09-11-2009
9 More Discussions You Might Find Interesting
1. Filesystems, Disks and Memory
Can some one please tell me how to find out the proccess ID that is holding up a file.
I am attempting to remove a file and I am getting a message stating that it is busy.
i.e
rm filename
filename: 777 mode ? (y/n) y
rm: filename not removed. Text file busy
Thanks in advance. (1 Reply)
Discussion started by: jxh461
1 Replies
2. UNIX for Dummies Questions & Answers
How can I find out what C++ compilers are available on my system?
Thanks in advance (7 Replies)
Discussion started by: HelpMeIAmLost
7 Replies
3. UNIX for Dummies Questions & Answers
Can someone tell me the command to display the info about the CPU? I need the CPI id.. of my SUN box. Solaris 8.
It's some totally un-intuitive command, and i can't recall it.
tnx. (3 Replies)
Discussion started by: ireeneek
3 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I have here a hard drive from a computer that was damaged, and now the costumer needs the data on the hard drive, but doesn't have any other computer to read data.
I don't really know what file system is on the disk.
How can I find out what file system is on the disk so I can read the... (4 Replies)
Discussion started by: dmarques
4 Replies
5. UNIX for Dummies Questions & Answers
Hi,
when I run sfdisk -l get:
Disk /dev/sda: 19452 cylinders, 255 heads, 63 sectors/track
Units = cylinders of 8225280 bytes, blocks of 1024 bytes, counting from 0
Device Boot Start End #cyls #blocks Id System
/dev/sda1 * 0+ 12 13- 104391 83 Linux... (1 Reply)
Discussion started by: mojoman
1 Replies
6. Solaris
Hello All,
I have noticed that one of my servers, the busiest has become increasingly slow to respond and execute commands, the running applications appear to be fine though.
Here is some output from vmstat :-
kthr memory page disk faults cpu
r b... (5 Replies)
Discussion started by: Wez
5 Replies
7. UNIX for Advanced & Expert Users
Hi,
We have a filesystem mystery on our hands. Given:
2 machines, A and Aa.
Machine Aa is the problem machine.
Machine A is running Ubuntu, kernel 2.6.22.9 #1 SMP Wed Feb 20 08:46:16 CST 2008 x86_64 GNU/Linux. Machine Aa is running RHEL5.3, kernel 2.6.18-128.el5 #1 SMP Wed Dec 17 11:41:38... (2 Replies)
Discussion started by: mschwage
2 Replies
8. UNIX for Dummies Questions & Answers
I am familiar with using "lsof <filename>" or "fuser <filename>" to determine what process has a given file (usually a .nfs) open. However, I recently used this command and it returned a blank list. I suspect the process that has the .nfs file open might be on another system. Is there a way... (2 Replies)
Discussion started by: Special_K
2 Replies
9. Shell Programming and Scripting
I am trying to build a list of all files ending in *.cbl in the system, but when I try find / -name *.cbl, I only find one specific file name that is alphabetically first. Is there something I'm missing?
TIA
---------- Post updated at 11:20 AM ---------- Previous update was at 11:15 AM... (1 Reply)
Discussion started by: wbport
1 Replies
iotop(1m) USER COMMANDS iotop(1m)
NAME
iotop - display top disk I/O events by process. Uses DTrace.
SYNOPSIS
iotop [-C] [-D|-o|-P] [-j|-Z] [-d device] [-f filename] [-m mount_point] [-t top] [interval [count]]
DESCRIPTION
iotop tracks disk I/O by process, and prints a summary report that is refreshed every interval.
This is measuring disk events that have made it past system caches.
Since this uses DTrace, only users with root privileges can run this command.
OPTIONS
-C don't clear the screen
-D print delta times - elapsed, us
-j print project ID
-o print disk delta times, us
-P print %I/O (disk delta times)
-Z print zone ID
-d device
instance name to snoop (eg, dad0)
-f filename
full pathname of file to snoop
-m mount_point
mountpoint for filesystem to snoop
-t top print top number only
EXAMPLES
Default output, print summary every 5 seconds
# iotop
One second samples,
# iotop 1
print %I/O (time based),
# iotop -P
Snoop events on the root filesystem only,
# iotop -m /
Print top 20 lines only,
# iotop -t 20
Print 12 x 5 second samples, scrolling,
# iotop -C 5 12
FIELDS
UID user ID
PID process ID
PPID parent process ID
PROJ project ID
ZONE zone ID
CMD command name for the process
DEVICE device name
MAJ device major number
MIN device minor number
D direction, Read or Write
BYTES total size of operations, bytes
ELAPSED
total elapsed times from request to completion, us (this is the elapsed time from the disk request (strategy) to the disk completion
(iodone))
DISKTIME
total times for disk to complete request, us (this is the time for the disk to complete that event since it's last event (time
between iodones), or, the time to the strategy if the disk had been idle)
%I/O percent disk I/O, based on time (DISKTIME)
load 1 minute load average
disk_r total disk read Kb for sample
disk_w total disk write Kb for sample
DOCUMENTATION
See the DTraceToolkit for further documentation under the Docs directory. The DTraceToolkit docs may include full worked examples with ver-
bose descriptions explaining the output.
EXIT
iotop will run forever until Ctrl-C is hit, or the specified interval is reached.
AUTHOR
Brendan Gregg [Sydney, Australia]
SEE ALSO
iosnoop(1M), dtrace(1M)
version 0.75 Oct 25, 2005 iotop(1m)