diff options
| author |   Stephen Hemminger <shemminger@vyatta.com> | 2009-08-27 13:55:15 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-08-28 23:32:09 -0700 |
| commit | 5c9d191c166233e723e632e79bcca2127a5fece9 (patch) | |
| tree | 425324ef55119bb7420b4ab199e0a0821a3f157b /net/core | |
| parent | pktgen: reorganize transmit loop (diff) | |
| download | linux-dev-5c9d191c166233e723e632e79bcca2127a5fece9.tar.xz linux-dev-5c9d191c166233e723e632e79bcca2127a5fece9.zip | |
pktgen: avoid calling gettimeofday
If not using delay then no need to update next_tx after
each packet sent. This allows pktgen to send faster especially
on systems with slower clock sources.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/pktgen.c | 16 |
1 files changed, 9 insertions, 7 deletions
diff --git a/net/core/pktgen.c b/net/core/pktgen.c index bce9bf4b4a62..b7302e18764a 100644 --- a/net/core/pktgen.c +++ b/net/core/pktgen.c @@ -3450,15 +3450,17 @@ static void pktgen_xmit(struct pktgen_dev *pkt_dev) pkt_dev->last_ok = 0; } - pkt_dev->next_tx_us = getCurUs(); - pkt_dev->next_tx_ns = 0; + if (pkt_dev->delay_us || pkt_dev->delay_ns) { + pkt_dev->next_tx_us = getCurUs(); + pkt_dev->next_tx_ns = 0; - pkt_dev->next_tx_us += pkt_dev->delay_us; - pkt_dev->next_tx_ns += pkt_dev->delay_ns; + pkt_dev->next_tx_us += pkt_dev->delay_us; + pkt_dev->next_tx_ns += pkt_dev->delay_ns; - if (pkt_dev->next_tx_ns > 1000) { - pkt_dev->next_tx_us++; - pkt_dev->next_tx_ns -= 1000; + if (pkt_dev->next_tx_ns > 1000) { + pkt_dev->next_tx_us++; + pkt_dev->next_tx_ns -= 1000; + } } } __netif_tx_unlock_bh(txq); |