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
