[Gluster-users] samba performance downgrade with glusterfs backend
nuaa_liuben at sina.com
Thu Oct 11 07:03:40 UTC 2012
We found that samba performance downgrade a lot with glusterfs backend. volume info as followed,
Volume Name: vol1
Number of Bricks: 1
Use dd (bs=1MB) or iozone (block=1MB) to test write performance, about 400MB/s.
#dd if=/dev/zero of=dd.dat bs=1MB count=1k
1024+0 records in
1024+0 records out
1024000000 bytes (1.0 GB) copied, 2.6142 s, 392 MB/s
But exporting with samba, use 4 Win7 clients to test with SANergy/Iometer, write performance only about 170MB/s.
Command line used: iozone -s 1g -r 1m -i 0 -t 4
Output is in Kbytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 Kbytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
Throughput test with 4 processes
Each process writes a 1048576 Kbyte file in 1024 Kbyte records
Children see throughput for 4 initial writers = 171295.03 KB/sec
Parent sees throughput for 4 initial writers = 170732.54 KB/sec
Min throughput per process = 42684.70 KB/sec
Max throughput per process = 42991.59 KB/sec
Avg throughput per process = 42823.76 KB/sec
Min xfer = 1041408.00 KB
log file = /var/log/samba/log.%m
max log size = 50
guest account = nobody
map to guest = bad password
posix locking = no
max protocol = SMB2
socket options = TCP_NODELAY IPTOS_LOWDELAY
comment = None
path = /mnt/glusterfs
browseable = yes
read only = no
hosts allow =
hosts deny =
guest ok = yes
Anyone meet such issues?
thanks a lot
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