Hi,
I am new to AIX and I am trying to look into a performance issue with an C-Isam based application that uses Asynchronous IO. I ran iostat -D to have a look at the disks and saw what seemed to be some big figures ocurring in the queues section such as waits in the service queue of 3.1... (2 Replies)
iostat -e gives the soft, hard and transport error information in Solaris.
What is the equivalent command in the other flavors of Unix AIX HP Linux.
Thanks
Prasi (1 Reply)
Hi,
I got a request from a client to check on their server's cpu, memory and disk utilization. Am planning to use the sar and iostat commands to achieve this. The server is used for sending and receiving messages between the stockbrokers, so I was thinking to run the commands during the market... (9 Replies)
I have a file which contains data as below:
-----------------------------------------------------------------------------------------------
GSPWeb Statistics for the period of last 20 days... (3 Replies)
Hi Guys,
I have a text file with ";" like separator
F1;F2;F3;F4;F5
444;100041;IT;GLOB;1800000000
444;100041;TM;GLOB;1000000000
444;10300264;IT;GLOB;2000000000
444;10300264;IT;GLOB;2500000000
I have to sum the cullums F5 for same F2 and F3 collums
The result must be:
... (7 Replies)
Basically I have to process a text file which has been sorted this way:
John 12
John 13
John 10
John 900
Peter 20
Peter 30
Peter 32
The first column is a name, and the second an arbitrary value, both delimited by a space. How can I sum them up such that it would become:
John 935... (2 Replies)
I need help reading and summing some values in a file that looks like the following. This is an Oracle trace file. Oracle has as utility to do this,but it doesn't work properly unless my sql statement is done. I want to read the file and sum up some values to let me know how the query/job is... (0 Replies)
Hi, everyone.
I need to write a program to get io info based on libperfstat.
But the "write time" of a disk is just half of the value get from iostat.
I'm confused and can't explain. Help please.
How I calculate "write service time per sec":
In iostat:
write service... (0 Replies)
data file contains
failed=24
error=23
error=163
failed=36
error=903
i need to get a total count of each value above. i'm looking for the most efficient method to do this as the datafile i provided is just a sample. the actual data can be several hundred thousands of lines.
so from... (3 Replies)
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
LEARN ABOUT CENTOS
foreach
foreach(n) Tcl Built-In Commands foreach(n)
__________________________________________________________________________________________________________________________________________________NAME
foreach - Iterate over all elements in one or more lists
SYNOPSIS
foreach varname list body
foreach varlist1 list1 ?varlist2 list2 ...? body
_________________________________________________________________DESCRIPTION
The foreach command implements a loop where the loop variable(s) take on values from one or more lists. In the simplest case there is one
loop variable, varname, and one list, list, that is a list of values to assign to varname. The body argument is a Tcl script. For each
element of list (in order from first to last), foreach assigns the contents of the element to varname as if the lindex command had been
used to extract the element, then calls the Tcl interpreter to execute body.
In the general case there can be more than one value list (e.g., list1 and list2), and each value list can be associated with a list of
loop variables (e.g., varlist1 and varlist2). During each iteration of the loop the variables of each varlist are assigned consecutive
values from the corresponding list. Values in each list are used in order from first to last, and each value is used exactly once. The
total number of loop iterations is large enough to use up all the values from all the value lists. If a value list does not contain enough
elements for each of its loop variables in each iteration, empty values are used for the missing elements.
The break and continue statements may be invoked inside body, with the same effect as in the for command. Foreach returns an empty string.
EXAMPLES
This loop prints every value in a list together with the square and cube of the value:
set values {1 3 5 7 2 4 6 8} ;# Odd numbers first, for fun!
puts "Value Square Cube" ;# Neat-looking header
foreach x $values { ;# Now loop and print...
puts " $x [expr {$x**2}] [expr {$x**3}]"
}
The following loop uses i and j as loop variables to iterate over pairs of elements of a single list.
set x {}
foreach {i j} {a b c d e f} {
lappend x $j $i
}
# The value of x is "b a d c f e"
# There are 3 iterations of the loop.
The next loop uses i and j to iterate over two lists in parallel.
set x {}
foreach i {a b c} j {d e f g} {
lappend x $i $j
}
# The value of x is "a d b e c f {} g"
# There are 4 iterations of the loop.
The two forms are combined in the following example.
set x {}
foreach i {a b c} {j k} {d e f g} {
lappend x $i $j $k
}
# The value of x is "a d e b f g c {} {}"
# There are 3 iterations of the loop.
SEE ALSO
for(n), while(n), break(n), continue(n)
KEYWORDS
foreach, iteration, list, looping
Tcl foreach(n)