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Date: Thu, 21 Jan 2016 00:34:16 +0200 From: Or Gerlitz <gerlitz.or@...il.com> To: Jesper Dangaard Brouer <brouer@...hat.com> Cc: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, Or Gerlitz <ogerlitz@...lanox.com> Subject: Re: Tools for sampling ethtool --statistics On Wed, Jan 20, 2016 at 11:13 AM, Jesper Dangaard Brouer <brouer@...hat.com> wrote: > Hi All, > > I wrote a small tool[1] to extract ethtool --statistics|-S, sample and > present it in a more human readable manor. You might also find this > useful... > > https://github.com/netoptimizer/network-testing/blob/master/bin/ethtool_stats.pl > > The reason I wrote this script is that the mlx5 driver (Mellanox 100 Gbit/s) > does not report correct ifconfig stats. It reports the HW counters, > not what the network stack is able to handle. I/we obviously need the > stack number when working on improving the stack. correct && we should be fixing that ... still it's worthwhile to be able and see per ring stats, specially when you're dealing/optimizing in multi-stream env. > Output examples: > > pktgen (1 core) sending ~20Mpps > > Show adapter mlx5p2 statistics (ONLY that changed!) > Ethtool(mlx5p2) stat: 19431694 ( 19,431,694) <= frames_rx /sec > Ethtool(mlx5p2) stat: 1243722215 ( 1,243,722,215) <= in_octets /sec > Ethtool(mlx5p2) stat: 19433161 ( 19,433,161) <= in_ucast_pkts /sec > Ethtool(mlx5p2) stat: 1243746943 ( 1,243,746,943) <= octets /sec > Ethtool(mlx5p2) stat: 1243629263 ( 1,243,629,263) <= octets_received /sec > Ethtool(mlx5p2) stat: 19433654 ( 19,433,654) <= p64octets /sec > Ethtool(mlx5p2) stat: 19433556 ( 19,433,556) <= pkts /sec > Ethtool(mlx5p2) stat: 1815546 ( 1,815,546) <= rx3_packets /sec > Ethtool(mlx5p2) stat: 1165854821 ( 1,165,854,821) <= rx_bytes /sec > Ethtool(mlx5p2) stat: 19430906 ( 19,430,906) <= rx_csum_good /sec > Ethtool(mlx5p2) stat: 19430906 ( 19,430,906) <= rx_packets /sec > Ethtool(mlx5p2) stat: 1165854821 ( 1,165,854,821) <= rx_unicast_bytes /sec > Ethtool(mlx5p2) stat: 19430906 ( 19,430,906) <= rx_unicast_packets /sec was expecting to see tx_XXX stats, something wrong here? > pktgen (4 cores) sending ~50Mpps [...] The 20M for single ring/core and 50M pps for four streams are really cool results. Do the scripts to get ~such results exist in your network testing github repo? last time I looked I wasn't sure if the multi-stream case is supported. Could you post the two commands you used for these results along with minimal spec of the system (CPU type/freq, special .config directives, anything else)? Or. > Show adapter mlx5p2 statistics (ONLY that changed!) > Ethtool(mlx5p2) stat: 25710443 ( 25,710,443) <= drop_events /sec > Ethtool(mlx5p2) stat: 51861645 ( 51,861,645) <= frames_rx /sec > Ethtool(mlx5p2) stat: 25710502 ( 25,710,502) <= in_discards /sec > Ethtool(mlx5p2) stat: 3319134161 ( 3,319,134,161) <= in_octets /sec > Ethtool(mlx5p2) stat: 26150970 ( 26,150,970) <= in_ucast_pkts /sec > Ethtool(mlx5p2) stat: 3319128053 ( 3,319,128,053) <= octets /sec > Ethtool(mlx5p2) stat: 3319145319 ( 3,319,145,319) <= octets_received /sec > Ethtool(mlx5p2) stat: 51861369 ( 51,861,369) <= p64octets /sec > Ethtool(mlx5p2) stat: 51861375 ( 51,861,375) <= pkts /sec > Ethtool(mlx5p2) stat: 1383475 ( 1,383,475) <= rx3_packets /sec > Ethtool(mlx5p2) stat: 1569059171 ( 1,569,059,171) <= rx_bytes /sec > Ethtool(mlx5p2) stat: 26150988 ( 26,150,988) <= rx_csum_good /sec > Ethtool(mlx5p2) stat: 26150988 ( 26,150,988) <= rx_packets /sec > Ethtool(mlx5p2) stat: 1569059171 ( 1,569,059,171) <= rx_unicast_bytes /sec > Ethtool(mlx5p2) stat: 26150988 ( 26,150,988) <= rx_unicast_packets /sec
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