Hi, I was using nfsslower in bcc tools and noticed that it doesn't print out slow commit operations, which sometimes cause long delays in NFS writes. I tried adding code to trace slow commit operation

Hello, as part of a university project I am analysing the dbslower tool to evaluate the performance cost of tracing the queries and to test what can be traced with it. As MySQL dropped support for Dtr

I have some questions about cachetop.py tool. Why the total accesses is defined as the times of entering mark_page_accessed plus mark_buffer_dirty functions? Doesn't enter mark_buffer_dirty must also

Hi all, We are parsing DHCP packets in TC egress program, In our case, the packet after the UDP header was not present in between skb->data and skb->data_end. On further investigation we found that it

Hi I am looking for some bcc issues for newbie. Any link ? Jules ..

This is the final reminder for the Call for Proposals (CFP) for the Networking and BPF track at the 2022 edition of the Linux Plumbers Conference (LPC), which is planned to be held in Dublin, Ireland,

This is a reminder for the Call for Proposals (CFP) for the Networking and BPF track at the 2022 edition of the Linux Plumbers Conference (LPC), which is planned to be held in Dublin, Ireland, on Sept

https://github.com/iovisor/bcc/issues/3891 I have the same issue, anyone can help me to fix it?

We are pleased to announce the Call for Proposals (CFP) for the Networking and BPF track at the 2022 edition of the Linux Plumbers Conference (LPC), which is planned to be held in Dublin, Ireland, on

I installed on latest Raspbian (bullseye) with Snapcraft. However, when I tried to run hello_world.py with python3, I got modprobe: FATAL: Module kheaders not found in directory /lib/modules/5.10.63-v

Thought I added the #bcc tag but I no longer see it :( So just in case, it's not clear, this is with BCC.

Hi, Was wondering if there is a way to count the number of times map.ringbuf_reserve() fails for a BPF_RINGBUF_OUTPUT buffer? This way I can get notified in userspace that I have missed events, and mi

Dear all, how can I access the payload of the packet in a program attached to the TC egress hook (SCHED_CLS attached to clsact qdisc)? ctx->data_end points to the end of the L4 header, while on the in

Hi, Can someone please let me know that there is any way to get a CPU profile for a specific function using eBPF? Thanks & Regards, Ragalahari

This is a reminder for the Call for Proposals (CFP) for the Networking and BPF track at the 2021 edition of the Linux Plumbers Conference (LPC), which will be held virtually on the wider Internet, on

This is a reminder for the Call for Proposals (CFP) for the Networking and BPF track at the 2021 edition of the Linux Plumbers Conference (LPC), which will be held virtually on the wider Internet, on

Hi everyone, I am trying to use XDP to track outgoing traffic from docker containers deployed using docker swarm and running in a network using the driver overlay. I am using a simple xdp program base

Hi, Can someone please help me to pin a BPF map in custom path for a TC program. My requirement is pin a map in interface-specific path (like /sys/fs/bpf/eth0/) Regards, Ragalahari

Is there a reason why map.increment() internally copies the key into a stack variable? When building a key inline, it uses double the stack space and incurs the cost of a copy. For u64 keys this is fi

1. How do I attach `BPF_PROG_TYPE_SCHED_CLS`/`classifier` BPF programs to specific data path(i.e. ingress or egress) using libbpf ? I found some comments related in the source: ``` The **BPF_F_INGRESS