From: Stephen Hemminger <stephen@networkplumber.org>
To: Ronan Randles <ronan.randles@intel.com>
Cc: dev@dpdk.org, harry.van.haaren@intel.com
Subject: Re: [PATCH 12/12] examples/generator: line rate limiting
Date: Tue, 14 Dec 2021 08:10:11 -0800 [thread overview]
Message-ID: <20211214081011.774b2769@hermes.local> (raw)
In-Reply-To: <20211214141242.3383831-13-ronan.randles@intel.com>
On Tue, 14 Dec 2021 14:12:42 +0000
Ronan Randles <ronan.randles@intel.com> wrote:
> + /* Track time since last token add and calculate number
> + * of tokens to give per second to implement line rate limiting
> + */
> + uint64_t now = rte_rdtsc();
> + uint64_t tsc_delta = now - token_last_add_tsc;
> + float token_scalar = (float)tsc_delta / tsc_hz_f;
> + float add_tokens = args->target_tx_pps * token_scalar;
floating point math is slow, could you do this fixed point with
reciprocal divide?
next prev parent reply other threads:[~2021-12-14 16:10 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-14 14:12 [PATCH 00/12] add packet generator library and example app Ronan Randles
2021-12-14 14:12 ` [PATCH 01/12] net: add string to IPv4 parse function Ronan Randles
2021-12-14 17:31 ` Morten Brørup
2021-12-15 9:27 ` Bruce Richardson
2021-12-15 9:35 ` Morten Brørup
2021-12-15 10:11 ` Bruce Richardson
2022-01-19 14:20 ` Thomas Monjalon
2021-12-14 14:12 ` [PATCH 02/12] net: add function to pretty print IPv4 Ronan Randles
2021-12-14 16:08 ` Stephen Hemminger
2021-12-14 17:42 ` Morten Brørup
2021-12-14 17:31 ` Morten Brørup
2021-12-15 1:06 ` Ananyev, Konstantin
2021-12-15 3:20 ` Stephen Hemminger
2021-12-15 7:23 ` Morten Brørup
2021-12-15 13:06 ` Ananyev, Konstantin
2022-01-19 14:24 ` Thomas Monjalon
2022-01-19 14:41 ` Van Haaren, Harry
2021-12-14 14:12 ` [PATCH 03/12] gen: add files for initial traffic generation library Ronan Randles
2021-12-14 14:12 ` [PATCH 04/12] gen: add basic Rx and Tx routines and tests Ronan Randles
2021-12-14 14:12 ` [PATCH 05/12] gen: add raw packet data API " Ronan Randles
2021-12-15 12:40 ` Jerin Jacob
2021-12-17 11:40 ` Van Haaren, Harry
2021-12-17 16:19 ` Thomas Monjalon
2021-12-20 10:21 ` Van Haaren, Harry
2022-01-19 14:56 ` Thomas Monjalon
2022-01-20 10:21 ` Van Haaren, Harry
2022-01-21 10:45 ` Van Haaren, Harry
2021-12-20 13:21 ` Jerin Jacob
2022-01-21 14:20 ` Xueming(Steven) Li
2021-12-14 14:12 ` [PATCH 06/12] gen: add parsing infrastructure and Ether protocol Ronan Randles
2021-12-14 14:12 ` [PATCH 07/12] gen: add gen IP parsing Ronan Randles
2021-12-14 14:12 ` [PATCH 08/12] examples/generator: import code from basicfwd.c Ronan Randles
2021-12-14 14:12 ` [PATCH 09/12] examples/generator: enable gen library for traffic gen Ronan Randles
2021-12-14 14:12 ` [PATCH 10/12] examples/generator: telemetry support Ronan Randles
2021-12-14 14:12 ` [PATCH 11/12] examples/generator: link status check added Ronan Randles
2021-12-14 14:12 ` [PATCH 12/12] examples/generator: line rate limiting Ronan Randles
2021-12-14 16:10 ` Stephen Hemminger [this message]
2021-12-14 14:57 ` [PATCH 00/12] add packet generator library and example app Bruce Richardson
2021-12-14 15:59 ` Randles, Ronan
2022-01-12 16:18 ` Morten Brørup
2021-12-15 12:31 ` Jerin Jacob
2021-12-15 14:07 ` Bruce Richardson
2022-01-21 10:31 ` [PATCH v2 00/15] " Ronan Randles
2022-01-21 10:31 ` [PATCH v2 01/15] net: add string to IPv4 parse function Ronan Randles
2022-01-21 10:31 ` [PATCH v2 02/15] net: add function to pretty print IPv4 Ronan Randles
2022-01-21 16:20 ` Stephen Hemminger
2022-01-21 10:31 ` [PATCH v2 03/15] gen: add files for initial traffic generation library Ronan Randles
2022-01-21 10:31 ` [PATCH v2 04/15] gen: add basic Rx and Tx routines and tests Ronan Randles
2022-01-21 10:31 ` [PATCH v2 05/15] gen: add raw packet data API " Ronan Randles
2022-01-21 10:31 ` [PATCH v2 06/15] gen: add parsing infrastructure and Ether protocol Ronan Randles
2022-01-21 10:31 ` [PATCH v2 07/15] gen: add gen IP parsing Ronan Randles
2022-01-21 10:31 ` [PATCH v2 08/15] examples/generator: import code from basicfwd.c Ronan Randles
2022-01-21 10:31 ` [PATCH v2 09/15] examples/generator: enable gen library for traffic gen Ronan Randles
2022-01-21 10:31 ` [PATCH v2 10/15] examples/generator: telemetry support Ronan Randles
2022-01-21 10:31 ` [PATCH v2 11/15] examples/generator: link status check added Ronan Randles
2022-01-21 10:31 ` [PATCH v2 12/15] examples/generator: line rate limiting Ronan Randles
2022-01-21 10:31 ` [PATCH v2 13/15] gen: add UDP support Ronan Randles
2022-01-21 10:31 ` [PATCH v2 14/15] net/vxlan: instance flag endianness refactored Ronan Randles
2022-01-21 10:31 ` [PATCH v2 15/15] gen: add VXLAN support Ronan Randles
2022-01-21 14:44 ` [PATCH 00/12] add packet generator library and example app Xueming(Steven) Li
2022-01-21 15:24 ` Van Haaren, Harry
2022-01-24 10:48 ` Ananyev, Konstantin
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