Date: Wed, 13 May 2015 09:04:50 -0600 From: Warner Losh <imp@bsdimp.com> To: Andreas Andersson <aandersson@tappsi.co> Cc: freebsd-arm@freebsd.org Subject: Re: Performance issues with raspberry pi 2 Message-ID: <1EE88AD4-2B4A-496B-9366-7F9A89F57D6D@bsdimp.com> In-Reply-To: <CAOx9_ZiUw5nkBK=Bsumb=K2W1hv0P%2BNAwT7OXE7VAz_96awqOw@mail.gmail.com>
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[-- Attachment #1 --] > On May 13, 2015, at 5:27 AM, Andreas Andersson <aandersson@tappsi.co> wrote: > > I do understand this is still very new and not ready for "producton" use. > > But freebsd 11 on rpi2 suffers permance issues. Severely. > > For instance, the same code I am running (tornado project which inserts > stuff to rabbitmq) is running at ~190 req/s or 190 publishments/sec (to > rabbitmq) on raspbian. > > On FreeBSD 11 this is at around 85/s. > > With my consumer (using all the cores) I am seeing a high get rate from > rabbitmq. But ACKing those messages are painstakingly behind. How can I > help you debug this. > > What information would you need? > > > > > My own theory on this is that on FreeBSD we are doing stuff with software > floating point, while on raspbian we are doing stuff with hardware floating > point. FreeBSD is still using soft float. We’ll be transitioning that to hard float for 11.0, and should have the code for that pushed into head by the end of BSDCan 2015. In the mean time, you can try building an image with TARGET_ARCH=armv6hf to see if that is the cause of the problems. Warner [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJVU2gTAAoJEGwc0Sh9sBEAUPwQAKNTzXDnMmk/aoNIwmp6Vx/h BIu8FU81rEo1xs7DIEm4lhESJnCuHjHrS1bj1SSdfv6y/ucVrb9PuUwEmECkkIlq L1+wlJwwFOJPy6tgHFYg/N6qwziJJFAknYqVjOPUcBr4HHzLlE/LA0pqhaqjT2EM kAY5e8lYcacX1JQwR2XqXsIKPf5FKm5R5+OMoICt8sXy1LFUSev7rimH3hN5cgRE gVw1Ub1iOVyzE/8Z4S+mD1S+yUcJhPXNuVPf/g+RjIbA3DQqfd9OLrPZEe50j49c Gm54zD6aIij6ExJKzEUHQSnLkWn4rb/MN+3GUWBIUW7BJJg/P8ZQzrfukNG88PNB 8qrQJ455hmv7VWP4DFva2YrWl0vrBldECpEZQ68lOOU0MVd8WHJCR5KMTU0aV2cj DNm1NZaHd0fzEZHseDLwvI4ijcZynO8FrBLQR69eaZSCWTJ44PMEGOl5tPDFyCfI v3FVxc8u1x9FZH9tjL7yivL8i4n60VjlDA6ZBP9XEu3+P5w4xfByNKHLGJiELKL/ B1zm5G5nooNtz1n19h28v9111b4t1HHjl2cQiIYGwkqJuKmIeBOhPKtshWSmD8Hn uiGR791ebgJTDN2MhCpihPD+GGALXB7ZLaLbSE36IMWaS53i8BRP4cWqKP3ZFFem le4lKS8zprWvNVNI3Vdu =W6Pr -----END PGP SIGNATURE-----home | help
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