Re: PHP performance on Xen domU with mulitple vcpu

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Mon, 19 May 2025 12:34:01 +0000
> From: Emmanuel Dreyfus <manu%netbsd.org@localhost>
> 
> On Mon, May 19, 2025 at 12:11:37PM +0000, Taylor R Campbell wrote:
> > Please build with KDTRACE_HOOKS _and_ the patch I already sent you for
> > this, which I haven't committed yet because I was waiting for your
> > feedback on verifying it:
> > 
> > https://mail-index.NetBSD.org/tech-kern/2025/04/06/msg030329.html
> 
> Sorry, missed it.
> 
> I applied that patch, and now I fail a bit later?
> 
> fbt: no CTF data for module netbsd
> dtrace: invalid probe specifier sdt:xen:clock:, sdt:xen:timecounter:,sdt:xen:hardclock:systime-backward, sdt:xen:hardclock:jump,sdt:xen:hardclock:missed { printf("%d %d %d %d %d %d %d", arg0, arg1, arg2, arg3, arg4, arg5, arg6) }: "/usr/lib/dtrace/psinfo.d", line 46: syntax error near "u_int"

Pass `-x nolibs' to dtrace -- this works around the bug where the Xen
bootloader doesn't pass the kernel's ctf sections to NetBSD (needs to
be fixed but I don't know how, would have to investigate how the Xen
loader works).