Intermittent "slowdowns" on Solaris 2.6 Post: 26370

Sponsored Content

Special Forums Hardware Filesystems, Disks and Memory Intermittent "slowdowns" on Solaris 2.6 Post 26370 by fiam on Thursday 15th of August 2002 10:17:29 PM

08-15-2002

Registered User

1. What application(s) are running on the server?

We have around 100/150 users at any one time running an in-house app written in c, that access's various CISAM database files ranging in size from 100KB to 70MB.

2. How are the filesystems laid out?

The various database files are spread between three file systems. We use Solstice Disk Suite to stripe and mirror the file systems.

3. How much memory (physical) in the server?

2 GB

4. How much swap space?

4GB

5. What (if any) disk management software is being used?

SDS.

6. Do you have top installed? What does it show as the top processes during the 'problem'?

top doesn't show any process using more than 1 or 2 percent CPU during the "slowdown". Also, the %usr figures from sar during these times are very low, so it doesn't seem to be related to a user process.

7. Has the problem always occurred?

The problems has been occuring for a few months now.

8. What changed recently - more users, more data, more cron jobs, more applications, ....

There have been some changes to the applications and increased data over the last 6 months or so. However, my feeling is that these changes have not caused the problem. We have another identicle machine that has had all the same changes, but is not
experiencing any performance issues.

The users experience extremely slow response times when the performance drops. BAsically the system is almost unusable for them for a few minutes.

The main thing I can't understand is why the disks are indicating 100% busy while the performance problems occur, yet there is very little (less than the normal amount) being written during these times.

fiam

View Public Profile for fiam

Find all posts by fiam

9 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Explain the line "mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'`"

Hi Friends, Can any of you explain me about the below line of code? mn_code=`env|grep "..mn"|awk -F"=" '{print $2}'` Im not able to understand, what exactly it is doing :confused: Any help would be useful for me. Lokesha

2. Solaris

Solaris escape my script from "-" to "/226"

Hello everyone. I beg your guys pardon please. I try to ls -al in many path/directories. So, I put the code in text file which look like below; ls -al / ls -al /etc ls -al /etc/default ... however, when I paste it to Solaris over SecureCRT, it seems the code was escaped from "-" to...

3. Shell Programming and Scripting

cat $como_file | awk /^~/'{print $1","$2","$3","$4}' | sed -e 's/~//g'

hi All, cat file_name | awk /^~/'{print $1","$2","$3","$4}' | sed -e 's/~//g' Can this be done by using sed or awk alone

4. Shell Programming and Scripting

awk command to replace ";" with "|" and ""|" at diferent places in line of file

Hi, I have line in input file as below: 3G_CENTRAL;INDONESIA_(M)_TELKOMSEL;SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL My expected output for line in the file must be : "1-Radon1-cMOC_deg"|"LDIndex"|"3G_CENTRAL|INDONESIA_(M)_TELKOMSEL"|LAST|"SPECIAL_WORLD_GRP_7_FA_2_TELKOMSEL" Can someone...

5. Shell Programming and Scripting

Intermittent "cp: cannot stat" error with nested loop

I have a bash script that has been running (on SUSE 9.3) dozens of times over the past couple of years without error. Recently it has been hitting intermittent “cp: cannot stat FILE: No such file or directory” errors. The script has nested loops that continuously process files in a...

6. Solaris

Printer configuration Migration from Solaris 10 "LP" to Solaris 11 "CUPS"

Need to find a way to import an LP printers.conf file to CUPS. I have some new Solaris 11.1 boxes that need to have 300 printers added.

7. UNIX for Dummies Questions & Answers

Using "mailx" command to read "to" and "cc" email addreses from input file

How to use "mailx" command to do e-mail reading the input file containing email address, where column 1 has name and column 2 containing �To� e-mail address and column 3 contains �cc� e-mail address to include with same email. Sample input file, email.txt Below is an sample code where...

8. Shell Programming and Scripting

Bash script - Print an ascii file using specific font "Latin Modern Mono 12" "regular" "9"

Hello. System : opensuse leap 42.3 I have a bash script that build a text file. I would like the last command doing : print_cmd -o page-left=43 -o page-right=22 -o page-top=28 -o page-bottom=43 -o font=LatinModernMono12:regular:9 some_file.txt where : print_cmd ::= some printing...

9. AIX

Apache 2.4 directory cannot display "Last modified" "Size" "Description"

Hi 2 all, i have had AIX 7.2 :/# /usr/IBMAHS/bin/apachectl -v Server version: Apache/2.4.12 (Unix) Server built: May 25 2015 04:58:27 :/#:/# /usr/IBMAHS/bin/apachectl -M Loaded Modules: core_module (static) so_module (static) http_module (static) mpm_worker_module (static) ...

LEARN ABOUT LINUX

install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)