while investigating T101141: UDP rcvbuferrors and inerrors on graphite hosts it occurred to me that mediawiki should also be batching statsd metrics, ATM it doesn't (strace from statsdlb)
recvfrom(3, "MediaWiki.image_cache.hit:1|c", 16777215, 0, NULL, NULL) = 29 recvfrom(3, "MediaWiki.jobqueue.pickup_delay.all:0|ms", 16777215, 0, NULL, NULL) = 40 recvfrom(3, "MediaWiki.resourceloader_cache.minify_css.hit:1|c", 16777215, 0, NULL, NULL) = 49 recvfrom(3, "varnish.clients.ssl.tlsv1:506|c\nvarnish.clients.ssl_cipher.ecdhe-ecdsa-aes128-sha256:112|c\nvarnish.clients.ssl_cipher.ecdhe-rsa-aes128-sha:38|c\nvarnish.clients.ssl_sessions.negotiated:1696|c\nvarnish.clients.ssl_cipher.ecdhe-ecdsa-aes128-gcm-sha256:1827|c\nv"..., 16777215, 0, NULL, NULL) = 680 recvfrom(3, "MediaWiki.resourceloader_build.user_options:0.10204315185547|ms", 16777215, 0, NULL, NULL) = 63 recvfrom(3, "MediaWiki.CirrusSearch.requestTime:15|ms", 16777215, 0, NULL, NULL) = 40 recvfrom(3, "MediaWiki.resourceloader_cache.minify_css.hit:1|c", 16777215, 0, NULL, NULL) = 49