[Gluster-devel] Slowness and segfault with 313

[Harris Landgarten]

Some more testing:

Patch 308

time tar -cvf /mnt/glusterfs/test/test.tbz 0 1 2 3

real    6m47.947s
user    0m0.180s
sys     0m1.220s

Patch 313

time tar -cvf /mnt/glusterfs/test/test.tbz 0 1 2 3

real    9m21.909s
user    0m0.160s
sys     0m1.470s


Patch 313 also used 50% more memory.

This leads me to suspect the problem is in writebehind or posix-locks

Harris

----- Original Message -----
From: "Harris Landgarten" <harrisl at lhjonline.com>
To: "gluster-devel" <gluster-devel at nongnu.org>
Sent: Saturday, July 14, 2007 2:23:20 PM (GMT-0500) America/New_York
Subject: [Gluster-devel] Slowness and segfault with 313

Last weekend with 299 a full Zimbra backup completed in 27 minutes. This weekend with 313 the backup was only about 1/2 through after 5 hrs. I aborted the backup and the client crashed. The abort would have tried to remove about 4G of files from the /mnt/glusterfs/backups/tmp folder. The following BT was generated from the core:

Core was generated by `[glusterfs]                                                                   '.
Program terminated with signal 11, Segmentation fault.
#0  unify_unlink (frame=0xdec4b30, this=0x80585b0, loc=0xddb98dc) at unify.c:2256
2256      list = loc->inode->private;
(gdb) bt
#0  unify_unlink (frame=0xdec4b30, this=0x80585b0, loc=0xddb98dc) at unify.c:2256
#1  0xb7f32c66 in default_unlink (frame=0xdbc51f8, this=0x80592c0, loc=0xddb98dc) at defaults.c:480
#2  0xb7f32c66 in default_unlink (frame=0xde06ca8, this=0x8059350, loc=0xddb98dc) at defaults.c:480
#3  0x0804ccf3 in fuse_unlink (req=0xdf68980, par=4786914, name=0xcc16770 "BbZslzxnS2Y,8Az0m2v5ExLBXbs=6411-6246.msg1") at fuse-bridge.c:781
#4  0xb7f21461 in fuse_reply_err () from /usr/lib/libfuse.so.2
#5  0xb7f221e3 in fuse_reply_entry () from /usr/lib/libfuse.so.2
#6  0xb7f239c6 in fuse_session_process () from /usr/lib/libfuse.so.2
#7  0x0804abae in fuse_transport_notify (xl=0x8059910, event=2, data=0x8053410) at fuse-bridge.c:1942
#8  0xb7f34cc7 in transport_notify (this=0xddb98dc, event=204699600) at transport.c:152
#9  0xb7f35979 in sys_epoll_iteration (ctx=0xbfb56b14) at epoll.c:54
#10 0xb7f34d9d in poll_iteration (ctx=0xbfb56b14) at transport.c:260
#11 0x0804a29b in main (argc=5, argv=0xbfb56bf4) at glusterfs.c:348



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