Comment 5 for bug 1246216

Since todays kernel update (3.13.0-46.76 -> 3.13.0-46.77) I also see this message in my kern.log It has not been there before and I'm just wondering what will happen if this continues as the "too long" value seems to be continiously rising and the sample rate is being lowered

Mar 3 07:14:57 sigma kernel: [ 9.748740] NFSD: starting 90-second grace period (net ffffffff81cdaa00)
Mar 3 07:16:26 sigma kernel: [ 102.269932] ip_tables: (C) 2000-2006 Netfilter Core Team
Mar 3 07:16:26 sigma kernel: [ 102.279642] nf_conntrack version 0.5.0 (16384 buckets, 65536 max)
Mar 3 07:16:26 sigma kernel: [ 102.304003] ip6_tables: (C) 2000-2006 Netfilter Core Team
Mar 3 07:16:50 sigma kernel: [ 126.135981] perf samples too long (2621 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
Mar 3 07:23:11 sigma kernel: [ 507.343615] perf samples too long (5025 > 5000), lowering kernel.perf_event_max_sample_rate to 25000
Mar 3 08:07:24 sigma kernel: [ 3159.511565] perf samples too long (10036 > 10000), lowering kernel.perf_event_max_sample_rate to 12500

Happens on a KVM based Ubuntu 14.04 with 12GB RAM and 4 Cores. Also another problem is that IPv6 is not working any more during bootup after todays kernel update thus nginx can not bind to the IPv6 address given in the configuration and refuses to start up. Kernels should be tested more before releasing these updates...