Date: Sun, 26 Jun 2016 17:49:20 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 210593] Samba w/ aio throws ENOTSUPP errors on 11.0-ALPHA2 Message-ID: <bug-210593-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D210593 Bug ID: 210593 Summary: Samba w/ aio throws ENOTSUPP errors on 11.0-ALPHA2 Product: Base System Version: 11.0-CURRENT Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: jmg@FreeBSD.org $pkg info | grep samba samba36-3.6.25_3 Free SMB and CIFS client and server for Unix When accessing a samba server from MacOSX 10.10.5 w/ aio enabled via the following in the global section: aio read size =3D 1 aio write size =3D 1 aio write behind =3D true I get tons of errors: [2016/06/25 13:07:16.538032, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.542241, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.543268, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.545097, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.651903, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.654807, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.673397, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.686022, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.744821, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.812774, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.839417, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.875530, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.877068, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.905727, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.906400, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.918365, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.919426, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.919999, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.953497, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported [2016/06/25 13:07:16.965503, 0] smbd/aio.c:232(schedule_aio_read_and_X) schedule_aio_read_and_X: aio_read failed. Error Operation not supported and so on... This significantly impacts performance as Samba now consumes a large amount of CPU time, I believe trying the aio call multiple times, before it gives up, and tries a normal read or write.. After disabling this, CPU usage dropped from 60-90% down to ~5%... There are many people who have aio turned on in their configs as this is a recommended performance tuning option for Samba posted throughout the inet. --=20 You are receiving this mail because: You are the assignee for the bug.=
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