Debian becomes slow!


 
Thread Tools Search this Thread
Top Forums UNIX for Advanced & Expert Users Debian becomes slow!
# 1  
Old 09-01-2008
Debian becomes slow!

Hi all,
I've a debian 4 etch machine which runs on a HP Proliant G5 server. My server became too slow yesterday. I restarted the it and also try to run in Run Level 1 but nothing changed. This is the status of my debian box:

Code:
top - 12:33:11 up 34 min,  3 users,  load average: 0.00, 0.03, 0.21
Tasks: 158 total,   1 running, 157 sleeping,   0 stopped,   0 zombie
Cpu(s):  0.7%us,  0.2%sy,  0.0%ni, 95.9%id,  3.2%wa,  0.0%hi,  0.0%si,  0.0%st
Mem:   4149764k total,   992552k used,  3157212k free,    51816k buffers
Swap:  5855684k total,        0k used,  5855684k free,   818760k cached

Also I ran the rkhunter and chkrootkit but they found no rootkit in the server. The strang thing is some commands are fast like "cd" but some of them are slow like "ls -aHl" in some places for example in the /root and also the login process takes a lot of time to be done.

Does anyone have any suggestion?

Thanks in advance.
# 2  
Old 09-01-2008
Are there lots of files (perhaps hidden) in the directories where it's slow? The CPU load doesn't seem to explain anything so it's probably I/O congestion of one kind or another. (The 3.2% waiting might or might not seem high; on my fairly loaded system, I'm seeing waiting percentages between 0 and 1, more towards 0.)
# 3  
Old 09-01-2008
The result of iostat is here:
Code:
myserver:/etc# iostat
Linux 2.6.18-6-686-bigmem (myserver)       09/01/2008

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           0.61    0.00    0.23    6.88    0.00   92.28

Device:            tps   Blk_read/s   Blk_wrtn/s   Blk_read   Blk_wrtn
cciss/c0d0      146.01      1632.76       263.24    1008194     162544
cciss/c0d1        0.10         1.49         0.00        922          0

As you said my iowait is high. What can I do to decrease it?
But I think this is not the only problem of the server. I've another sever with iowait about 3 but it runs fast and without any poblem.
Login or Register to Ask a Question

Previous Thread | Next Thread

7 More Discussions You Might Find Interesting

1. Debian

Need to upgrade Debian 7.8 to Debian 8.5 (Not 8.5)

Hello, I need to upgrade my Debian system 7.8 to 8.5 but by default via apt-get It moves to 8.6 version(latest stable version). I'm new to Debian so didn't figure out the solution. I've checked few suggestions over internet like editing apt source list file using snapshot archive. Please... (2 Replies)
Discussion started by: Mannu2525
2 Replies

2. UNIX Desktop Questions & Answers

Ftp is slow

hi, good morning. Ma trying to ftp from one AIX machine to another on the same segment of the network. The ftp to eshtablish connection from machine A to machine B is quick, but the reverse is taking is much time (2 mins). anyone can help me to solve this issue please (1 Reply)
Discussion started by: kamaldev
1 Replies

3. UNIX for Dummies Questions & Answers

How do I slow down a process?

Hello, I've been searching for something that slows down a process for some time now. Slow down as in make time pass by slower. I have rarely turned to asking a forum in the past but at this point I've given up. For example: if I made a program that would print "Hello" in 5 seconds, I would use... (18 Replies)
Discussion started by: Nathan1
18 Replies

4. Solaris

Slow Login

Hi All, I have problem when i write my user name to login to my server late (about 10 min) to give me field of password if u know how i can solve it? Thanks (4 Replies)
Discussion started by: mass1123
4 Replies

5. Solaris

Slow Backup

Dear Gurus, I am experincing very slow backup on a DLT 8000 tape drive. Knowing that the transfer rate of this tape is 6 MB/s, we have a write rate of 4 MB/s, no waits, average service time about 25 % and the disaster 99 % busy percentage. uname -a SunOS DCHQINTA1 5.9 Generic_118558-06... (1 Reply)
Discussion started by: Negm
1 Replies

6. UNIX for Dummies Questions & Answers

Slow System

Hi, I have an SCO-Unix server running. There are some processes (unknown to me) which consume a lot of the system resources. This slows down the server dramatically. Is there a command or program that monitors what processes are using the cpu, disk, etc.. and tell me how excessive and how... (3 Replies)
Discussion started by: Hansaplast
3 Replies

7. Post Here to Contact Site Administrators and Moderators

Slow

The site has gone slow for quite some time... Can you do somethin abt it (2 Replies)
Discussion started by: DPAI
2 Replies
Login or Register to Ask a Question