From: Arend van Spriel <arend@broadcom.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: Felix Fietkau <nbd@openwrt.org>,
"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
Subject: Re: brcmsmac: regression in transmit throughput since 3.19-rc1
Date: Mon, 19 Jan 2015 16:48:03 +0100 [thread overview]
Message-ID: <54BD2733.6090305@broadcom.com> (raw)
In-Reply-To: <1421671947.1965.27.camel@sipsolutions.net>
On 01/19/15 13:52, Johannes Berg wrote:
> Hi Arend,
>
>> On our nightly test setups I found that STA->AP TCP iperf showed a
>> regression in brcmsmac after I upgraded them from 3.18-rc5
>> wireless-testing (f638577)to 3.19-rc1 wireless-testing (f9e7c6c). The
>> attached pictures are historic results showing clear drop on the last run.
>>
>> Has there been any report on there since 3.19-rc1 and would you have a
>> pointer on where to start looking. The changes in brcmsmac look trivial
>> so looking at mac80211 now. There are some changes in minstrel and
>> brcmsmac is using minstrel_ht rate control.
>
> I haven't heard of anything like that yet. No idea where to look either
> - but the drop is significant enough that perhaps you can bisect?
Bisect it is. Was hoping for some obvious change to avoid that.
Regards,
Arend
prev parent reply other threads:[~2015-01-19 15:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-18 13:26 brcmsmac: regression in transmit throughput since 3.19-rc1 Arend van Spriel
2015-01-19 12:52 ` Johannes Berg
2015-01-19 15:48 ` Arend van Spriel [this message]
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