Fwd: When i redirected to more traffic to squid box for testing goal via web-polygraph . find error info "OS probably ran out of ephemeral ports at 192.168.2.1:0"

[Pavel Kazlenka]

Hi,

Some of modern OS (including Linux) handle ephemeral ports not efficient 
enough. Can you try to launch your polygraph-client with option '--ports 
2000:65000' to allow polygraph himself handle the ports used for opening 
connections? I believe this will solve your issue.

Best wishes,
Pavel.

On 11/07/2014 04:49 PM, johnzeng wrote:
>
> Hello :
>
> i meet a problem , When i redirected to more traffic to squid box for
> testing goal via web-polygraph .
>
> squidbox ip is 192.168.2.2 web-polygraph_box ip is 192.168.2.3
>
> /polygraph-client --config
> /accerater/testtool/share/polygraph/workloads/simple.pg --proxy
> 192.168.2.2:80 --verb_lvl 10
>
> ./polygraph-server --config
> /accerater/testtool/share/polygraph/workloads/simple.pg --verb_lvl 10
>
> When testing traffic is 1500request/sec , i found more error info ,
>
> but my os setting is net.ipv4.ip_local_port_range = 1024 65535
> open files (-n) 65536
> max user processes (-u) 10000
> /proc/sys/fs/file-max 6815744
>
>
> and i found these error info still , how will i do ? if possible , give
> me some help or advisement please .
>
> ******************************
> error info
> ******************************
>
> EphPortMgr.cc:23: error: 34920/69877 (s98) Address already in use
> 005.28| OS probably ran out of ephemeral ports at 192.168.2.3:0
> 005.28| Client.cc:347: error: 34920/69878 (c63) failed to establish a
> connection
> 005.28| 192.168.2.3 failed to connect to 192.168.2.2:80
> 005.31| i-dflt 104811 0.00 -1 -1.00 3904 32336
> 005.59| PolyApp.cc:189: error: 39/75599 (c58) internal timers may be
> getting beh
>
> 005.90| EphPortMgr.cc:23: error: 64/129 (s98) Address already in use
> 005.90| OS probably ran out of ephemeral ports at 192.168.2.1:0
> 005.90| Client.cc:347: error: 64/130 (c63) failed to establish a connection
> 005.90| 192.168.2.1 failed to connect to 192.168.2.2:80
> 005.90| PolyApp.cc:189: error: 4/180 (c58) internal timers may be
> getting behind
> 005.90| record level of timing drift: 179msec; last check was 3msec ago
> 005.90| EphPortMgr.cc:23: error: 128/260 (s98) Address already in use
> 005.90| OS probably ran out of ephemeral ports at 192.168.2.1:0
> 005.90| Client.cc:347: error: 128/261 (c63) failed to establish a connection
> 005.90| 192.168.2.1 failed to connect to 192.168.2.2:80
> 005.91| PolyApp.cc:189: error: 8/460 (c58) internal timers may be
> getting behind
> 005.91| record level of timing drift: 383msec; last check was 3msec ago
>
>
>
>
>
>
>
>
>
> ***********************************
> Web-polygraph configration on web-polygraph box
> ***********************************
>
>
> Content SimpleContent = {
> size = exp(13KB); // response sizes distributed exponentially
> cachable = 80%; // 20% of content is uncachable
> };
>
> // a primitive server cleverly labeled "S101"
> // normally, you would specify more properties,
> // but we will mostly rely on defaults for now
> Server S = {
> kind = "S101";
> contents = [ SimpleContent ];
> direct_access = contents;
>
> addresses = ['192.168.2.1:9090']; // where to create these server agents
> };
>
> // a primitive robot
> Robot R = {
> kind = "R101";
> pop_model = { pop_distr = popUnif(); };
> recurrence = 55% / SimpleContent.cachable; // adjusted to get 55% DHR
> req_rate = 1600/sec;
>
>
> origins = S.addresses; // where the origin servers are
> addresses = ['192.168.2.1']; // where these robot agents will be created
> };
>
>
>
>
> **************************************
> sysctl.conf on web-polygraph box
> **************************************
>
>
> fs.file-max = 6815744
> fs.aio-max-nr = 1048576
> kernel.shmmax = 4294967295
> kernel.threads-max = 212992
> kernel.sem = 250 256000 100 1024
> net.core.rmem_max=5165824
> net.core.wmem_max=262144
> net.ipv4.tcp_rmem=5165824 5165824 5165824
> net.ipv4.tcp_wmem=262144 262144 262144
> net.core.rmem_default = 5165824
> net.core.wmem_default = 262144
> net.core.optmem_max = 25165824
> net.ipv4.ip_local_port_range = 1024 65535
> net.nf_conntrack_max = 6553600
> net.netfilter.nf_conntrack_tcp_timeout_established = 1200
>
>
> net.ipv4.tcp_tw_recycle = 1
> net.ipv4.tcp_tw_reuse = 1
> net.ipv4.tcp_fin_timeout = 10
> net.ipv4.tcp_orphan_retries = 3
> net.ipv4.tcp_retries2 = 5
> net.ipv4.tcp_keepalive_intvl = 15
> net.ipv4.tcp_syn_retries = 5
> net.ipv4.tcp_synack_retries = 2
> net.ipv4.tcp_keepalive_time = 1800
> net.core.netdev_max_backlog = 3000000
> net.ipv4.tcp_max_syn_backlog = 262144000
> net.ipv4.tcp_max_tw_buckets = 500000000
> net.core.somaxconn = 262144000
> net.ipv4.tcp_sack = 1
> net.ipv4.tcp_fack = 1
>
> net.ipv4.tcp_timestamps = 0
> net.ipv4.tcp_window_scaling = 1
> net.ipv4.tcp_syncookies = 1
> net.ipv4.tcp_no_metrics_save=1
> net.ipv4.tcp_max_orphans = 26214400
> net.ipv4.tcp_synack_retries = 2
> net.ipv4.tcp_low_latency = 1
> net.ipv4.tcp_rfc1337 = 1
>
>
>
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