We use command for testing purpose on FS. I created a file name called "file.500mb" where i need size of 500MB.
Solaris :
# mkfile 500M file.500mb
# du -sh file.500mb
500M file.500mb
bash-3.00# ls -l file.500mb
-rw------T 1 root root 524288000 Feb 17 04:11 file.500mb
We can also do this in other way as below, which creates size of 512MB, we can change the counts/bs depend upon requirement. changing BS will make faster
# dd if=/dev/zero of=/file1g count=500 bs=1024k
500+0 records in
500+0 records out
bash-3.00# du -sh /file1g
500M /file1g
Linux :
Mkfile command will not work, instead we use "dd" command or /dev/urandom as below.
# head -c 1024m /dev/urandom > /fs1/file1g
# du -sh /fs1/file1g
1.1G /fs1/file1g
# cat /dev/urandom /fs1/filename after some times, do ctrl+c to kill,
[OR]
# dd if=/dev/zero of=/fs1/file1g count=500 bs=2048k
500+0 records in
500+0 records out
1048576000 bytes (1.0 GB) copied, 26.3419 seconds, 39.8 MB/s
[root@linux1 admin]# du -sh /fs1/file1g
1001M /fs1/file1g
How to Veiw Solaris System Configuration Information
Several tools are available to examine system configuration information. Some tools require superuser privilege. Other tools can be run by a non-privileged user. Every structure and data item can be examined with the kernel debugger by using mdb on a running system or by booting under kmdb.
The sysdef command provides the values of System V IPC settings, STREAMS tunables, process resource limits, and portions of the tune and v structures. For example, the sysdef “Tunable Parameters” section from on Sun Fire 280R with 2GB RAM as below
* Tunable Parameters
42082304 maximum memory allowed in buffer cache (bufhwm)
30000 maximum number of processes (v.v_proc)
99 maximum global priority in sys class (MAXCLSYSPRI)
29995 maximum processes per user id (v.v_maxup)
30 auto update time limit in seconds (NAUTOUP)
25 page stealing low water mark (GPGSLO)
1 fsflush run rate (FSFLUSHR)
25 minimum resident memory for avoiding deadlock (MINARMEM)
25 minimum swapable memory for avoiding deadlock (MINASMEM)
*
The sysdef command provides the values of System V IPC settings, STREAMS tunables, process resource limits, and portions of the tune and v structures. For example, the sysdef “Tunable Parameters” section from on Sun Fire 280R with 2GB RAM as below
* Tunable Parameters
42082304 maximum memory allowed in buffer cache (bufhwm)
30000 maximum number of processes (v.v_proc)
99 maximum global priority in sys class (MAXCLSYSPRI)
29995 maximum processes per user id (v.v_maxup)
30 auto update time limit in seconds (NAUTOUP)
25 page stealing low water mark (GPGSLO)
1 fsflush run rate (FSFLUSHR)
25 minimum resident memory for avoiding deadlock (MINARMEM)
25 minimum swapable memory for avoiding deadlock (MINASMEM)
*
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