It didn't get caught in any filters this time. I see all the patches, although maybe I was CCed.
On Mon, Feb 25, 2019 at 11:08:40AM -0800, Han Zhou wrote: > This seems not showing up in the mailing list. Retry sending using > different words in title. > On Mon, Feb 25, 2019 at 9:25 AM Han Zhou <[email protected]> wrote: > > > > In scalability test with ovn-scale-test, ovsdb-server SB load is not a > > problem at least with 1k HVs. However, if we restart the ovsdb-server, > > depending on the number of HVs and scale of logical objects, e.g. the > > number of logical ports, ovsdb-server of SB become an obvious bottleneck. > > > > In our test with 1k HVs and 20k logical ports (200 lport * 100 lswitches > > connected by one single logical router). Restarting ovsdb-server of SB > > resulted in 100% CPU of ovsdb-server for more than 1 hour. All HVs (and > > northd) are reconnecting and resyncing the big amount of data at the same > > time. > > > > Similar problem would happen in failover scenario. With active-active > > cluster, the problem can be aleviated slightly, because only 1/3 (assuming > > it is 3-node cluster) of the HVs will need to resync data from new servers, > > but it is still a serious problem. > > > > For detailed discussions for the problem and solutions, see: > > https://mail.openvswitch.org/pipermail/ovs-discuss/2018-October/047591.html > > > > The patches implements the proposal in that discussion. It introduces > > a new method monitor_cond_since to enable client to request changes that > > happened after a specific point so that the data has been cached already > > in client are not re-transfered. Scalability test shows dramatic > > improvement. > > All HVs finishes sync as soon as they reconnect since there is no new data > > to be transfered. > > > > The current patches supports all 3 modes of ovsdb-server, but only clustered > > mode can benefit from it, since it is the only one that supports transaction > > id out of the box. > > > > --- > > v1 -> v2: fix the unused variable in patch 6/7 reported by 0-day. > > v2 -> v3: first 2 in the 7 were merged. Revised 1/5 addressing Ben's > > comment on the json cache hmap. > > > > Han Zhou (5): > > ovsdb-monitor: Refactor ovsdb monitor implementation. > > ovsdb-server: Transaction history tracking. > > ovsdb-monitor: Support monitor_cond_since. > > ovsdb-idl.c: Support monitor_cond_since method in C IDL. > > ovsdb-idl.c: Fast resync from server when connection reset. > > > > Documentation/ref/ovsdb-server.7.rst | 78 +++++- > > lib/ovsdb-idl.c | 229 ++++++++++++---- > > ovsdb/jsonrpc-server.c | 101 +++++-- > > ovsdb/monitor.c | 516 > > ++++++++++++++++++++++------------- > > ovsdb/monitor.h | 16 +- > > ovsdb/ovsdb-client.1.in | 28 +- > > ovsdb/ovsdb-client.c | 104 ++++++- > > ovsdb/ovsdb-server.c | 11 + > > ovsdb/ovsdb.c | 3 + > > ovsdb/ovsdb.h | 10 + > > ovsdb/transaction.c | 117 +++++++- > > ovsdb/transaction.h | 4 + > > tests/ovsdb-monitor.at | 301 +++++++++++++++++++- > > 13 files changed, 1232 insertions(+), 286 deletions(-) > > > > -- > > 2.1.0 > > > _______________________________________________ > dev mailing list > [email protected] > https://mail.openvswitch.org/mailman/listinfo/ovs-dev _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
