Add to methyl's remark:
server 1, 1 CPU:
server 2, 2 CPUs:
In other words 15 more running processes to deal with having half the cpu power of the second...
That said, you did not say if the LVM configurations are identical, or the swap or the memory nor did you mention the SGA size of the oracle DB...
Hi,
I've got some CPU bottleneck on a HP-UX 11 server : i didn't
understand it until i discover i've got an unusual high percentage
of NICE% CPU regarding my DBRMS process (Sybase 12.x).
How do i have to understand it and how to resolve it ?
Thx. (0 Replies)
I've noticed most of my postings here are because of syntax errors.
So I want to begin compiling a large txt file that contains all the "man <cmd>" of the commands I most have problems with. I ran a "man nawk >> nawk.txt" but it included a header/footer on each "page". Anyone know how I'd be... (6 Replies)
Hi I want to implement the nice command in the shell that I am building. I came to know that there is a corresponding nice() system call for the same. But since I will be forking different processes to run different commands typed on the command prompt, is there any way I can make a command... (2 Replies)
Hi,
I have two identical 12 CPU HPUX machines, and I run the same processes on each that load the boxes fully.
top on one reports activity under the NICE (19%) and SYS (18%) columns, while top on the other reports 0% NICE and 16% SYS. What would cause NICE to be zero on one machine and not... (5 Replies)
I have a requirement to separate only some numbers from the input file and produce it in a format.
The input is ( i have took a sample, the actual file contains more than 50000 rows around 840 MB in size)
$cat temp.txt
001 08 002 08 003 06 004 11 005 11 006 08
007 08 008 92* 009 92 010... (1 Reply)
Hi,
I am using SunOS
I want to serch my previous command
from unix prompt
(like on AIX we can search by ESC -k)
how to get in SunOs
urgent help require. (10 Replies)
Hi All,
I work in a multi user environment where my school uses Red Hat Linux server. When I issue commands such as "top" or "users", I get to see what others are doing and what kinds of applications they are running (even ps -aux will give such information). "users" will let me know who else is... (1 Reply)
Hello Folks,
Recently our FreeBSD 7.1 i386 system became very sluggish.
Nothing much is happening over there & whatever is running takes eternity to complete.
All the troubleshooting hinted towards a very high nice percentage.
Can that be the culprit?
Pasting snippets of top command,... (7 Replies)
Discussion started by: vibhor_agarwali
7 Replies
10. Post Here to Contact Site Administrators and Moderators
I noticed a HTML tag opened at the top of the index page. I do not know if this is an error or a coding mistake or it means something else which i do not know.
I felt i raise the issue. Please kindly correct me if i am wrong.
Thanks. (5 Replies)
Discussion started by: despiragado
5 Replies
LEARN ABOUT MOJAVE
bhost
BHOST(5) LAM FILE FORMATS BHOST(5)NAME
bhost - LAM boot schema (host file) format
SYNTAX
#
# comments
#
<machine> [cpu=<cpucount>] [user=<userid>]
<machine> [cpu=<cpucount>] [user=<userid>]
...
DESCRIPTION
A boot schema describes the machines that will combine to form a multicomputer running LAM. It is used by recon(1) to verify initial con-
ditions for running LAM, by lamboot(1) to start LAM, and by lamhalt(1) to terminate LAM (note that lamwipe(1) has been deprecated by the
lamhalt(1) command).
The particular syntax of a LAM boot schema is sometimes called the "host file" syntax. It is line oriented. One line indicates the name
of a machine, typically the full Internet domain name, an optional number of CPUs available on that machine, and optionally the userid with
which to access it.
Common boot schema for a particular site may be created by the system administrator and placed in the installation directory under etc/.
They typically start with the prefix bhost. Individual users usually create their own boot schema, especially if the configurations are
simple.
NAME RESOLUTION
Note that lamboot resolves all names listed in bhost on the node in which lamboot was invoked on. The lamboot(1) man page contains infor-
mation about address resolution, examples on how to handle multiple network interface cards (NICs) in a node, etc.
EXAMPLE
Here is an example three node boot schema:
#
# example LAM host file
#
server.cluster.example.com schedule=no
beowulf1.cluster.example.com cpu=2
beowulf2.cluster.example.com
beowulf2.cluster.example.com
somewhere.else.example.com user=guest
Note that the "guest" ID is significant, since the user has an alternate login ID on somewhere.else.example.com. Additionally note that
beowulf1 has a CPU count of 2 listed (a CPU count of 1 is assumed if it is not given). This value is used by mpirun(1), MPI_Comm_spawn(2),
and MPI_Comm_spawn_multiple(2) for the "C" (or CPU) notation that specifies how many ranks to start. This is particularly useful for run-
ning on SMP machines.
Note the schedule=no clause. This means that LAM will boot a daemon on that node, but by default, will not launch any MPI processes on
that node. This is handy for when you want to control your MPI applications from one node (e.g., a server), but don't want to run any MPI
applications on it. In some environments this is the default (e.g., BProc). See the LAM User's Guide for more details.
beowulf2 is listed twice, but has no specific CPU count listed. In this case, LAM will keep a running tally of the total number of CPUs
for that host. Hence, LAM will calculate that beowulf2 has two CPUs available for use. Calculating the number of CPUs by counting occu-
rances of a hostname is useful in a batch environment where a hostfile may list the same hostname multiple times, indicating that the batch
scheduler has allocated multiple CPUs for a single job (e.g., PBS operates this way).
For the above-mentioned schema, the command "mpirun C foo" would start five instances of the foo program; two on beowulf1, two on beowulf2,
and one on somewhere.else.
FILES
$LAMHOME/etc/bhost.def default boot schema file
SEE ALSO
LAM User's Guide, lamboot(1), lamhalt(1), mpirun(1), MPI_Comm_spawn(1), MPI_Comm_spawn_multiple(1), recon(1), lamwipe(1)LAM 7.1.4 July, 2007 BHOST(5)