search for: htcp

...: 262144 KB 2012/01/22 00:23:51| Max Swap size: 0 KB 2012/01/22 00:23:51| Using Least Load store dir selection 2012/01/22 00:23:51| Set Current Directory to /var/spool/squid 2012/01/22 00:23:51| Loaded Icons. 2012/01/22 00:23:51| Accepting HTTP connections at [::]:3128, FD 13. 2012/01/22 00:23:51| HTCP Disabled. 2012/01/22 00:23:51| Squid modules loaded: 0 2012/01/22 00:23:51| Adaptation support is off. 2012/01/22 00:23:51| Ready to serve requests. 2012/01/22 00:23:52| storeLateRelease: released 0 objects 2012/01/22 00:23:56| idnsGrokReply: Malformed DNS response 2012/01/22 00:24:01| idnsGrokRepl...

Hi, thanks for all the feedback and topics. May be I can/should draw a better picture of my settings and question. We "still" use samba 3.6.9-167 from Red Hat with an openldap backend. I tried from an older posting somewhere: socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=65536 SO_SNDBUF=65536 But there was no noticeable impact. The log level = 2. Thats all I changed

...= 67108864 net.core.wmem_max = 67108864 # increase Linux autotuning TCP buffer limit net.ipv4.tcp_rmem = 4096 87380 67108864 net.ipv4.tcp_wmem = 4096 65536 67108864 # increase the length of the processor input queue net.core.netdev_max_backlog = 250000 # recommended default congestion control is htcp net.ipv4.tcp_congestion_control=htcp # recommended for hosts with jumbo frames enabled net.ipv4.tcp_mtu_probing=1 Thomas W. Sr. Systems Administrator COLA/IGES twake at cola.iges.org Affiliate Computer Scientist GMU -------------- next part -------------- An HTML attachment was scrubbed......

We have found a critical problem with the XEN 3.1 release (for those who are running 15-20 VMs on a single server). We are using the official XEN 3.1 release on a rackable server (Dual-Core AMD Opteron, 8GB RAM). The problem we are seeing is that intermittently vifs fail to work properly in VMs after we create around 15-17 VMs on our server (all running at the same time, created one by