BBlack has uploaded a new change for review. https://gerrit.wikimedia.org/r/295542
Change subject: r::c::perf: disable prequeue timestamps ...................................................................... r::c::perf: disable prequeue timestamps Change-Id: Id6e243c42b1d503febe86ee4dc142796ea758fe9 --- M modules/role/manifests/cache/perf.pp 1 file changed, 6 insertions(+), 0 deletions(-) git pull ssh://gerrit.wikimedia.org:29418/operations/puppet refs/changes/42/295542/1 diff --git a/modules/role/manifests/cache/perf.pp b/modules/role/manifests/cache/perf.pp index 357e12a..29a680b 100644 --- a/modules/role/manifests/cache/perf.pp +++ b/modules/role/manifests/cache/perf.pp @@ -96,6 +96,12 @@ # will see drops in col 2 of /proc/net/softnet_stat 'net.core.netdev_max_backlog' => 60000, + # Default:1 - setting this to zero defers timestamping until after + # RPS. It's more efficient this way, but timestamp doesn't account + # for any tiny delays in queueing before RPS, which I don't think is + # an issue in our case. + 'net.core.netdev_tstamp_prequeue' => 0, + # Our rate of incoming SYN on heaviest cp hosts peaks around # 1-2K/sec. For somaxconn, the SYN numbers should be multiplied # out for a few seconds of headroom (bursts, and userspace delays) -- To view, visit https://gerrit.wikimedia.org/r/295542 To unsubscribe, visit https://gerrit.wikimedia.org/r/settings Gerrit-MessageType: newchange Gerrit-Change-Id: Id6e243c42b1d503febe86ee4dc142796ea758fe9 Gerrit-PatchSet: 1 Gerrit-Project: operations/puppet Gerrit-Branch: production Gerrit-Owner: BBlack <bbl...@wikimedia.org> _______________________________________________ MediaWiki-commits mailing list MediaWiki-commits@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/mediawiki-commits