[Xen-users] xenstored is doing a lot of IO

[JP P <storm66@xxxxxxxxxxxxxxxx>]

Hello,

I see that the "xenstored" process is doing a lot of IO, here is the
output of "iotop" :
==========================================================================
Total DISK READ: 0.00 B/s | Total DISK WRITE: 1856.17 K/s
  TID  PRIO  USER     DISK READ  DISK WRITE  SWAPIN     IO>
COMMAND                                              
 3634 be/4 root        0.00 B/s 1773.06 K/s  0.00 %  0.17 % xenstored
--pid-file /var/run/xenstore.pid
 2127 be/3 root        0.00 B/s    6.60 K/s  0.00 %  0.03 % [kjournald]
 1140 be/3 root        0.00 B/s   19.79 K/s  0.00 %  0.02 % [kjournald]
 2652 be/4 root        0.00 B/s    2.64 K/s  0.00 %  0.00 % rsyslogd -c4
    1 be/4 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % init [3]
    2 be/3 root        0.00 B/s    0.00 B/s  0.00 %  0.00 % [kthreadd]
==========================================================================
The machine is quiet (except for me writing this mail), so the IO level
is not understandable.
At the time of the image there were only disk writes but there ara
sometimes disk reads.

I get also "strange" messages in xend-debug.log :
===========================================================================
Traceback (most recent call last):
  File "/usr/lib/python2.5/SocketServer.py", line 464, in
process_request_thread
    self.finish_request(request, client_address)
  File "/usr/lib/python2.5/SocketServer.py", line 254, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "usr/lib/python2.5/site-packages/xen/util/xmlrpclib2.py", line
106, in <lambda>
    requestHandler(allowed, x, y, z)),
  File "usr/lib/python2.5/site-packages/xen/util/xmlrpclib2.py", line
65, in __init__
    server)
  File "/usr/lib/python2.5/SocketServer.py", line 522, in __init__
    self.handle()
  File "/usr/lib/python2.5/BaseHTTPServer.py", line 316, in handle
    self.handle_one_request()
  File "/usr/lib/python2.5/BaseHTTPServer.py", line 299, in
handle_one_request
    self.raw_requestline = self.rfile.readline()
  File "/usr/lib/python2.5/socket.py", line 381, in readline
    data = self._sock.recv(self._rbufsize)
Error: [('SSL routines', 'SSL23_GET_CLIENT_HELLO', 'http request')]
==============================================================================

System : AMD 905e (Quadcore) Ram 8G, some disks
Distro : Debian squeeze "locked at a stable state"
Xen : 4.0.0 locally compiled
Kernel-xen : 2.6.31.4, 2.6.32.11

Any ideas ?

Regards

JP P






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