On more recent kernels, these are now sysctl parameters. You can put the following in /etc/sysctl.conf (or a new .conf file in /etc/sysctl.d) and run sysctl -w (or reboot):
sunrpc.tcp_max_slot_table_entries = 128 sunrpc.tcp_slot_table_entries = 128 sunrpc.udp_slot_table_entries = 64
That being said, you might want to check your current settings. At least on CentOS 7, sunrpc.tcp_max_slot_table_entries defaults to 65536, which is greater than the NetApp tuning, and should be more than large enough to ensure good write performance.
Side note, hard has been the default for a while now, and intr has been ignored for over a decade, so you can skip those (though they're not harmful to provide).
Thanks, Michael
From: Scott Eno cse@hey.com Date: Tuesday, July 7, 2020 at 8:46 AM To: tmac tmacmd@gmail.com, "Parisi, Justin" justin.parisi@netapp.com Cc: Toasters toasters@teaparty.net Subject: Re: Re:
NetApp docs talk about these settings: udp_slot_table_entries=64 tcp_slot_table_entries=128 tcp_max_slot_table_entries=128
as being for RHEL 6.3 and above. The system I'm helping a user with is Ubuntu 18.04.3. Do these settings still apply (noting there's currently no sunrpc.co, or sunrpc.conf, under modprobe.d). "Parisi, Justin" justin.parisi@netapp.com wrote: Just an FYI a new update to that TR is coming soon.
Get Outlook for iOShttps://aka.ms/o0ukef ________________________________ From: Toasters toasters-bounces@teaparty.net on behalf of tmac tmacmd@gmail.com Sent: Monday, July 6, 2020 9:51:07 PM To: Scott Eno cse@hey.com Cc: Toasters toasters@teaparty.net Subject: Re:
NetApp Security WARNING: This is an external email. Do not click links or open attachments unless you recognize the sender and know the content is safe.
https://www.netapp.com/us/media/tr-4067.pdf
Hard, intr, nfsvers=3, rsize=65536,wsize=65536,proto=tcp,mountproto=tcp
Dont forget to modify the client to increase/set tcp_max_slot_table_entries to 128.
--tmac
Tim McCarthy, Principal Consultant Proud Member of the #NetAppATeamhttps://twitter.com/NetAppATeam I Blog at TMACsRackhttps://tmacsrack.wordpress.com/
On Mon, Jul 6, 2020 at 8:45 PM Scott Eno via Toasters <toasters@teaparty.netmailto:toasters@teaparty.net> wrote:
---------- Forwarded message ---------- From: Scott Eno <cse@hey.commailto:cse@hey.com> To: Toasters <toasters@teaparty.netmailto:toasters@teaparty.net> Cc: Bcc: Date: Tue, 07 Jul 2020 00:42:56 +0000 Subject: fstab nfsv3 mount favorites? Hi,
It’s been a number of years since I worked in a Linux/NFS shop, so while I search for my old fstab mount options for a one-off project, does anyone have their go-to fstab nfsv3 mount options handy? The exported volume is on an ONTAP 9.6 cluster if it matters.
---------- Forwarded message ---------- From: Scott Eno via Toasters <toasters@teaparty.netmailto:toasters@teaparty.net> To: Toasters <toasters@teaparty.netmailto:toasters@teaparty.net> Cc: Bcc: Date: Tue, 7 Jul 2020 01:43:01 +0100 Subject: _______________________________________________ Toasters mailing list Toasters@teaparty.netmailto:Toasters@teaparty.net https://www.teaparty.net/mailman/listinfo/toasters