Here's my results.
The performance test was seq write
On 15/07/13 10:12, Toni F. [ackstorm] wrote:
I'm going to do a performance test with fio to see the difference.
Regards
On 12/07/13 18:15, Dan Mick wrote:
Ceph performance is a very very complicated subject. How does that
compare to other access methods? Say, rbd import/export for an easy
test?
On Jul 12, 2013 8:22 AM, "Toni F. [ackstorm]"
<toni.fuen...@ackstorm.es <mailto:toni.fuen...@ackstorm.es>> wrote:
It works, but the performance is very poor. 100MB/s or less
Which are your performance experience?
Regards
On 12/07/13 13:56, Toni F. [ackstorm] wrote:
It works!
Thanks for all
On 12/07/13 11:23, Toni F. [ackstorm] wrote:
Yes! it seems that i wasn't compiled the rbd support.
System:
State: ready
debug: off
LLDs:
iscsi: ready
Backing stores:
bsg
sg
null
ssc
aio
rdwr (bsoflags sync:direct)
Device types:
disk
cd/dvd
osd
controller
changer
tape
passthrough
iSNS:
iSNS=Off
iSNSServerIP=
iSNSServerPort=3205
iSNSAccessControl=Off
I'm going to recompile it
Thanks a lot!
On 11/07/13 07:45, Dan Mick wrote:
On 07/10/2013 04:12 AM, Toni F. [ackstorm] wrote:
Hi all,
I have installed the v0.37 of tgt.
To test this feature i follow the
http://ceph.com/dev-notes/adding-support-for-rbd-to-stgt/
guide
When i launch the command:
tgtadm --lld iscsi --mode logicalunit --op new
--tid 1 --lun 0
--backing-store iscsi-image --bstype rbd
fails
First i think that lun cannot be 0 because lun 0
is used by the
controller (previous command)
This worked when I first wrote the backend, but tgt
may have changed; I'll investigate and change the
blog entry if so. Thanks.
If i launch the correct command with lun 1 i have
this error:
tgtadm: invalid request
In syslog:
Jul 10 12:54:03 datastore-lnx001 tgtd:
device_mgmt(245) sz:28
params:path=iscsi-image,bstype=rbd
Jul 10 12:54:03 datastore-lnx001 tgtd:
tgt_device_create(532) failed to
find bstype, rbd
What's wrong? not supported?
Where did you get your tgtd? Was it built with rbd
support (CEPH_RBD defined
in the environment for make)?
sudo ./tgtadm --lld iscsi --op show --mode system
should tell you.
How did you set up access to ceph.conf?
--
Toni Fuentes Rico
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Administración de Sistemas
Oficina central: 902 888 345
ACK STORM, S.L.
ISO 9001:2008 (Cert.nº. 536932)
http://ackstorm.es
Este mensaje electrónico contiene información de ACK STORM, S.L. que es privada
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cualquier divulgación, copia, distribución o uso de los contenidos está
prohibida. Si usted ha recibido este mensaje por error, por favor borre su
contenido y comuníquenoslo en la direcciónackst...@ackstorm.es
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--
Toni Fuentes Rico
toni.fuen...@ackstorm.es
Administración de Sistemas
Oficina central: 902 888 345
ACK STORM, S.L.
ISO 9001:2008 (Cert.nº. 536932)
http://ackstorm.es
Este mensaje electrónico contiene información de ACK STORM, S.L. que es privada
y confidencial, siendo para el uso exclusivo de la persona(s) o entidades
arriba mencionadas. Si usted no es el destinatario señalado, le informamos que
cualquier divulgación, copia, distribución o uso de los contenidos está
prohibida. Si usted ha recibido este mensaje por error, por favor borre su
contenido y comuníquenoslo en la dirección ackst...@ackstorm.es
PERFORMANCE
RBD Device /dev/rbd/rbd/iscsi-image-part1 exported with tgt
seq-write-1: (g=0): rw=write, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
fio 1.59
Starting 1 process
seq-write-1: Laying out IO file(s) (1 file(s) / 10240MB)
Jobs: 1 (f=1): [W] [100.0% done] [0K/210.7M /s] [0 /52.7K iops] [eta 00m:00s]
seq-write-1: (groupid=0, jobs=1): err= 0: pid=12600
write: io=10240MB, bw=258334KB/s, iops=64583 , runt= 40590msec
clat (usec): min=4 , max=185785 , avg=14.34, stdev=285.90
lat (usec): min=4 , max=185785 , avg=14.60, stdev=285.95
bw (KB/s) : min=140000, max=680912, per=100.51%, avg=259650.01,
stdev=137146.60
cpu : usr=10.13%, sys=40.54%, ctx=6729, majf=1, minf=25
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued r/w/d: total=0/2621440/0, short=0/0/0
lat (usec): 10=90.82%, 20=8.15%, 50=0.81%, 100=0.07%, 250=0.03%
lat (usec): 500=0.01%, 750=0.01%, 1000=0.01%
lat (msec): 2=0.01%, 4=0.01%, 10=0.07%, 20=0.02%, 50=0.01%
lat (msec): 250=0.01%
Run status group 0 (all jobs):
WRITE: io=10240MB, aggrb=258333KB/s, minb=264533KB/s, maxb=264533KB/s,
mint=40590msec, maxt=40590msec
Disk stats (read/write):
sdk: ios=0/17848, merge=0/159, ticks=0/5393060, in_queue=5461852, util=94.16%
TGT-RBD connector
seq-write-1: (g=0): rw=write, bs=4K-4K/4K-4K, ioengine=sync, iodepth=1
fio 1.59
Starting 1 process
seq-write-1: Laying out IO file(s) (1 file(s) / 10240MB)
Jobs: 1 (f=1): [W] [100.0% done] [0K/132.7M /s] [0 /33.2K iops] [eta 00m:00s]
seq-write-1: (groupid=0, jobs=1): err= 0: pid=13158
write: io=10240MB, bw=198316KB/s, iops=49578 , runt= 52874msec
clat (usec): min=4 , max=593897 , avg=19.11, stdev=964.17
lat (usec): min=4 , max=593898 , avg=19.35, stdev=964.17
bw (KB/s) : min= 19, max=662384, per=102.35%, avg=202980.17,
stdev=138701.97
cpu : usr=7.31%, sys=29.81%, ctx=3997, majf=0, minf=25
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued r/w/d: total=0/2621440/0, short=0/0/0
lat (usec): 10=93.87%, 20=5.18%, 50=0.76%, 100=0.07%, 250=0.03%
lat (usec): 500=0.01%, 750=0.01%, 1000=0.01%
lat (msec): 2=0.01%, 4=0.01%, 10=0.01%, 20=0.03%, 50=0.03%
lat (msec): 100=0.01%, 500=0.01%, 750=0.01%
Run status group 0 (all jobs):
WRITE: io=10240MB, aggrb=198315KB/s, minb=203075KB/s, maxb=203075KB/s,
mint=52874msec, maxt=52874msec
Disk stats (read/write):
sdk: ios=0/15935, merge=0/182, ticks=0/6846740, in_queue=6881512, util=95.43%
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