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So how does this relate to uprobes? I've been looking into that lately because I want frequency counts (or coverage analysis) of user space programs but without

So how does this relate to uprobes? I've been looking into that lately because I want frequency counts (or coverage analysis) of user space programs but without the nop-sled overhead of xray. Does dtrace supplement or replace uprobes? Or am I really just confused?

cthalupa 10y ago
DTrace is a Solaris (and BSD/OSX) tracing tool that never quite made it to Linux (There are some attempted ports, but none of them really caught on). BPF (and adding in frontends like BCC) give you the same sort of functionality in Linux. BPF can take advantage of uprobes and instrument around them, but it interacts with them, and does not replace them