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| author | Eric Dumazet <edumazet@google.com> | 2021-09-29 18:03:33 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-09-30 14:17:10 +0100 |
| commit | acbd0c8144138b6e652240bba248910d330d71bf (patch) | |
| tree | c8834059bb0c4d98bf6446de0c7d2b8b59d377f6 /drivers/net/ethernet/intel/ice/ice_lib.c | |
| parent | 59f09ae8fac4a990070fc6bdc889d0e0118664ea (diff) | |
| download | linux-acbd0c8144138b6e652240bba248910d330d71bf.tar.gz linux-acbd0c8144138b6e652240bba248910d330d71bf.tar.bz2 linux-acbd0c8144138b6e652240bba248910d330d71bf.zip | |
mptcp: use batch snmp operations in mptcp_seq_show()
Using snmp_get_cpu_field_batch() allows for better cpu cache
utilization, especially on hosts with large number of cpus.
Also remove special handling when mptcp mibs where not yet
allocated.
I chose to use temporary storage on the stack to keep this patch simple.
We might in the future use the storage allocated in netstat_seq_show().
Combined with prior patch (inlining snmp_get_cpu_field)
time to fetch and output mptcp counters on a 256 cpu host [1]
goes from 75 usec to 16 usec.
[1] L1 cache size is 32KB, it is not big enough to hold all dataset.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_lib.c')
0 files changed, 0 insertions, 0 deletions