Hi Brendan, Does this mean the time is 12 midday Santa Clara time? (I won't even venture am/pm !) Thanks, /Billy.

What I actually meant was (11 am pacific) http://www.timeanddate.com/worldclock/meetingdetails.html?year=2016&month=3&day=30&hour=18&min=0&sec=0&p1=886 Blame daylight "saving" time, which saves

Perfect! From: Brenden Blanco [mailto:bblanco@...] Sent: Wednesday, March 30, 2016 3:50 PM To: O Mahony, Billy <billy.o.mahony@...> Cc: iovisor-dev@... Subject: RE: [iovisor-dev] reminder: IO Visor

ILA

Hi All, Thanks for attending the meeting today. Here are the things I took note of: (Alexei) Tracepoint patches are almost ready, to be posted when net-next opens - Can be faster than kprobes when

Hi, I want to efficiently obtain incoming http request rates by process. For that I am writing a proof of concept [0] based on

PS: I am running kernel 4.4.2 and the nightly bcc.

I wasn't thinking. I first need to read the field and then the pointed data. u8 data[4] = {}; void* datap = 0; bpf_probe_read(&datap, sizeof(datap), &skb->data); bpf_probe_read(&data, sizeof(data),

Hi all, My OS is RHEL 7.2 (kernel version is 3.10). To use bcc/bpf, I download and install the newest 4.5 kernel. After installing bcc, I find some scripts run smoothly: some run with warning: While

Hello Nan Xiao, Please see responses inline. Hope this helps. On Fri, Apr 8, 2016 at 2:18 AM, Nan Xiao via iovisor-dev <iovisor-dev@...> wrote: This occurs because kernel (generally built with gcc)

Hi Brenden, Thanks very much for your detailed explanations! Best Regards Nan Xiao

Hi I am working on IOVIOSR. I have implemented IOVISOR tools and got the output. But my purpose is different. I am working on libvmi. I have a machine on KVM hyper-visor running on my Ubuntu machine.

Hi all, Please join us for our bi-weekly call. This meeting is open to everybody and completely

FYI, as discussed in the conf call: https://www.youtube.com/watch?v=26SrOC6MXWg

Hello, if a bpf counterpart of this example would be possible, it would be really cool: http://lxr.free-electrons.com/source/samples/hw_breakpoint/data_breakpoint.c Bye, Hannes

Hello, Care must be taken, as the code path in this example as-is is only valid from process context, as mutexes will be taken during the installation of the watch point. This actually renders it a

<iovisor-dev@...> wrote: do you propose to let programs register such hw breakpoints to point to other programs? That will be hard to achieve as you said due to mutexes... but we can

Actually for network debugging it would be nice if we could classify an skb e.g. from XDP (when passed to stack) or cls_bpf ingress, and tell the kernel that if this particular skb changes e.g. its

Yes, that a eBPF program can register such a hw breakpoint within the kernel after checking for some conditions. The CPU debug registers aren't very big thus we probably can't use more than 4

Thanks all for another good discussion. There are two major updates this week. == Tracepoints First, from Alexei, the infrastructure to attach bpf programs to tracepoints has been merged in net-next.