Date: Mon, 29 Mar 2021 15:36:42 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 254639] Fork syscall performance Message-ID: <bug-254639-227-bLIAQ8C00O@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-254639-227@https.bugs.freebsd.org/bugzilla/> References: <bug-254639-227@https.bugs.freebsd.org/bugzilla/>
next in thread | previous in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254639 --- Comment #2 from Kirill <kirill@varnakov.com> --- I have 192GB. Trace: dtrace -q -n 'fbt::pmap_copy:entry /pid =3D=3D $target/{self->ts =3D timest= amp} fbt::pmap_copy:return /self->ts/{@ =3D sum(timestamp - self->ts); self->ts = =3D 0;} tick-1s {printa("spent %@dns copying\n", @); clear(@);}' -c "python test_fork.py" spent 238724ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying 25576 8.959986448287964 spent 525185651ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 279323ns copying 25593 4.342242956161499 spent 434345424ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 352273ns copying spent 423458987ns copying spent 0ns copying 25597 7.248447418212891 spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying 25602 4.694051027297974 spent 432109608ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying spent 0ns copying 25619 4.810415983200073 --=20 You are receiving this mail because: You are the assignee for the bug.=
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-254639-227-bLIAQ8C00O>