From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <9ed943cac2b126778cf7fbccc4d6d948@hamnavoe.com> To: 9fans@9fans.net From: Richard Miller <9fans@hamnavoe.com> Date: Thu, 31 Dec 2015 11:57:36 +0000 In-Reply-To: <327e2f1c17187c02a3cc24639321b9e2@proxima.alt.za> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Subject: Re: [9fans] any updates on go for plan9/arm? Topicbox-Message-UUID: 7c57a11c-ead9-11e9-9d60-3106f5b1d025 > Is the coherency problem documented anywhere? I appreciate I ought to > know the answer, but I don't own a Pi and have not given this as much > attention as I believe I ought to. The kernel in /n/sources/contrib/miller/9/bcm supports multicore on the Raspberry Pi 2, but has an elusive "one last bug" which I suspect has to do with cache or page table coherency. The symptom is very infrequent memory corruption under heavy load, and the go test suite with *ncpu=4 occasionally triggers it.