Category Archives: Performance

Kernel 3.17-rc3 – Breaks VMNET – and a Fix..

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Just tested Kernel 3.17-rc3, and it breaks VMware (10.0.3) – vmnet: ……………. /tmp/modconfig-d0zqLW/vmnet-only/netif.c: In function ‘VNetNetIf_Create’: /tmp/modconfig-d0zqLW/vmnet-only/netif.c:152:64: error: macro “alloc_netdev” requires 4 arguments, but only 3 given     dev = alloc_netdev(sizeof *netIf, deviceName, VNetNetIfSetup);                                                                 ^ /tmp/modconfig-d0zqLW/vmnet-only/netif.c:152:10: error: ‘alloc_netdev’ undeclared (first use in this function)     dev = alloc_netdev(sizeof *netIf, deviceName, VNetNetIfSetup); …………… Thanks to Erwin Zoer (see … Continue reading →

Skype / Linux – When the Fix Becomes the Problem.. (Updated)

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I have been running a ‘fixed’ version of Skype on my Linux systems for some time (Fedora 20, x86_64), which included ‘PULSE_LATENCY_MSEC=30’ in a skype script to run the executable (skype-bin).. Recently, I have experienced garbled and ‘sped up’ sound, and this was easily demonstrated using the Skype Test Call facility.. The solution to this used to … Continue reading →

Kernel 3.17-rc1 – OK with VMware and NVIDIA..

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Just installed Kernel 3.17-rc1, and the latest VMware (10.0.3) and NVIDIA (340.32) drivers compile and load OK…    I had previously had trouble with VMware and NVIDIA’s ‘beta’ driver 343.13, so did not test this version again.. $ uname -a Linux rglinux-i7 3.17.0-rc1 #1 SMP PREEMPT Sat Aug 16 13:56:55 PDT 2014 x86_64 x86_64 x86_64 GNU/Linux Brief details … Continue reading →

NVIDIA – New Beta Driver – 343.13 – Breaks VMware..

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Updated to the latest NVIDIA ‘beta’ driver – 343.13 – which compiles and installs OK on Kernel 3.16 (from kernel.org..).. More details can be found here:  http://www.geforce.com/drivers/results/77410 Just tested this with VMware, and it breaks fullscreen mode, so reverted to the previous version – 340.24.. Robert Gadsdon.  August 12, 2014. … Continue reading →

ARM – CuBox to 3.16-rc7 – and an SD Card Warning..

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Just updated the CuBox i4-Pro to kernel 3.16-rc7, from the source code available here: https://github.com/jmontleon/fedora-20-cubox-i_hb/tree/3.16-rc7 $ uname -a Linux rgcubox 3.16.0-rc7 #1 SMP PREEMPT Wed Jul 30 11:31:19 EDT 2014 armv7l armv7l armv7l GNU/Linux I had originally used an old ‘spare’ micro-SD card (Class 4, 16GB) but had noticed sluggish performance and random filesystem errors, eventually leading … Continue reading →

Kernel 3.15-rc1 – Less Painful…

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Just install Kernel 3.15-rc1 on the test system, and VMware 10.0.1 (with the vmnet patch, if you need it) and the latest NVIDIA driver – 337.12 – compile and load and run OK… $ uname -a Linux rg6830l 3.15.0-rc1 #1 SMP PREEMPT Mon Apr 14 09:20:22 BST 2014 x86_64 x86_64 x86_64 GNU/Linux One slight quirk that I … Continue reading →

Kernel 3.14-rc7 – Getting Better, Now..

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After all the ‘noise’ around recent 3.14-rc releases, things appear to have calmed down with 3.14-rc7.. Details are here:   http://lkml.iu.edu//hypermail/linux/kernel/1403.2/00164.html As before, VMware 10.0.1 – with the usual patch – compiles and runs OK, and the latest NVIDIA driver 334.21 – with the nv-linux.h patch mentioned in an earlier article – compiles and loads and runs OK..   … Continue reading →

ARM – Odroid U3 to 3.14-rc3, but USB Fail..

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After a lot of ‘hacking’, I managed to get the Odroid U3 to boot with Kernel 3.14-rc3, from http://git.prahal.homelinux.net/odroid.git/ , but there were persistent issues with USB, which refused to recognise any devices connected (apart from the USB memory stick (usb-storage) connection built-in to the kernel at compile time). Fedora release 20 (Heisenbug) Kernel 3.14.0-rc3 on an … Continue reading →

ARM – Odroid Progress – Compiled Kernel, and KDE..

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Fedora 20 – KDE Desktop on ODROID U3 Found a suitable source tree for (old!) kernel 3.8.13.16: git clone -b odroid-3.8.y –single-branch https://github.com/hardkernel/linux – which compiled on the device itself with no problems – the old-fashioned way (# make zImage, etc..) and installed and ran without problems: Fedora release 20 (Heisenbug) Kernel 3.8.13.16 on an armv7l (ttySAC1) … Continue reading →

ARM – At Last, a Modern System..

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As my existing ARM systems are getting a bit ‘old’ – being based on armv5 (DreamPlug) or armv6 (Raspberry Pi) – neither of which is supported by the most recent Fedora release, I have been looking for an armv7-based system for further development and testing.. After some experiences with promising designs that have – sadly – failed … Continue reading →