thunderx2-events.txt

L3C events:
============

read_request:
	Number of Read requests received by the L3 Cache.
	This includes Read as well as Read Exclusives.

read_hit:
	Number of Read requests received by the L3 cache that were hit
	in the L3 (Data provided form the L3)

writeback_request:
	Number of Write Backs received by the L3 Cache. These are basically
	the L2 Evicts and writes from the PCIe Write Cache.

evict_request:
	Number of Evicts that the L3 cache generated.

NOTE:
1. Granularity of all these event counter values are cache line length(64 bytes)
2. L3C cache Hit Ratio = (read_hit + inv_nwrite_hit + inv_hit) / (read_request + inv_nwrite_request + inv_request)

DMC events:
============
cnt_cycles:
	Count cycles (Clocks at the DMC clock rate)

write_txns:
	Number of 64 Bytes write transactions received by the DMC(s)

read_txns:
	Number of 64 Bytes Read transactions received by the DMC(s)

data_transfers:
	Number of 64 Bytes data transferred to or from DRAM.


CCPI2 events:
=================
req_pktsent:
	Number of Requests packets that are sent form this node. A Request
	packet can contain one or two requests of any type. Some examples of
	requests types are, Reads, Read Exclusive, Writes and Evicts.

snoop_pktsent:
	Number of Snoops (coherency) packets that are sent from this node. A snoop
	packet can contain one or two snoops.

data_pktsent:
	Number of Data packets that are sent from this node. Data packet can be any
	size, but in general they are 64 bytes.

gic_pktsent:
	Number of Gic(interrupt related) packets that are sent from this node.


Examples:

perf stat -a -e uncore_dmc_0/cnt_cycles/ sleep 1

perf stat -a -e \
uncore_dmc_0/cnt_cycles/,\
uncore_dmc_0/data_transfers/,\
uncore_dmc_0/read_txns/,\
uncore_dmc_0/write_txns/ sleep 1

perf stat -a -e \
uncore_l3c_0/read_request/,\
uncore_l3c_0/read_hit/,\
uncore_l3c_0/inv_request/,\
uncore_l3c_0/inv_hit/ sleep 1