[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] help with horrible network failures
Ian Pratt wrote: Rob Gardner wrote:I've got two machines running identical versions of xen & linux. One of them constantly has problems under high network loads (70-100% httperf loads). This is using xen-unstable checked out on or about Feb 13. Any clues? See below for details. One machine exhibits the bug, the other doesn't? How similar is the h/w? The machine with the problem: Intel e100 nic 1.7 Ghz Xeon The machine that does not exhibit the problem: Tigon3 nic 2.6Ghz P4 Can you reproduce with a single high-rate TCP stream? No. The problem seems to stem from the creation or use of lots of multiple streams. > Can you reproduce with an older version of Xen? We have not seen this problem before using countless older versions of xen. Do you have any of the iptables/netfilter connection tracking stuff in your kernel? We're using vanilla xen-unstable, haven't changed any parameters at all: # # IP: Virtual Server Configuration # # CONFIG_IP_VS is not set # CONFIG_IPV6 is not set CONFIG_NETFILTER=y # CONFIG_NETFILTER_DEBUG is not set CONFIG_BRIDGE_NETFILTER=y # # IP: Netfilter Configuration # CONFIG_IP_NF_CONNTRACK=m CONFIG_IP_NF_CT_ACCT=y # CONFIG_IP_NF_CONNTRACK_MARK is not set # CONFIG_IP_NF_CT_PROTO_SCTP is not set CONFIG_IP_NF_FTP=m # CONFIG_IP_NF_IRC is not set # CONFIG_IP_NF_TFTP is not set # CONFIG_IP_NF_AMANDA is not set # CONFIG_IP_NF_QUEUE is not set CONFIG_IP_NF_IPTABLES=m # CONFIG_IP_NF_MATCH_LIMIT is not set CONFIG_IP_NF_MATCH_IPRANGE=m # CONFIG_IP_NF_MATCH_MAC is not set # CONFIG_IP_NF_MATCH_PKTTYPE is not set # CONFIG_IP_NF_MATCH_MARK is not set # CONFIG_IP_NF_MATCH_MULTIPORT is not set # CONFIG_IP_NF_MATCH_TOS is not set # CONFIG_IP_NF_MATCH_RECENT is not set # CONFIG_IP_NF_MATCH_ECN is not set # CONFIG_IP_NF_MATCH_DSCP is not set # CONFIG_IP_NF_MATCH_AH_ESP is not set # CONFIG_IP_NF_MATCH_LENGTH is not set # CONFIG_IP_NF_MATCH_TTL is not set # CONFIG_IP_NF_MATCH_TCPMSS is not set # CONFIG_IP_NF_MATCH_HELPER is not set # CONFIG_IP_NF_MATCH_STATE is not set # CONFIG_IP_NF_MATCH_CONNTRACK is not set # CONFIG_IP_NF_MATCH_OWNER is not set # CONFIG_IP_NF_MATCH_PHYSDEV is not set # CONFIG_IP_NF_MATCH_ADDRTYPE is not set # CONFIG_IP_NF_MATCH_REALM is not set # CONFIG_IP_NF_MATCH_SCTP is not set # CONFIG_IP_NF_MATCH_COMMENT is not set # CONFIG_IP_NF_MATCH_HASHLIMIT is not set CONFIG_IP_NF_FILTER=m CONFIG_IP_NF_TARGET_REJECT=m # CONFIG_IP_NF_TARGET_LOG is not set # CONFIG_IP_NF_TARGET_ULOG is not set # CONFIG_IP_NF_TARGET_TCPMSS is not set CONFIG_IP_NF_NAT=m CONFIG_IP_NF_NAT_NEEDED=y CONFIG_IP_NF_TARGET_MASQUERADE=m # CONFIG_IP_NF_TARGET_REDIRECT is not set # CONFIG_IP_NF_TARGET_NETMAP is not set # CONFIG_IP_NF_TARGET_SAME is not set # CONFIG_IP_NF_NAT_LOCAL is not set # CONFIG_IP_NF_NAT_SNMP_BASIC is not set CONFIG_IP_NF_NAT_FTP=m # CONFIG_IP_NF_MANGLE is not set # CONFIG_IP_NF_RAW is not set # CONFIG_IP_NF_ARPTABLES is not set # CONFIG_IP_NF_COMPAT_IPCHAINS is not set # CONFIG_IP_NF_COMPAT_IPFWADM is not set # # Bridge: Netfilter Configuration # # CONFIG_BRIDGE_NF_EBTABLES is not set ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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