linux

       --is-ia64-linux
	      Check if FILE is IA64 Linux

       --is-mips-linux
	      Check if FILE is MIPS Linux

       --is-mipsel-linux
	      Check if FILE is MIPSEL Linux

       --is-sparc64-linux
	      Check if FILE is SPARC64 Linux

       --is-powerpc-linux
	      Check if FILE is POWERPC Linux

       --is-x86-linux
	      Check if FILE is x86 Linux

       --is-x86-linux32
	      Check if FILE is x86 Linux supporting 32-bit protocol

       --is-x86-kfreebsd
	      Check if FILE is x86 kFreeBSD

       --is-i386-kfreebsd
	      Check if FILE is i386 kFreeBSD

       --is-x86_64-kfreebsd
	      Check if FILE is x86_64 kFreeBSD

       --is-x86-knetbsd
	      Check if FILE is x86 kNetBSD

       --is-i386-knetbsd
	      Check if FILE is i386 kNetBSD

       --is-x86_64-knetbsd
	      Check if FILE is x86_64 kNetBSD

       --is-i386-efi
	      Check if FILE is i386 EFI file

       --is-x86_64-efi
	      Check if FILE is x86_64 EFI file

       --is-ia64-efi
	      Check if FILE is IA64 EFI file

       --is-arm64-efi
	      Check if FILE is ARM64 EFI file

       --is-arm-efi
	      Check if FILE is ARM EFI file

       --is-hibernated-hiberfil
	      Check if FILE is hiberfil.sys in hibernated state

       --is-x86_64-xnu
	      Check if FILE is x86_64 XNU (Mac OS X kernel)

       --is-i386-xnu
	      Check if FILE is i386 XNU (Mac OS X kernel)

       --is-xnu-hibr
	      Check if FILE is XNU (Mac OS X kernel) hibernated image

       --is-x86-bios-bootsector
	      Check if FILE is BIOS bootsector

SEE ALSO

       info grub

								  Web Feb 26 2014						      GRUB-FILE(1)
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