Hi there,
When I run top on my machine it says I have 497M swap space in use, and 380M swap space free,
but I have only allocated 512M swap space to the machine!!!!
Does anyone know how swap used is calculated in the top command?
Thanks... (1 Reply)
Hi All,
Will df+du=Total space allocted for a file system??
Is the above correct. Please correct me If iam wrong.
In one my programs the above is not happening.
Please help me out.
Many thanks.
Regards,
Manas (2 Replies)
i am working with solaris 9 and my disk usages are
# df -k
Filesystem kbytes used avail capacity Mounted on
/dev/dsk/c0t0d0s0 2148263 1902721 202577 91% /
/proc 0 0 0 0% /proc
mnttab 0 0 0 ... (3 Replies)
Hey guys,
I am somewhat new to Solaris - and very new when it comes to mounts.
My problem is that when I installed Solaris, I allocated way too little diskspace to my / mount (it first became obvious now, however, because of new needs).
bash-3.00# df -h
Filesystem size ... (25 Replies)
I need to find available disk space for /home.
$ df /home
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mahhh/VolGroup11-LogVol00
32281452 45028 26034172 15% /
$df /home |tail -1| awk '{print $4}'
15%
The above result shows the... (5 Replies)
Hi,
I want write a script that finds a set of folders written between a certain time and then find the disk space used by those folders. Can someone please help.
Thanks,
Sparcman:( (1 Reply)
Hi All,
I am using SSH Tectia terminal to get the disk space utilization of a particular folder /opt/logs in all the servers one by one using the command df -h and looking through the list of folders manually to get /opt/logs folder disk space used percentage .
The problem here is , it... (2 Replies)
Hi ,
I Would like to know the space allocated by adding up all the allocated space to group of filesystems ..
example ,
df -h|grep /db | awk '{ print $4 }' ---> giving me all the used space on the filesystem but need to know the total used space by adding up all the values (3 Replies)
Discussion started by: nsankineni
3 Replies
LEARN ABOUT HPUX
prealloc
prealloc(2) System Calls Manual prealloc(2)NAME
prealloc - preallocate fast disk storage
SYNOPSIS DESCRIPTION
is used to preallocate space on a disk for faster storage operations.
fildes is a file descriptor obtained from a or system call for an ordinary file of zero length. It must be opened writable, because it
will be written to by size is the size in bytes to be preallocated for the file specified by fildes. At least size bytes will be allo-
cated. Space is allocated in an implementation-dependent fashion for fast sequential reads and writes. The EOF in an extended file is
left at the end of the preallocated area. The current file pointer is left at zero. The file is zero-filled.
Using on a file does not give the file an attribute that is inherited when copying or restoring the file using a program such as or (see
cp(1) and tar(1)). It simply ensures that disk space has been preallocated for size bytes in a manner suited for sequential access. The
file can be extended beyond these limits by operations past the original end of file. However, this space will not necessarily be allo-
cated using any special strategy.
RETURN VALUE
Upon successful completion, returns 0; otherwise, it returns -1 and sets to indicate the error.
ERRORS
fails and no disk space is allocated if any of the following conditions are encountered:
[EBADF] fildes is not a valid open file descriptor opened for writing.
[EDQUOT] User's disk quota block limit has been reached for this file system.
[EFBIG] size exceeds the maximum file size or the process's file size limit. See ulimit(2).
[ENOSPC] Not enough space is left on the device to allocate the requested amount; no space was allocated.
[ENOTEMPTY] fildes not associated with an ordinary file of zero length.
EXAMPLES
Assuming a process has opened a file for writing, the following call to preallocates at least 50000 bytes on disk for the file represented
by file descriptor outfd:
WARNINGS
Allocation of the file space is highly dependent on current disk usage. A successful return does not tell you how fragmented the file
actually might be if the disk is nearing its capacity.
AUTHOR
was developed by HP.
SEE ALSO prealloc(1), creat(2), dup(2), fcntl(2), open(2), prealloc64(2), read(2), ulimit(2), write(2).
prealloc(2)