02-09-2017
With what you have told us, the application could be a huge bottleneck, the application server could be a huge bottleneck, the database server could be a huge bottleneck, the database application could be a huge bottleneck, or any combination of the above could be a bottleneck.
Running a filesystem backup while running applications that are using files on that filesystem is VERY likely to affect performance of those applications and of the backup software.
We have seen examples in this forum of text processing code that invokes several processes to produce output for each line read from a file containing a few thousand lines that literally ran for more than 10 hours. When that code was replaced by a single awk script with the output fed into sort, the script ran in less than 10 seconds and produced exactly the same output. Could your application code have a similar issues?
To figure out where you need to look, you first need to know what are your major stumbling blocks. Are you swapping processes in and out a lot? (Need more memory?) Are your disks thrashing? (Put files on different filesystems on different disks/controllers?) Are your CPUs running at 100%? (Badly written code or too many users on your system?) Is your network dropping packets? (Loose connections, faulty routes to servers, failing hardware, etc.?) ... ... ...
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LEARN ABOUT CENTOS
pagesize
PAGESIZE(1) General Commands Manual PAGESIZE(1)
NAME
pagesize - Print supported system page sizes
SYNOPSIS
pagesize [options]
DESCRIPTION
The pagesize utility prints the page sizes of a page of memory in bytes, as returned by getpagesizes(3). This is useful when creating por-
table shell scripts, configuring huge page pools with hugeadm or launching applications to use huge pages with hugectl.
If no parameters are specified, pagesize prints the system base page size as returned by getpagesize(). The following parameters affect
what other pagesizes are displayed.
--huge-only, -H
Display all huge pages supported by the system as returned by gethugepagesizes().
--all, -a
Display all page sizes supported by the system.
SEE ALSO
oprofile(1), getpagesize(2), getpagesizes(3), gethugepagesizes(3), hugectl(7), hugeadm(7), libhugetlbfs(7)
AUTHORS
libhugetlbfs was written by various people on the libhugetlbfs-devel mailing list.
October 10, 2008 PAGESIZE(1)