Can you decrease the cache size in io-cache (say to 128MB)? If the files being served are bigger than this size, you can as well remove io-cache from configuration. Do let us know if this solves your issue.
regards,
On Tue, Feb 23, 2010 at 1:25 PM, Daniel Maher <dma+gluster@xxxxxxxxx> wrote:
Raghavendra G wrote:Snapshot :
* What does the top output corresponding to glusterfs say? what is the memory usage and cpu usage?
* Do you find anything interesting in glusterfs client log files? Can we get the log files?
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1185 root 20 0 2478m 909m 564 D 11.3 90.1 1064:50 glusterfs
Over a monitored period of 30 minutes, the CPU usage hovered between 7 and 12, and Mem usage hovered at 90 to 91.
================================================================================
Version : glusterfs 3.0.0 built on Feb 3 2010 14:39:23
git: 2.0.1-886-g8379edd
Starting Time: 2010-02-17 13:58:41
Command line : /usr/sbin/glusterfs --log-level=NORMAL --volfile=/etc/glusterfs/replicated-tcp.vol /opt/gluster
PID : 1185
System name : Linux
Nodename : 169.install.pxe
Kernel Release : 2.6.26.8-57.fc8
Hardware Identifier: i686
Given volfile:
+------------------------------------------------------------------------------+
1: ## file auto generated by /usr/bin/glusterfs-volgen (mount.vol)
2: # Cmd line:
3: # $ /usr/bin/glusterfs-volgen --name replicated --raid 1 s01:/opt/gluster s02:/opt/gluster
4:
5: # RAID 1
6: # TRANSPORT-TYPE tcp
7: volume s01-1
8: type protocol/client
9: option transport-type tcp
10: option remote-host s01
11: option transport.socket.nodelay on
12: option transport.remote-port 6996
13: option remote-subvolume brick1
14: end-volume
15:
16: volume s02-1
17: type protocol/client
18: option transport-type tcp
19: option remote-host s02
20: option transport.socket.nodelay on
21: option transport.remote-port 6996
22: option remote-subvolume brick1
23: end-volume
24:
25: volume mirror-0
26: type cluster/replicate
27: subvolumes s01-1 s02-1
28: end-volume
29:
30: volume writebehind
31: type performance/write-behind
32: option cache-size 4MB
33: subvolumes mirror-0
34: end-volume
35:
36: volume readahead
37: type performance/read-ahead
38: option page-count 4
39: subvolumes writebehind
40: end-volume
41:
42: volume iocache
43: type performance/io-cache
44: option cache-size 1GB
45: option cache-timeout 1
46: subvolumes readahead
47: end-volume
48:
49: volume quickread
50: type performance/quick-read
51: option cache-timeout 1
52: option max-file-size 64kB
53: subvolumes iocache
54: end-volume
55:
56: volume statprefetch
57: type performance/stat-prefetch
58: subvolumes quickread
59: end-volume
60:
+------------------------------------------------------------------------------+
[2010-02-17 13:58:41] W [xlator.c:655:validate_xlator_volume_options] s02-1: option 'transport.remote-port' is deprecated, preferred is 'remote-port', continuing with correction
[2010-02-17 13:58:41] W [xlator.c:655:validate_xlator_volume_options] s01-1: option 'transport.remote-port' is deprecated, preferred is 'remote-port', continuing with correction
[2010-02-17 13:58:52] E [socket.c:760:socket_connect_finish] s01-1: connection to failed (Connection refused)
[2010-02-17 13:58:52] E [socket.c:760:socket_connect_finish] s01-1: connection to failed (Connection refused)
[2010-02-17 13:58:58] E [socket.c:760:socket_connect_finish] s02-1: connection to failed (No route to host)
[2010-02-17 13:58:58] E [socket.c:760:socket_connect_finish] s02-1: connection to failed (No route to host)
[2010-02-17 14:06:23] N [client-protocol.c:6224:client_setvolume_cbk] s01-1: Connected to 10.0.0.38:6996, attached to remote volume 'brick1'.
[2010-02-17 14:06:23] N [afr.c:2625:notify] mirror-0: Subvolume 's01-1' came back up; going online.
[2010-02-17 14:06:23] N [client-protocol.c:6224:client_setvolume_cbk] s01-1: Connected to 10.0.0.38:6996, attached to remote volume 'brick1'.
[2010-02-17 14:06:23] N [afr.c:2625:notify] mirror-0: Subvolume 's01-1' came back up; going online.
[2010-02-17 14:06:33] N [client-protocol.c:6224:client_setvolume_cbk] s02-1: Connected to 10.0.0.39:6996, attached to remote volume 'brick1'.
[2010-02-17 14:06:33] N [client-protocol.c:6224:client_setvolume_cbk] s02-1: Connected to 10.0.0.39:6996, attached to remote volume 'brick1'.
[2010-02-20 20:02:43] E [client-protocol.c:415:client_ping_timer_expired] s02-1: Server 10.0.0.39:6996 has not responded in the last 42 seconds, disconnecting.
[2010-02-20 20:02:47] E [saved-frames.c:165:saved_frames_unwind] s02-1: forced unwinding frame type(2) op(PING)
[2010-02-20 20:02:48] N [client-protocol.c:6972:notify] s02-1: disconnected
[2010-02-20 20:04:01] N [client-protocol.c:6224:client_setvolume_cbk] s02-1: Connected to 10.0.0.39:6996, attached to remote volume 'brick1'.
[2010-02-20 20:04:01] N [client-protocol.c:6224:client_setvolume_cbk] s02-1: Connected to 10.0.0.39:6996, attached to remote volume 'brick1'.
[2010-02-22 02:37:28] E [client-protocol.c:415:client_ping_timer_expired] s02-1: Server 10.0.0.39:6996 has not responded in the last 42 seconds, disconnecting.
[2010-02-22 02:37:56] E [saved-frames.c:165:saved_frames_unwind] s02-1: forced unwinding frame type(1) op(READ)
[2010-02-22 02:37:56] E [saved-frames.c:165:saved_frames_unwind] s02-1: forced unwinding frame type(2) op(PING)
[2010-02-22 02:37:56] N [client-protocol.c:6972:notify] s02-1: disconnected
[2010-02-22 02:38:02] N [client-protocol.c:6224:client_setvolume_cbk] s02-1: Connected to 10.0.0.39:6996, attached to remote volume 'brick1'.
[2010-02-22 02:38:02] N [client-protocol.c:6224:client_setvolume_cbk] s02-1: Connected to 10.0.0.39:6996, attached to remote volume 'brick1'.
[2010-02-22 04:19:02] E [client-protocol.c:415:client_ping_timer_expired] s02-1: Server 10.0.0.39:6996 has not responded in the last 42 seconds, disconnecting.
[2010-02-22 04:19:50] E [saved-frames.c:165:saved_frames_unwind] s02-1: forced unwinding frame type(1) op(READ)
[2010-02-22 04:19:50] E [saved-frames.c:165:saved_frames_unwind] s02-1: forced unwinding frame type(2) op(PING)
[2010-02-22 04:19:51] N [client-protocol.c:6972:notify] s02-1: disconnected
[2010-02-22 04:20:33] E [client-protocol.c:415:client_ping_timer_expired] s01-1: Server 10.0.0.38:6996 has not responded in the last 42 seconds, disconnecting.
[2010-02-22 04:20:34] E [saved-frames.c:165:saved_frames_unwind] s01-1: forced unwinding frame type(1) op(READ)
[2010-02-22 04:20:41] E [saved-frames.c:165:saved_frames_unwind] s01-1: forced unwinding frame type(2) op(PING)
[2010-02-22 04:20:41] N [client-protocol.c:6224:client_setvolume_cbk] s02-1: Connected to 10.0.0.39:6996, attached to remote volume 'brick1'.
[2010-02-22 04:20:41] N [client-protocol.c:6972:notify] s01-1: disconnected
[2010-02-22 04:20:41] N [client-protocol.c:6224:client_setvolume_cbk] s02-1: Connected to 10.0.0.39:6996, attached to remote volume 'brick1'.
[2010-02-22 04:20:41] N [afr.c:2625:notify] mirror-0: Subvolume 's02-1' came back up; going online.
[2010-02-22 04:20:41] N [client-protocol.c:6224:client_setvolume_cbk] s01-1: Connected to 10.0.0.38:6996, attached to remote volume 'brick1'.
[2010-02-22 04:20:41] N [client-protocol.c:6224:client_setvolume_cbk] s01-1: Connected to 10.0.0.38:6996, attached to remote volume 'brick1'.
That is the entire client log file. If it would be useful, i can stop the tests, put the Gluster logging into the debug level, and start again. Just let me know.
--
Daniel Maher <dma+gluster AT witbe DOT net>
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--
Raghavendra G
