From: Stefan Priebe <s.priebe-2Lf/h1ldwEHR5kwTpVNS9A@public.gmane.org>
To: "ceph-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<ceph-devel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
ceph-users <ceph-users-idqoXFIVOFJgJs9I8MT0rw@public.gmane.org>
Subject: Why is librbd1 / librados2 from Firefly 20% slower than the one from dumpling?
Date: Fri, 13 Jun 2014 16:59:16 +0200 [thread overview]
Message-ID: <539B11C4.1010400@profihost.ag> (raw)
Hi,
while testint firefly i cam into the sitation where i had a client where
the latest dumpling packages where installed (0.67.9).
As my pool has hashppool false and the tunables are set to default it
can talk to my firefly ceph sotrage.
For random 4k writes using fio with librbd and 32 jobs and an iodepth of 32.
I get these results:
librbd / librados2 from dumpling:
write: io=3020.9MB, bw=103083KB/s, iops=25770, runt= 30008msec
WRITE: io=3020.9MB, aggrb=103082KB/s, minb=103082KB/s,
maxb=103082KB/s, mint=30008msec, maxt=30008msec
librbd / librados2 from firefly:
write: io=7344.3MB, bw=83537KB/s, iops=20884, runt= 90026msec
WRITE: io=7344.3MB, aggrb=83537KB/s, minb=83537KB/s, maxb=83537KB/s,
mint=90026msec, maxt=90026msec
Stefan
next reply other threads:[~2014-06-13 14:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-13 14:59 Stefan Priebe [this message]
[not found] ` <539B11C4.1010400-2Lf/h1ldwEHR5kwTpVNS9A@public.gmane.org>
2014-06-26 0:17 ` Why is librbd1 / librados2 from Firefly 20% slower than the one from dumpling? Gregory Farnum
2014-06-26 2:53 ` [ceph-users] " Christian Balzer
[not found] ` <CAPYLRzjL1JrgsThUejDHQsG3qcK1ZTXgcO2mHEuoHN-FbwVwsQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-06-27 6:49 ` Stefan Priebe - Profihost AG
2014-07-01 22:51 ` [ceph-users] " Gregory Farnum
[not found] ` <CAPYLRzhJ_3WkWSFUAx+w+gt5PTLD7SYmSyQ-xPRZ31ahN4a1Ag-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-02 13:01 ` Stefan Priebe - Profihost AG
[not found] ` <53B40292.2000108-2Lf/h1ldwEHR5kwTpVNS9A@public.gmane.org>
2014-07-02 13:07 ` Haomai Wang
[not found] ` <CACJqLyZYpEJYUn5m5B4LCGGfszY_xPjui5q7HShQuotBkVDt4Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-02 13:12 ` Stefan Priebe - Profihost AG
2014-07-02 14:00 ` [ceph-users] " Gregory Farnum
[not found] ` <CAPYLRziFqZYFn4E22oE+-HXXcRppzwY=h2TbDuCErSixzZ=eWQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-02 19:00 ` Stefan Priebe
[not found] ` <53B456E3.1060909-2Lf/h1ldwEHR5kwTpVNS9A@public.gmane.org>
2014-07-02 19:36 ` Gregory Farnum
2014-07-02 19:44 ` [ceph-users] " Stefan Priebe
[not found] ` <53B46106.7050306-2Lf/h1ldwEHR5kwTpVNS9A@public.gmane.org>
2014-07-02 19:46 ` Gregory Farnum
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