sonic-buildimage/device/mellanox/x86_64-mlnx_msn2700-r0/Mellanox-SN2700-D48C8/buffers_defaults_t1.j2
Stephen Sun 54fcdbb380
Support single ingress pool for MSFT SKUs and optimize headroom calculation (#4686)
Calculate pool size in t1 as 24 * downlink port + 8 * uplink port

- Take both port and peer MTU into account when calculating headroom
- Worst case factor is decreased to 50%
- Mellanox-SN2700-C28D8 t0, assume 48 * 50G/5m + 8 * 100G/40m ports
- Mellanox-SN2700 (C32)
  - t0: 16 * 100G/5m + 16 * 100G/40m
  - t1: 16 * 100G/40m + 16 * 100G/300m

Signed-off-by: Stephen Sun <stephens@mellanox.com>

Co-authored-by: Stephen Sun <stephens@mellanox.com>
2020-08-13 13:12:09 +03:00

101 lines
2.9 KiB
Django/Jinja

{% set default_cable = '5m' %}
{% set ingress_lossless_pool_size = '8506368' %}
{% set egress_lossless_pool_size = '13945824' %}
{% set egress_lossy_pool_size = '8506368' %}
{%- macro generate_port_lists(PORT_ALL) %}
{# Generate list of ports #}
{%- for port_idx in range(0, 32) %}
{%- if PORT_ALL.append("Ethernet%d" % (port_idx)) %}{%- endif %}
{%- endfor %}
{%- endmacro %}
{%- macro generate_buffer_pool_and_profiles() %}
"BUFFER_POOL": {
"ingress_lossless_pool": {
"size": "{{ ingress_lossless_pool_size }}",
"type": "ingress",
"mode": "dynamic"
},
"egress_lossless_pool": {
"size": "{{ egress_lossless_pool_size }}",
"type": "egress",
"mode": "dynamic"
},
"egress_lossy_pool": {
"size": "{{ egress_lossy_pool_size }}",
"type": "egress",
"mode": "dynamic"
}
},
"BUFFER_PROFILE": {
"ingress_lossless_profile": {
"pool":"[BUFFER_POOL|ingress_lossless_pool]",
"size":"0",
"dynamic_th":"7"
},
"ingress_lossy_profile": {
"pool":"[BUFFER_POOL|ingress_lossless_pool]",
"size":"0",
"dynamic_th":"3"
},
"egress_lossless_profile": {
"pool":"[BUFFER_POOL|egress_lossless_pool]",
"size":"0",
"dynamic_th":"7"
},
"egress_lossy_profile": {
"pool":"[BUFFER_POOL|egress_lossy_pool]",
"size":"9216",
"dynamic_th":"7"
},
"q_lossy_profile": {
"pool":"[BUFFER_POOL|egress_lossy_pool]",
"size":"0",
"dynamic_th":"3"
}
},
{%- endmacro %}
{%- macro generate_profile_lists(port_names) %}
"BUFFER_PORT_INGRESS_PROFILE_LIST": {
{% for port in port_names.split(',') %}
"{{ port }}": {
"profile_list" : "[BUFFER_PROFILE|ingress_lossless_profile]"
}{% if not loop.last %},{% endif %}
{% endfor %}
},
"BUFFER_PORT_EGRESS_PROFILE_LIST": {
{% for port in port_names.split(',') %}
"{{ port }}": {
"profile_list" : "[BUFFER_PROFILE|egress_lossless_profile],[BUFFER_PROFILE|egress_lossy_profile]"
}{% if not loop.last %},{% endif %}
{% endfor %}
}
{%- endmacro %}
{%- macro generate_queue_buffers(port_names) %}
"BUFFER_QUEUE": {
{% for port in port_names.split(',') %}
"{{ port }}|3-4": {
"profile" : "[BUFFER_PROFILE|egress_lossless_profile]"
},
{% endfor %}
{% for port in port_names.split(',') %}
"{{ port }}|0-2": {
"profile" : "[BUFFER_PROFILE|q_lossy_profile]"
},
{% endfor %}
{% for port in port_names.split(',') %}
"{{ port }}|5-6": {
"profile" : "[BUFFER_PROFILE|q_lossy_profile]"
}{% if not loop.last %},{% endif %}
{% endfor %}
}
{%- endmacro %}