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swift download extremely slow

Hi experts

I finished the swift installation following the install guide(http://docs.openstack.org/project-install-guide/object-storage/draft/get_started.html), file upload is very fast, but file download is extremely slow, why ?

[root@controller admin]# time openstack object create container1 cirros-0.3.4-x86_64-disk.img +------------------------------+------------+----------------------------------+ | object | container | etag | +------------------------------+------------+----------------------------------+ | cirros-0.3.4-x86_64-disk.img | container1 | ee1eca47dc88f4879d8a229cc70a07c6 | +------------------------------+------------+----------------------------------+

real 0m3.807s user 0m2.127s sys 0m0.161s

[root@controller /]# time openstack object save container1 cirros-0.3.4-x86_64-disk.img real 5m51.489s user 5m48.172s sys 0m2.094s