10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I noticed when having some trouble with code I was testing that the CPU was becoming exhausted and I would have to reboot. After rebooting a couple times I decided to check for other problems before trying my code again. That's when I noticed that the CPU with the idle process was through the roof:... (5 Replies)
Discussion started by: Azrael
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2. Shell Programming and Scripting
Hi,
I need a script that can automatically kill all processes named "webrepn" and "webrebw" if idle for more than 30 minutes.
Then I will have a Cron Job to run the script every night or 2-3 times a day depends on how this script helps.
Right now, I run "ps -ef | grep webrebn" and "kill -9... (7 Replies)
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3. HP-UX
Hello Anyone:
I have run into an issue that I have never seen or heard of.
Recently on a specific server I have encountered a random issue that I've not been able to repliate on demand... When I view the processes status of a certain process, the information returned to the screen has a... (2 Replies)
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4. Shell Programming and Scripting
Folks,
I have written one script for following condition by referring some of online post in this forum. Please correct it if I'm missing something in it. (OS: AIX 5.3)
List the idle user. (I used whoidle command to list first 15 user and get username, idle time, pid and login time).... (4 Replies)
Discussion started by: sumit30
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5. Shell Programming and Scripting
I am using Ubuntu 9.04. I want to write a shell script to get the information about cpu idle from top command at the real time when i call it, compare cpu idle with 20 (20%), if cpu idle > 20 exit 1, vice versa exit 0. Anybody can help me to resolve it ?
Thanks alot. (7 Replies)
Discussion started by: huyquocnguyen
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6. AIX
Dear Friends ,
I am using DB2 database in AIX 5.3 server . In my server some IDLE process are generated after several times which I need to kill it manually each and every time .
The process I query like following :
root@bagpuss $ ps auxw|sort -r +3|head -10
USER PID %CPU %MEM ... (3 Replies)
Discussion started by: shipon_97
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7. Shell Programming and Scripting
Hi there,
I wrote a script that scans a folder for new files.
I don't want to run it at specific times but only when the computer is NOT busy.
I tried to use nice but it doesn't really work. I mean, even if my process has less priority, it still slows down the other processes. I did a test... (3 Replies)
Discussion started by: chebarbudo
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8. Shell Programming and Scripting
I need a script to kill those process id whose idle time is more than 30min
plz help me (3 Replies)
Discussion started by: salil2012
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9. UNIX for Dummies Questions & Answers
We are running AIX 5.3 and for ICICS Printing we have process called cicstermp runing whcih attaches the print to print queue
But is process is triggered when ever a print is to be given
Can we find the processes which are idle
I mean every time a print is given it creats a new cicstermp... (1 Reply)
Discussion started by: pbsrinivas
1 Replies
10. Shell Programming and Scripting
Matez,
I have a list of process id's in a text file. I want to know how to find the idle time of a process which are more than 300secs and kill them accordingly.
Could you please help me to get these details. I want to write a shell script with this.
Thanks..Krish :) (36 Replies)
Discussion started by: Krrishv
36 Replies
nfsiod(8) System Manager's Manual nfsiod(8)
NAME
nfsiod, biod - The local NFS compatible asynchronous I/O daemon
SYNOPSIS
nfsiod [ numthreads ]
DESCRIPTION
The nfsiod daemon runs on an NFS compatible client machine and spawns several IO threads to service asynchronous I/O requests to its
server. The I/O threads improve performance of both NFS reads and writes. Both try to enlist the aid of an idle I/O thread. If none is
available, the process itself issues the request to the server and waits for the reply.
The optimum number of I/O threads to run depends on many variables, such as how quickly the client will be writing, how many files will be
accessed simultaneously, and the behaviour of the NFS server. For use with a Tru64 UNIX server, 7 is a good number of I/O threads for most
systems.
When reading, if the client believes the process is reading a file sequentially, it requests an I/O thread to read a block ahead of what
the process is currently requesting. If the readahead completes before the process asks for that block, then the subsequent read system
call for that data completes immediately and does not have to wait for the NFS request to complete. Read ahead will be triggered again so
the read may find that next block available as well.
When writing a file, the client takes the process's data, passes the request to an I/O thread and immediately returns to the process. If
the process is writing data faster than the network or server can process, then eventually all the I/O threads become busy and the process
has to handle a NFS write itself. This means the process has to wait until the server finishes the write. For Tru64 UNIX servers, the NFS
block size is 8Kb and UFS tries to cluster I/O 64Kbs at a time. If the client is running with 7 I/O threads, 8 write requests can be in
progress at once. This allows the client and server to write data 64Kbs at a time and is the reason for recommending 7 I/O threads.
Unlike nfsd, each client thread can use either UDP or TCP. However, if TCP mounts are active, the nfsiod process will time out, close idle
TCP connections, and acknowledge any connections closed by the server.
The nfsiod process is also responsible for syncing the access time and modify times for special files and named pipes (fifos). Because I/O
to these files does not go through the NFS server, NFS clients have to directly update the access time and modify time attributes.
The client threads are implemented as kernel threads; they are part of Process ID 0, not the nfsiod process. The ps axml command displays
idle I/O threads under PID 0. Idle threads will be waiting on nfsiod_wait. Therefore, if 7 I/O threads are configured, only 1 nfsiod
process is displayed in the output from the ps command, although 7 client threads are available to handle NFS requests.
FILES
Specifies the command path Specifies the file for logging NFS activity.
RELATED INFORMATION
Commands: nfsd(8), nfsstat(8)
Daemons: async_daemon(2) delim off
nfsiod(8)