[Gluster-users] gluster's cpuload is too high on specific birck daemon

2011-07-27 Thread 공용준(yongjoon kong)/Cloud Computing 기술담당/SKCC 
Hello, 

I'm gluster with distributed-replicated mode(4 brick server)

And 10client server mount gluster volume brick1 server. ( mount -t glustefs 
brick1:/volume /mnt)

And there's very strange thing. 

The brick1's cpu load is too high. From 'top' command, it's over 400%
But other brick's load is too low. 

Is there any reason for this? Or Is there anyway tracking down this issue?

Thanks.


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Re: [Gluster-users] gluster's cpuload is too high on specific birck daemon

2011-07-27 Thread Pavan T C 
On Wednesday 27 July 2011 01:45 PM, 공용준(yongjoon kong)/Cloud 
Computing 기술담당/SKCC wrote:

Hello,

I'm gluster with distributed-replicated mode(4 brick server)

And 10client server mount gluster volume brick1 server. ( mount -t glustefs 
brick1:/volume /mnt)

And there's very strange thing.

The brick1's cpu load is too high. From 'top' command, it's over 400%
But other brick's load is too low.


It is possible that an AFR self heal is getting triggered.
On the brick, run the following command:

strace -f -c -p glusterfs.pid

and provide the output.

Pavan



Is there any reason for this? Or Is there anyway tracking down this issue?

Thanks.


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Re: [Gluster-users] gluster's cpuload is too high on specific birck daemon

2011-07-27 Thread 공용준(yongjoon kong)/Cloud Computing 기술담당/SKCC 
Here's my result of strace -f -c -p glusterPID


Process 1993 detached
Process 1994 detached
Process 1996 detached
Process 2004 detached
Process 2006 detached
Process 2013 detached
Process 3469 detached
% time seconds  usecs/call callserrors syscall
-- --- --- - - 
 38.39   23.261809   11899  195586 lgetxattr
 28.31   17.155779   35667   48152 futex
 16.58   10.046922   70258   143   epoll_wait
 15.339.292713  92927110   nanosleep
  1.360.826873  826873 1   restart_syscall
  0.010.007801  51   154   getdents
  0.000.002299   4   572   readv
  0.000.002176   1  1787   lstat
  0.000.001078  9012   read
  0.000.000896   6   141   writev
  0.000.000472   3   142   lseek
  0.000.000207   2   126   clock_gettime
  0.000.000194  49 4   munmap
  0.000.79   422   fcntl
  0.000.00   026   open
  0.000.00   025   close
  0.000.00   020   stat
  0.000.00   0 4   fstat
  0.000.00   0 4   mmap
  0.000.00   0 4   statfs
-- --- --- - - 
100.00   60.599298  5633   138 total


-Original Message-
From: Pavan T C [mailto:t...@gluster.com] 
Sent: Wednesday, July 27, 2011 6:18 PM
To: 공용준(yongjoon kong)/Cloud Computing 기술담당/SKCC
Cc: gluster-users@gluster.org
Subject: Re: [Gluster-users] gluster's cpuload is too high on specific birck 
daemon

On Wednesday 27 July 2011 01:45 PM, 공용준(yongjoon kong)/Cloud 
Computing 기술담당/SKCC wrote:
 Hello,

 I'm gluster with distributed-replicated mode(4 brick server)

 And 10client server mount gluster volume brick1 server. ( mount -t glustefs 
 brick1:/volume /mnt)

 And there's very strange thing.

 The brick1's cpu load is too high. From 'top' command, it's over 400%
 But other brick's load is too low.

It is possible that an AFR self heal is getting triggered.
On the brick, run the following command:

strace -f -c -p glusterfs.pid

and provide the output.

Pavan


 Is there any reason for this? Or Is there anyway tracking down this issue?

 Thanks.


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 Gluster-users@gluster.org
 http://gluster.org/cgi-bin/mailman/listinfo/gluster-users

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