patches for DPDK stable branches
 help / color / mirror / Atom feed
From: Rakesh Kudurumalla <rkudurumalla@marvell.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: "stable@dpdk.org" <stable@dpdk.org>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"david.marchand@redhat.com" <david.marchand@redhat.com>,
	"ferruh.yigit@intel.com" <ferruh.yigit@intel.com>,
	"andrew.rybchenko@oktetlabs.ru" <andrew.rybchenko@oktetlabs.ru>,
	"ajit.khaparde@broadcom.com" <ajit.khaparde@broadcom.com>,
	Jerin Jacob Kollanukkaran <jerinj@marvell.com>
Subject: RE: [EXT] Re: [dpdk-stable] [PATCH v2] test: avoid hang if queues are full and Tx fails
Date: Mon, 22 Nov 2021 07:59:26 +0000
Message-ID: <BN8PR18MB248249DA1B4F0F2498B8BE73CF9F9@BN8PR18MB2482.namprd18.prod.outlook.com> (raw)
In-Reply-To: <2935187.TuyvbHr83s@thomas>


Octeontx2 driver is failing to enqueue because hardware buffers are full before test.
pmd_perf_autotest() in continuous mode tries to enqueue MAX_TRAFFIC_BURST (2048)
before starting the test.

> -----Original Message-----
> From: Thomas Monjalon <thomas@monjalon.net>
> Sent: Friday, November 12, 2021 5:02 PM
> To: Rakesh Kudurumalla <rkudurumalla@marvell.com>
> Cc: stable@dpdk.org; dev@dpdk.org; david.marchand@redhat.com;
> ferruh.yigit@intel.com; andrew.rybchenko@oktetlabs.ru;
> ajit.khaparde@broadcom.com; Jerin Jacob Kollanukkaran
> <jerinj@marvell.com>
> Subject: [EXT] Re: [dpdk-stable] [PATCH v2] test: avoid hang if queues are full
> and Tx fails
> 
> External Email
> 
> ----------------------------------------------------------------------
> 20/07/2021 18:50, Rakesh Kudurumalla:
> > Current pmd_perf_autotest() in continuous mode tries to enqueue
> > MAX_TRAFFIC_BURST completely before starting the test. Some drivers
> > cannot accept complete MAX_TRAFFIC_BURST even though rx+tx desc
> count
> > can fit it.
> 
> Which driver is failing to do so?
> Why it cannot enqueue 32 packets?
> 
> > This patch changes behaviour to stop enqueuing after few retries.
> 
> If there is a real limitation, there will be issues in more places than this test
> program.
> I feel it should be addressed either in the driver or at ethdev level.
> 
> [...]
> > @@ -480,10 +483,19 @@ main_loop(__rte_unused void *args)
> >  			nb_tx = RTE_MIN(MAX_PKT_BURST, num);
> >  			nb_tx = rte_eth_tx_burst(portid, 0,
> >  						&tx_burst[idx], nb_tx);
> > +			if (nb_tx == 0)
> > +				retry_cnt++;
> >  			num -= nb_tx;
> >  			idx += nb_tx;
> > +			if (retry_cnt == MAX_RETRY_COUNT) {
> > +				retry_cnt = 0;
> > +				break;
> > +			}
> 
> 


  reply	other threads:[~2021-11-22  7:59 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 12:47 [dpdk-stable] [PATCH] " Rakesh Kudurumalla
2021-07-20 16:50 ` [dpdk-stable] [PATCH v2] " Rakesh Kudurumalla
2021-10-19 10:19   ` Rakesh Kudurumalla
2021-10-29  7:18     ` Rakesh Kudurumalla
2021-11-12 11:32   ` Thomas Monjalon
2021-11-22  7:59     ` Rakesh Kudurumalla [this message]
2021-11-22  8:58       ` [EXT] " Thomas Monjalon
2021-11-29  8:52         ` Rakesh Kudurumalla
2021-11-29  9:13           ` Thomas Monjalon
2021-12-13  6:40             ` Rakesh Kudurumalla
2022-01-10  9:04               ` Rakesh Kudurumalla

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=BN8PR18MB248249DA1B4F0F2498B8BE73CF9F9@BN8PR18MB2482.namprd18.prod.outlook.com \
    --to=rkudurumalla@marvell.com \
    --cc=ajit.khaparde@broadcom.com \
    --cc=andrew.rybchenko@oktetlabs.ru \
    --cc=david.marchand@redhat.com \
    --cc=dev@dpdk.org \
    --cc=ferruh.yigit@intel.com \
    --cc=jerinj@marvell.com \
    --cc=stable@dpdk.org \
    --cc=thomas@monjalon.net \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

patches for DPDK stable branches

This inbox may be cloned and mirrored by anyone:

	git clone --mirror http://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ http://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git