Hi,
First I appreciate for you all, with your last week's points mentioned in the
problem I meet with slow samba vfs write performance.
Then I use fastcopy software to test windows clients write performance, it
tells the same performance with iozone rewrite results, reach 450MB/s each
client.
Then I use the same smb.conf test read performance, it shows slow read
performance compare with write performance,
I received two clients total result:
500MB/s read perf
900MB/s write perf
I tested the iozone in the mount dir that is mounted with a raid5 block device:
writers = 674063.36 KB/sec
readers = 502945.33 KB/sec
then i make the same test in fuse mount dir:
writers = 799379.41 KB/sec
readers = 898367.59 KB/sec
it show almost the same performance in read and write, so i was confused with
the samba vfs client test:
500MB/s read perf
900MB/s write perf
then i want to test vfs use smb.conf sendfile option, but gluster-vfs currently
not supported.
gluster server volume also set:
performance.read-ahead-page-count: 16
performance.cache-size: 256MB
smb.conf
[global]
workgroup = MYGROUP
server string = DCS Samba Server
log file = /var/log/samba/log.vfs
max log size = 500000
# use sendfile = true
aio read size = 262144
aio write size = 262144
aio write behind = true
min receivefile size = 262144
write cache size = 268435456
security = user
passdb backend = tdbsam
load printers = yes
cups options = raw
read raw = yes
write raw = yes
max xmit = 262144
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=262144
SO_SNDBUF=262144
kernel oplocks = no
stat cache = no
So any suggestions tuning the read performance,
Is gluster-vfs aio & sendfile coming soon?
Thank You!
-kane _______________________________________________
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