06-15-2005
I am not quite sure whether we are on the right track, without further metrix posted. Even a default ext3 config is not likely to be the bottleneck of this wait i/o issue. What about RAID strip unit size? What about NFS options (noac, cache, rsize, wsize, etc)? Especially noac. I am quoting related section from nfs man page:
----------------------------------------------------------------------
noac Disable all forms of attribute caching entirely. This
extracts a server performance penalty but it allows two
different NFS clients to get reasonable good results
when both clients are actively writing to common
filesystem on the server.
-------------------------------------------------------------------------
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I reinstalled my Linux box with RedHat 7.2 and used the ext3 journaling file system. This thing is a pig now. There isn't much running on the box, and performance is sad. (1 Reply)
Discussion started by: 98_1LE
1 Replies
2. UNIX for Dummies Questions & Answers
can someone tell me a good site to go to in order to learn this. please do not recommen nay books because i dont have interest in that. if you know of any good sites with good straight forward explanation on how to split loads on machines that has excessive loading, please let me know
Also,... (1 Reply)
Discussion started by: TRUEST
1 Replies
3. UNIX for Dummies Questions & Answers
Hi to all,
I'm interested in finding an introduction about Performance Tuning under Unix (or Linux); can somebody please point me in the right direction?
Best regards (1 Reply)
Discussion started by: domyalex
1 Replies
4. Shell Programming and Scripting
Sorry,
This is out of scope of this group.But I require the clarification pretty urgently.
My Oracle database is parallely enabled.
Still,in a particular table queries do not work "parallely" always.
How is this? (9 Replies)
Discussion started by: kthri
9 Replies
5. Shell Programming and Scripting
Hi All,
In last one week, i have posted many questions in this portal. At last i am succeeded to make my 1st unix script.
following are 2 points where my script is taking tooooo long.
1. Print the total number of records excluding header & footer. I have found that awk 'END{print NR -... (2 Replies)
Discussion started by: Amit.Sagpariya
2 Replies
6. UNIX for Advanced & Expert Users
Hi,
I am facing a strange issue. Application is deployed in a cluster with 2 Unix nodes (with same configuration). On one node the application is working fine but on another node we see this behavior I found using vmstat- when the server is not yet started everything is OK; when you start the... (3 Replies)
Discussion started by: ash.abrol
3 Replies
7. AIX
Please take a look at this system and give your analysis / advice. Can it be tuned to get a better performance?
We are not getting more hardware ressources at the moment.
We have to live with what we have. Application running on the system is SAS. OS is AIX 6.1
Let me know if you need output of... (7 Replies)
Discussion started by: firefox111
7 Replies
8. Solaris
Dear all,
I have a Local zone , where users feel that performance is not good.
Is it wise to collect the inputs from the local zone rather than taking from the global zone.
And also Can I tune from Global zone , so that it will reflect in local zone.
Rgds
rj (2 Replies)
Discussion started by: jegaraman
2 Replies
9. Solaris
Hello Forum,
Well I am fairly new to this Solaris os thing. One thing I would like to check for system health and performance.
I know the codes like
prstat,vmstat,sar,iostat,netstat,prtdiag -v,
What else does a want to be sys admin have to look for when checking a solaris box?
I know... (3 Replies)
Discussion started by: br1an
3 Replies
10. AIX
I have a IBM Power9 server coupled with a NVMe StorWize V7000 GEN3 storage, doing some benchmarks and noticing that single thread I/O (80% Read / 20% Write, common OLTP I/O profile) seems slow.
./xdisk -R0 -r80 -b 8k -M 1 -f /usr1/testing -t60 -OD -V
BS Proc AIO read% IO Flag IO/s ... (8 Replies)
Discussion started by: c3rb3rus
8 Replies
LEARN ABOUT OPENSOLARIS
dfmounts_nfs
dfmounts_nfs(1M) System Administration Commands dfmounts_nfs(1M)
NAME
dfmounts_nfs - display mounted NFS resource information
SYNOPSIS
dfmounts [-F nfs] [-h] [server]...
DESCRIPTION
dfmounts shows the local resources shared through NFS, along with the list of clients that have mounted the resource. The -F flag may be
omitted if NFS is the only file system type listed in the file /etc/dfs/fstypes.
dfmounts without options, displays all remote resources mounted on the local system, regardless of file system type.
The output of dfmounts consists of an optional header line (suppressed with the -h flag) followed by a list of lines containing whitespace-
separated fields. For each resource, the fields are:
resource server pathname clients ...
where
resource Does not apply to NFS. Printed as a hyphen (-).
server Specifies the system from which the resource was mounted.
pathname Specifies the pathname that must be given to the share(1M) command.
clients Is a comma-separated list of systems that have mounted the resource.
OPTIONS
-F nfs Specifies the nfs-FSType.
-h Suppress header line in output.
server Displays information about the resources mounted from each server, where server can be any system on the network. If no server
is specified, the server is assumed to be the local system.
FILES
/etc/dfs/fstypes
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWnfscu |
+-----------------------------+-----------------------------+
SEE ALSO
mount(1M), share(1M), unshare(1M), attributes(5)
SunOS 5.11 6 Nov 2000 dfmounts_nfs(1M)