03-04-2005
iostat -E and -e seems to be more applicable to olden days of pure HDDs.
With SAN and RAID , I dun think it's relevant anymore.
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi all,
i have run iostat -em, and get below result. Can i know what is this output meaning, and how to fix that problem.
iostat -em
---- errors ---
device s/w h/w trn tot
sd7 0 1 0 1
sd8 1 1 0 2
sd9 0 1 0 1
sd10 0 ... (2 Replies)
Discussion started by: foongkt5220
2 Replies
2. AIX
Can someone tell me what the output of 'who -d' is ?
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What can be done to get rid of / fix those process ?
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I am asking because while looking for another 'who' option, I... (2 Replies)
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3. Shell Programming and Scripting
So I use Cacti for monitoring IO statistics on my servers, now originally I couldnt monitor Multipath deviced servers as they have alot of /dev/sdxx and /dev/emcpowerxx, I have devised a method of trimming them down to just the actual devices but the issue is the output looks like so.
# iostat... (0 Replies)
Discussion started by: RiSk
0 Replies
4. Shell Programming and Scripting
Friends,
.
On linux i have to run iostat command and in each iteration have to print the greatest value in each column.
e.g
iostat -dt -kx 2 2 | awk ' !/sd/ &&!/%util/ && !/Time/ && !/Linux/ {print $12}'
4.38
0.00
0.00
0.00
What i would like to print is only the... (3 Replies)
Discussion started by: achak01
3 Replies
5. Shell Programming and Scripting
Friends,
Need some help.
On linux i have to run iostat command and in each iteration have to print the greatest value in each column.
e.g
iostat -dt -kx 2 2 | awk ' !/sd/ &&!/%util/ && !/Time/ && !/Linux/ {print $12}'
4.38
0.00
0.00
0.00
WHhat i would like to... (15 Replies)
Discussion started by: achak01
15 Replies
6. Filesystems, Disks and Memory
Hi Guys,
I've been having some arguments with my colleagues about one thing. Always my thought was that as as far as disk performance is concern by looking at the output of the iostat command (AIX) you would be able to identify if you have a hot disk and then by moving some files out that disk... (3 Replies)
Discussion started by: arizah
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7. Solaris
My scheduled collection of statistics is giving very large output because of an high number of ssd device not associated to any disk
The iostat -x command is collecting statistics from them and the output is very large.
I.g.
if a run
iostat -x|tail +3|awk '{print $1}'>f0.txt.$$
iostat... (5 Replies)
Discussion started by: sun-mik
5 Replies
8. Solaris
Noticed that asvc_t values in iostat command outputs are mostly more than 100 in our previous iostat analysis.
Also found the following detail from an alternate site IO Bottleneck - Disk performance issue - UnixArena
----
1. asvc_t average service time of active transactions, in... (2 Replies)
Discussion started by: saraperu
2 Replies
9. Shell Programming and Scripting
Hi,
I got the code below is one of the threads from this forum.
lineCount=$(iostat | wc -l)
numDevices=$(expr $lineCount - 7);
iostat $interval -x -t |
awk -v awkCpuFile=$cpuFile -v awkDeviceFile=$deviceFile -v awkNumDevices=$numDevices '
BEGIN {
print... (2 Replies)
Discussion started by: gopivallabha
2 Replies
LEARN ABOUT NETBSD
arcmsr
ARCMSR(4) BSD Kernel Interfaces Manual ARCMSR(4)
NAME
arcmsr -- Areca Technology Corporation SATA/SAS RAID controller
SYNOPSIS
arcmsr* at pci? dev ? function ?
DESCRIPTION
The arcmsr driver provides support for the PCI-X and PCI Express RAID controllers from Areca Technology Corporation:
- ARC-1110 PCI-X 4 Port SATA RAID Controller
- ARC-1110ML PCI-X 4 Port SATA RAID Controller
- ARC-1120 PCI-X 8 Port SATA RAID Controller
- ARC-1120ML PCI-X 8 Port SATA RAID Controller
- ARC-1130 PCI-X 12 Port SATA RAID Controller
- ARC-1130ML PCI-X 12 Port SATA RAID Controller
- ARC-1160 PCI-X 16 Port SATA RAID Controller
- ARC-1160ML PCI-X 16 Port SATA RAID Controller
- ARC-1170 PCI-X 24 Port SATA RAID Controller
- ARC-1200 Rev A PCI Express 2 Port SATA RAID Controller
- ARC-1202 PCI Express 2 Port SATA RAID Controller
- ARC-1210 PCI Express 4 Port SATA RAID Controller
- ARC-1220 PCI Express 8 Port SATA RAID Controller
- ARC-1230 PCI Express 12 Port SATA RAID Controller
- ARC-1230ML PCI Express 12 Port SATA RAID Controller
- ARC-1231ML PCI Express 12 Port SATA RAID Controller
- ARC-1260 PCI Express 16 Port SATA RAID Controller
- ARC-1260ML PCI Express 16 Port SATA RAID Controller
- ARC-1261ML PCI Express 16 Port SATA RAID Controller
- ARC-1280 PCI Express 24 Port SATA RAID Controller
- ARC-1280ML PCI Express 24 Port SATA RAID Controller
- ARC-1680 PCI Express 8 Port SAS RAID Controller
- ARC-1680LP PCI Express 8 Port SAS RAID Controller
- ARC-1680i PCI Express 8 Port SAS RAID Controller
- ARC-1680x PCI Express 8 Port SAS RAID Controller
- ARC-1681 PCI-X 8 Port SAS RAID Controller
These controllers support RAID levels 0, 1, 1E, 3, 5, 6, and JBOD using either SAS or SATA II drives.
arcmsr supports management and monitoring of the controller through the bioctl(8) and envstat(8) commands.
Please note, however, that to use some features that require special privileges, such as creating/removing hot-spares, pass-through disks or
RAID volumes will require to have the password disabled in the firmware; otherwise a Permission denied error will be reported by bioctl(8).
When a RAID 1 or 1+0 volume is created, either through the bioctl(8) command or controller's firmware, the volume won't be accessible until
the initialization is done. A way to get access to the sd(4) device that corresponds to that volume without rebooting, is to issue the fol-
lowing command (once the initialization is finished):
$ scsictl scsibus0 scan any any
The arcmsr driver will also report to the kernel log buffer any error that might appear when handling firmware commands, such as used by the
bioctl(8) command.
EVENTS
The arcmsr driver is able to send events to powerd(8) if a volume or any drive connected to the volume is not online. The state-changed
event will be sent to the /etc/powerd/scripts/sensor_drive script when such condition happens.
SEE ALSO
intro(4), pci(4), scsi(4), sd(4), bioctl(8), envstat(8), powerd(8), scsictl(8)
HISTORY
The arcmsr driver first appeared in NetBSD 5.0.
AUTHORS
The arcmsr driver was originally written for OpenBSD by David Gwynne. It was ported to NetBSD and extended by Juan Romero Pardines.
BSD
March 3, 2008 BSD