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| author | Eric Dumazet <edumazet@google.com> | 2015-11-18 06:30:55 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-11-18 16:17:39 -0500 |
| commit | 7ae92ae588c9f78006c106bb3398d50274c5d7de (patch) | |
| tree | bb445f0a8db96ea58ab7560357ca9c13a09972b8 /drivers/misc/qcom-coincell.c | |
| parent | ce6aea93f7510437dde625b77a7a2f4d20b72660 (diff) | |
| download | linux-7ae92ae588c9f78006c106bb3398d50274c5d7de.tar.bz2 | |
mlx5: add busy polling support
It is now easy to add busy polling support to a NAPI driver,
with very little impact on normal input path.
This patch serves as a reference implementation.
Note:
A followup patch will add proper napi_complete_done() in mlx5,
so that LINUX_MIB_BUSYPOLLRXPACKETS snmp counter is properly handled.
Tested:
Normal TCP_RR results without busy polling :
lpk51:~# echo 0 >/proc/sys/net/core/busy_read
lpk52:~# echo 0 >/proc/sys/net/core/busy_read
lpk51:~# ./netperf -H 192.168.4.52 -t TCP_RR -l 10
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.4.52 () port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec
16384 87380 1 1 10.00 53509.49
16384 87380
Now enable busy polling :
lpk51:~# echo 70 >/proc/sys/net/core/busy_read
lpk52:~# echo 70 >/proc/sys/net/core/busy_read
lpk51:~# ./netperf -H 192.168.4.52 -t TCP_RR -l 10
MIGRATED TCP REQUEST/RESPONSE TEST from 0.0.0.0 (0.0.0.0) port 0 AF_INET to 192.168.4.52 () port 0 AF_INET : first burst 0
Local /Remote
Socket Size Request Resp. Elapsed Trans.
Send Recv Size Size Time Rate
bytes Bytes bytes bytes secs. per sec
16384 87380 1 1 10.00 97530.92
16384 87380
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/misc/qcom-coincell.c')
0 files changed, 0 insertions, 0 deletions