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Operating Systems Linux Help in monitoring performance problem in Linux Post 302394946 by TonyFullerMalv on Saturday 13th of February 2010 04:24:20 PM
Old 02-13-2010
To be fair RAID 5 is going to be better than a single disc or jut a mirrored pair of discs.
Performance tuning is not an exact art, the figures can look terrible but if the machine is performing the task you want it to do okay then they are not a problem, if the machine is performing the required task then you start looking at the figures to see where the bottle neck is, once you deal with it another bottle neck may also need dealing with.
Suggestions:
Copy the contents of your current disks onto another set of discs in a stripe then reconstruct your RAID 5 set of discs into a stripe and mirror them against the first stripe?
Copy your current RAID 5 configuration onto 10K RPM discs?
Ensure you are using the fastest interface possible for your platform, i.e. SCSI or SATA tend to be faster than IDE?

Last edited by TonyFullerMalv; 02-13-2010 at 05:30 PM..
 

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GRUB-FILE(1)                                                       User Commands                                                      GRUB-FILE(1)

NAME
grub-file - check file type SYNOPSIS
file OPTIONS FILE DESCRIPTION
Check if FILE is of specified type. --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 -h, --help Display this help and exit. -u, --usage Display the usage of this command and exit. SEE ALSO
The full documentation for grub-file is maintained as a Texinfo manual. If the info and grub-file programs are properly installed at your site, the command info grub-file should give you access to the complete manual. grub-file (GRUB) 2.02-2ubuntu8.3 July 2018 GRUB-FILE(1)
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