Re: [vpp-dev] Implementation of a hash table that can be both written and read by all VPP workers #vpp
Thanks Dave, in our use case the number of reads are definitely going to be much higher than the number of writes. That said, we also expect number of writes to be about 10K - 20K writes/second. I am trying to figure out if any one has optimized the Bihash table for this type of use case as well. If you know of any such implementation, could you please let me know. Regards Krishna -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#14096): https://lists.fd.io/g/vpp-dev/message/14096 Mute This Topic: https://lists.fd.io/mt/34316400/21656 Mute #vpp: https://lists.fd.io/mk?hashtag=vpp&subid=1480452 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
[vpp-dev] Implementation of a hash table that can be both written and read by all VPP workers #vpp
Hi, We have a use case that requires us to implement a hash table with multi-thread support. In our use case all VPP workers can add/remove/access (i.e. write and read) entries to/from this hash table. I looked at the VPP Bihash implementation that has the property of not requiring reader locks. Ideally I would like to take a writer lock only when multiple writers are trying to update the same bucket. If anyone is aware of any such implementation in the Fd.Io code base, could you please point me to it so that I can use it as an example? Best Regards, Krishna -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#14078): https://lists.fd.io/g/vpp-dev/message/14078 Mute This Topic: https://lists.fd.io/mt/34316400/21656 Mute #vpp: https://lists.fd.io/mk?hashtag=vpp&subid=1480452 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
[vpp-dev] Crash in qsort
Hi, I am using the API vec_sort_with_function to sort a vector and I am noticing that it crashes. This API uses qsort function to sort the vector. Are there any knows issues with the implementation of qsort? I did see a couple of messages in this list discussing potential buffer overflow issues with this function. Can someone please educate me about other options I can use for sorting the vector (other than writing my own function?) We are using v18.10 version of Fd.Io. Thanks Krishna -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#13984): https://lists.fd.io/g/vpp-dev/message/13984 Mute This Topic: https://lists.fd.io/mt/34147878/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [vpp-dev] Support for shared subnet
On Wed, Sep 11, 2019 at 10:20 AM, Burt Silverman wrote: > > Perhaps Krishna could use a total of 2 VLANs rather than 2 VLANs per line > card, and also think in terms of point to point rather than subnets. I > have not thought through whether or how that helps hide the traffic > splitting/load balancing issue (or any other fine details.) > > Thanks everyone for your responses. I will explore these suggestions. -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#13983): https://lists.fd.io/g/vpp-dev/message/13983 Mute This Topic: https://lists.fd.io/mt/34092746/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
Re: [vpp-dev] Support for shared subnet
Our product has multiple line cards and each line card has multiple interfaces. We run an instance of VPP on each line card. All of these interfaces are connected to a L2 switching network. A PE router is also connected to this L2 network for connectivity to internet. In order to explain this use case, lets say we currently have two line cards (LC-1 and LC-2) and each line card has two interfaces. LC-1 has interfaces IF-11 & IF-12 and similarly LC-2 has interfaces IF-21 & IF-22. The following is a sample of configuration that is currently used. -- -- -- Line CardInterface Name VLANIP Address on Interface IP Address on PE router -- -- -- LC-1 IF-11 101 10.1.1.2/24 ( http://10.1.1.2/24 ) 10.1.1.1/24 ( http://10.1.1.1/24 ) LC-1 IF-12 102 10.1.2.2/24 ( http://10.1.2.2/24 ) 10.1.2.1/24 ( http://10.1.2.1/24 ) LC-2 IF-21 103 10.1.3.2/24 ( http://10.1.3.2/24 ) 10.1.3.1/24 ( http://10.1.3.1/24 ) LC-2 IF-22 104 10.1.4.2/24 ( http://10.1.4.2/24 ) 10.1.4.1/24 ( http://10.1.4.1/24 ) -- -- - The problem we are facing is that every time we add a new line card to our product, we are now required to also configure additional VLANs and IP subnets on the PE router. I am trying to explore if we can simply configure one VLAN for all of these interfaces and configure IP addresses of the same IP subnet on each interface. An example configuration that I’d like to use if this were possible is shown below. In this approach we only configure one vlan with one IP address on the PE router and when we add a new line card to our product, we only need to configure IP addresses in the IP subnet 10.1.1.0/24 ( http://10.1.1.0/24 ) IP subnet on the interfaces of this new line card. -- -- -- Line CardInterface Name VLANIP Address on Interface IP Address on PE router -- -- -- LC-1 IF-11 101 10.1.1.2/24 ( http://10.1.1.2/24 ) 10.1.1.1/24 ( http://10.1.1.1/24 ) LC-1 IF-12 101 10.1.1.3/24 ( http://10.1.1.3/24 ) LC-2 IF-21 101 10.1.1.4/24 ( http://10.1.1.4/24 ) LC-2 IF-22 101 10.1.1.5/24 ( http://10.1.1.5/24 ) -- -- - Thanks Krishna Reply Reply all Forward -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#13947): https://lists.fd.io/g/vpp-dev/message/13947 Mute This Topic: https://lists.fd.io/mt/34092746/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
[vpp-dev] Support for shared subnet
Hi, We have a use case where we'd like to configure IP addresses on multiple interfaces in the same IP subnet. Currently this use case seems to be unsupported in 18.10 version of Fd.Io. Is this feature supported in a more current version? If not, can you please provide me guidance on how I can add support to this functionality? vpp# show version vpp v18.10-2 vpp# show interface address VirtualFunctionEthernet0/6/0 (up): VirtualFunctionEthernet0/6/0.56 (up): L3 10.10.56.1/24 VirtualFunctionEthernet0/8/0 (up): VirtualFunctionEthernet0/8/0.57 (up): L3 10.10.57.1/24 vpp# set int ip address VirtualFunctionEthernet0/6/0.56 10.10.57.2/24 set interface ip address: failed to add 10.10.57.2/24 which conflicts with 10.10.57.1/24 for interface VirtualFunctionEthernet0/8/0.57 vpp# set int ip address VirtualFunctionEthernet0/6/0.56 10.10.62.2/24 Thanks Krishna -=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#13937): https://lists.fd.io/g/vpp-dev/message/13937 Mute This Topic: https://lists.fd.io/mt/34092746/21656 Group Owner: vpp-dev+ow...@lists.fd.io Unsubscribe: https://lists.fd.io/g/vpp-dev/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
