3 Jan
2018
3 Jan
'18
12:43 p.m.
Branch: refs/heads/scale
Home: https://github.com/kronosnet/kronosnet
Commit: af84b6a87494a1f2067e89a0e298981e740fa3e0
https://github.com/kronosnet/kronosnet/commit/af84b6a87494a1f2067e89a0e2989…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/links.c
Log Message:
-----------
[stats] report correct MTU for loopback links
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Commit: d0014fe1827589cca815bb9a38a3dd84f0243a52
https://github.com/kronosnet/kronosnet/commit/d0014fe1827589cca815bb9a38a3d…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/handle.c
M libknet/internals.h
M libknet/threads_pmtud.c
M libknet/transport_udp.c
Log Message:
-----------
[PMTUd] Use kernel MTU information to determine next packet size during discovery
Using this information we can, for good links (*), determine and verify the link
MTU with 2 packets.
* good links means:
node X has MTU Y configured on a given interface. Any network object between node X
and destination is capable of handling MTU >= Y.
In no case the kernel will allow us to send packets > Y.
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Commit: 25f58ef99800143145e2144ba325b9c8aeba2bbd
https://github.com/kronosnet/kronosnet/commit/25f58ef99800143145e2144ba325b…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/links.c
Log Message:
-----------
[PTMUd] by using a safe PMTU to init a link, we can shave down corosync membership
creation by 25%
tested on a 9 node cluster with 2 links each node, going down from 4 seconds to 3 seconds
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Commit: e679629f2fbb9cac4a8b953bee0e603ff2163de2
https://github.com/kronosnet/kronosnet/commit/e679629f2fbb9cac4a8b953bee0e6…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/internals.h
M libknet/threads_common.c
M libknet/threads_pmtud.c
Log Message:
-----------
[PMTUd] rename pmtud_running to pmtud_waiting
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Commit: ec57f2c5ba10950c837dcffff2c15f097911c973
https://github.com/kronosnet/kronosnet/commit/ec57f2c5ba10950c837dcffff2c15…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/internals.h
M libknet/tests/knet_bench.c
M libknet/threads_pmtud.c
M libknet/transport_udp.c
Log Message:
-----------
[PTMUd] if any threads receives a EMSGSIZE outside of a PMTUD run, force PTMUd to run
Scenario:
node X has MTU Y on the interface and application is sending packets with size >= Y.
The interface MTU is suddenly reduced to < Y
Before this change, the kernel would be dropping packets till the next PMTUd run.
After this change, the PMTUd will be informed that it has to rerun (overriding
the pmtud_interval), reducing the packet drop to a minimum.
How to test:
force knet_bench to send 1500 size packets with ping_data (requires code change)
and start it.
reduce MTU on the interface from 1500 to 1300 (for example)
Notice an immediate trigger of PMTUd run in debug mode
Note: going up, from 1300 to 1500 will wait for the next PMTUd re-run as there
is no immediate way to detect this change unless we start listening to kernel
netlink sockets with libnl3 (investigation in progress but not critical enough atm).
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Commit: 5b89b3173c0ce3157c5d38e9e1ace92bdc504bf9
https://github.com/kronosnet/kronosnet/commit/5b89b3173c0ce3157c5d38e9e1ace…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/transport_udp.c
Log Message:
-----------
[PMTUd] make PMTUd force_run notification more quiet
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Commit: 063dcdf74daa1bc4525a2b1ac86cc37b0514404b
https://github.com/kronosnet/kronosnet/commit/063dcdf74daa1bc4525a2b1ac86cc…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/threads_common.c
Log Message:
-----------
[PMTUd] if PMTUd is rescheduled, then enforce a new run
the usleep between each PMTUd run will give time to the other threads to grab the wrlock
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Commit: 28b4140b2395af863a16a75fb7d551c3feabbf31
https://github.com/kronosnet/kronosnet/commit/28b4140b2395af863a16a75fb7d55…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/threads_pmtud.c
Log Message:
-----------
[PMTUd] generate warning when there is a timeout receiving a response
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Commit: e51aad809d896b46ee6850e24055eb993c25383c
https://github.com/kronosnet/kronosnet/commit/e51aad809d896b46ee6850e24055e…
Author: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Date: 2018-01-03 (Wed, 03 Jan 2018)
Changed paths:
M libknet/threads_pmtud.c
Log Message:
-----------
[PMTUd] amend warning message
Signed-off-by: Fabio M. Di Nitto <fdinitto(a)redhat.com>
Compare: https://github.com/kronosnet/kronosnet/compare/e1e86bf65213...e51aad809d89