On 04/09/14 20:14, Richard Weinberger wrote: > On Thu, Sep 4, 2014 at 9:00 PM, <anton.iva...@kot-begemot.co.uk> wrote: >> Patch dependencies: >> >> [PATCH v3 01/10] Epoll based interrupt controller >> >> Full redesign of the existing UML poll based controller. The old >> poll controller incurs huge penalties for IRQ sharing and many devices >> setup due to the device list being walked twice. >> >> Additionally, the current controller has no notion of true Edge, >> Level and Write completion IRQs. >> >> This patch fixes the list walking bottleneck and adds all of >> the above alowing for UML to be scaled to 100s of devices >> (tested with 512+ network devices). >> >> [PATCH v3 02/10] Remove unnecessary 'reactivate' statements >> >> As a result of adding true Edge/Level semantics in the epoll >> controller there is no need to do the "reactivate fd" any more. >> >> This one is an enhancement of 1 and depends on it. >> >> [PATCH v3 03/10] High performance networking subsystem >> >> This patchset adds vector IO ops for xmit and receive. Xmit >> is optional (as it depends on a 3.0+ host), receive is always on. >> >> The result is that UML can now hit 1G+ rates for transports >> which have been enabled to use these. Presently this patchset >> is kept as "legacy" as possible without leveraging the possibility >> to do a true write completion poll from the new IRQ controller. >> This further performance improvement will be submitted separately. >> >> This patch has been tested extensively only with patchsets 1 and 2. >> >> [PATCH v3 04/10] L2TPv3 Transport Driver for UML >> >> This is an implementation of the Ethernet over L2TPv3 protocol >> leveraging both the epoll controller and the high perf vector IO. >> It has been extensively tested to interop versus a set of >> other implementations including Linux kernel, our port of the >> same concept to QEMU/KVM, routers, etc. >> >> Depends on 3. >> >> [PATCH v3 05/10] GRE transport for UML >> >> Same as L2TPv3 for GRE. Depends on 3 >> >> [PATCH v3 06/10] RAW Ethernet transport for UML >> >> True raw driver (note - all TSO/GSO options in the NIC must >> be turned off). Breaks through the 1G barrier with a vengeance >> and CPU to spare. Depends on 3. >> >> [PATCH v3 07/10] Performance and NUMA improvements for ubd >> >> This is a well known issue/fix, qemu has the same one. If you >> do not use pwrite you can kill a machine on cache sync with >> ease. This patch is independent of the others. >> >> [PATCH v3 08/10] Minor performance optimization for ubd >> >> Obvious minor optimization, independent of the others. >> >> [PATCH v3 09/10] Better IPC for UBD >> >> Obvious optimization, independent of the others. Pipe has a >> very short queue which has 4k granularity. It is a bad IPC >> for passing a lot of small chunks one at a time as used in UBD. >> >> [PATCH v3 10/10] High Resolution Timer subsystem for UML >> >> This version of the patch applies only to the epoll controller. >> Otherwise, the patch with minimal modifications can be applied to >> stock UML. It fixes UML as far as its use for network appliance >> on all counts - TCP performance, QoS, traffic shaping, etc. >> >> The patch is not pretty (I would have preferred to kill itimer >> completely). It however does what it says on the tin and has been >> doing it in testing for 2 years or so now. >> >> Enjoy > Thanks a lot for your work! > As I'm horrible backlogged I'll at best have next week the time to > look at your patches.
No worries, Whenever you can get around. I need to write a simple README for the GRE, L2TPv3 and RAW drivers anyway to provide examples of use, this will follow shortly (hopefully tomorrow). A. > > Thanks, > //richard > > ------------------------------------------------------------------------------ > Slashdot TV. > Video for Nerds. Stuff that matters. > http://tv.slashdot.org/ > _______________________________________________ > User-mode-linux-devel mailing list > User-mode-linux-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel ------------------------------------------------------------------------------ Slashdot TV. Video for Nerds. Stuff that matters. http://tv.slashdot.org/ _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
