How are the disks attached ? a NAS, a SAN? what type?
But usually this sort of issues comes more from the OS side... Or SAN is flushing and syncing its cache but badly configured, not optimised to your usage (dont laugh I have seen cases with the best equipment...)
we have an unix system which has
load average normally about 20.
but while i am running a particular unix batch which performs heavy
operations on filesystem and database average load
reduces to 15.
how can we explain this situation?
while running that batch idle cpu time is about %60-65... (0 Replies)
Hello all, I have a question about load averages.
I've read the man pages for the uptime and w command for two or three different flavors of Unix (Red Hat, Tru64, Solaris). All of them agree that in the output of the 2 aforementioned commands, you are given the load average for the box, but... (3 Replies)
Hello, Here is the output of top command. My understanding here is,
the load average 0.03 in last 1 min, 0.02 is in last 5 min, 0.00 is in last 15 min.
By seeing this load average, When can we say that, the system load averge is too high?
When can we say that, load average is medium/low??... (8 Replies)
Hi,
i have installed solaris 10 on t-5120 sparc enterprise.
I am little surprised to see load average of 2 or around on this OS.
when checked with ps command following process is using highest CPU. looks like it is running for long time and does not want to stop, but I do not know... (5 Replies)
Hello AlL,..
I want from experts to help me as my load average is increased and i dont know where is the problem !!
this is my top result :
root@a4s # top
top - 11:30:38 up 40 min, 1 user, load average: 3.06, 2.49, 4.66
Mem: 8168788k total, 2889596k used, 5279192k free, 47792k... (3 Replies)
Hi ,
I am using 48 CPU sunOS server at my work.
The application has facility to check the current load average before starting a new process to control the load.
Right now it is configured as 48. So it does mean that each CPU can take maximum one proces and no processe is waiting.
... (2 Replies)
Hi,
I am getting a high load average, around 7, once an hour. It last for about 4 minutes and makes things fairly unusable for this time.
How do I find out what is using this. Looking at top the only thing running at the time is md5sum.
I have looked at the crontab and there is nothing... (10 Replies)
Here we go....
Preface:
..... so in a galaxy far, far, far away from commercial, data sharing corporations.....
For this project, I used the ESP-WROOM-32 as an MQTT (publish / subscribe) client which receives Linux server "load averages" as messages published as MQTT pub/sub messages.... (6 Replies)
Discussion started by: Neo
6 Replies
LEARN ABOUT DEBIAN
asr
ASR(4) BSD Kernel Interfaces Manual ASR(4)NAME
asr -- driver for Adaptec I2O based SCSI/ATA host bus adapters
SYNOPSIS
device asr
DESCRIPTION
The Adaptec asr driver provides access to disks and disk arrays controlled by I2O based host bus adapters and SmartRAID SCSI RAID adapters
through the standard SCSI disk da(4) interface.
The supported adapters provide 64 bit PCI, Compact PCI, Zero Channel PCI, and up to four channels of Ultra2, Ultra 160, or Ultra320 SCSI, or
two channels of 1GB Fibre. All support RAID-0, RAID-1, RAID-10, RAID-5 and RAID-50 arrays. All SCSI target types are supported. For the
ATA based controllers, one IDE drive per channel is supported. Hot-swapping of IDE drives is not supported at this time.
All host bus adapters must be configured before they can be used with any operating system. Please contact Adaptec directly to obtain the
latest information on configuration utilities for the adapters. Currently there are both a Motif based GUI configuration utility and a CLI
based configuration utility available from the Adaptec Web site. The cards and arrays can also be configured via the BIOS based configura-
tion tool (SMOR).
HARDWARE
The adapters currently supported by the asr driver include the following:
o Adaptec Zero-Channel SCSI RAID 2000S, 2005S, 2010S, 2015S
o Adaptec SCSI RAID 2100S, 2110S
o Adaptec ATA-100 RAID 2400A
o Adaptec SCSI RAID 3200S, 3210S
o Adaptec SCSI RAID 3400S, 3410S
o Adaptec SmartRAID PM1554
o Adaptec SmartRAID PM1564
o Adaptec SmartRAID PM2554
o Adaptec SmartRAID PM2564
o Adaptec SmartRAID PM2664
o Adaptec SmartRAID PM2754
o Adaptec SmartRAID PM2865
o Adaptec SmartRAID PM3754
o Adaptec SmartRAID PM3755U2B / SmartRAID V Millennium
o Adaptec SmartRAID PM3757
o DEC KZPCC-AC (LVD 1-ch, 4MB or 16MB cache), DEC KZPCC-CE (LVD 3-ch, 64MB cache), DEC KZPCC-XC (LVD 1-ch, 16MB cache), DEC KZPCC-XE (LVD
3-ch, 64MB cache) -- rebadged SmartRAID V Millennium
FILES
/dev/asr* Adaptec SCSI RAID control nodes
NOTES
The ATA based controllers present their devices as SCSI-like devices via CAM. For IDE drives attached to these cards, a subset of standard
SCSI commands and mode pages are understood via translation performed in the card's firmware.
SEE ALSO da(4)HISTORY
The asr (Adaptec SCSI RAID) driver first appeared as the dpti2o driver under BSDi BSD/OS 3.2, then under FreeBSD 2.2.8 and was ported over to
the CAM layer represented in 4.0.
AUTHORS
The asr driver was kindly donated by Adaptec and is maintained by Mark Salyzyn <mark_salyzyn@adaptec.com>. This manual page was written by
Mark Salyzyn and fixed up by Jeroen Ruigrok van der Werven <asmodai@FreeBSD.org>.
BSD July 14, 2004 BSD