On Fri, Apr 3, 2015 at 3:23 AM, <[email protected]> wrote: > Are you using SSL (https)?
Nope. SSL is disabled. > > > On Thu, 2 Apr 2015, Shrinand Javadekar wrote: > >> Top shows the CPUs pegged at ~100%. Writes are done by a tool built >> in-house which is similar in functionality to other object store >> benchmarking tools. As I mentioned, there are 256 parallel object >> writes (PUTS), each of 256K bytes. >> >> On Thu, Apr 2, 2015 at 9:21 PM, Yogesh Girikumar <[email protected]> >> wrote: >>> >>> Also how are you doing the object writes to benchmark it? Are you using >>> dd? >>> >>> On 3 April 2015 at 09:50, Yogesh Girikumar <[email protected]> wrote: >>>> >>>> >>>> What does top say? >>>> >>>> On 3 April 2015 at 02:34, Shrinand Javadekar <[email protected]> >>>> wrote: >>>>> >>>>> >>>>> Hi, >>>>> >>>>> I have a single node Swift instance. It has 16 cpus, 8 disks and 64GB >>>>> memory. As part of testing, I am doing 256 object writes in parallel >>>>> for ~10 mins. Each object is also 256K bytes in size. >>>>> >>>>> While my experiment is running, I see that the CPU utilization of the >>>>> box is always ~100%. I am trying to understand what is causing this >>>>> high CPU utilization. Some of this could be attributed to: >>>>> >>>>> 1. MD5 checksum calculation done to verify every PUT. >>>>> 2. MD5 checksum calculation by the auditor (if it runs during this >>>>> interval). >>>>> 3. Hash calculation of the path to decide which partition the object >>>>> goes >>>>> to. >>>>> >>>>> Are there any other CPU intensive operations happening on the system >>>>> that I should be aware of? >>>>> >>>>> I see that the proxy-server has a "PUT" queue. Is there some >>>>> processing of the data in this queue? Would simply putting data in and >>>>> out of the queue, streaming the data between the proxy and object >>>>> server use considerable CPU? >>>>> >>>>> Thanks in advance. >>>>> -Shri >>>>> >>>>> _______________________________________________ >>>>> Mailing list: >>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>>> Post to : [email protected] >>>>> Unsubscribe : >>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >>>> >>>> >>>> >>> >> >> _______________________________________________ >> Mailing list: >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> Post to : [email protected] >> Unsubscribe : >> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >> > _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : [email protected] Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
