Thanks for your inputs Edward and Pete. I'll set sysctl net.ipv4.tcp_tw_reuse.
On Fri, Jul 11, 2014 at 8:05 AM, Pete Zaitcev <zait...@redhat.com> wrote: > On Tue, 8 Jul 2014 16:26:10 -0700 > Shrinand Javadekar <shrin...@maginatics.com> wrote: > >> I see that these servers do not use a persistent http connection >> between them. So every blob get/put/delete request will create a new >> connection, use it and tear it down. In a highly concurrent >> environment with thousands of such operations happening per second, >> there could be two problems: > > It's a well-known problem in Swift. Operators with proxies driving > sufficient traffic for it to manifest set sysctl net.ipv4.tcp_tw_reuse. > > There were attempts to reuse connections, but they floundered upon > the complexities of actually implementing a connection cache. > Keep in mind that you still have to allow simultaneous connections > to the same node for concurrency. It snowballs quickly. > > -- Pete _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
