Re: REGRESSION f54b311142a92ea2e42598e347b84e1655caf8e3 tcp auto corking slows down iSCSI file system creation by factor of 70 [WAS: 4 TB VMFS creation takes 15 minutes vs 26 seconds]

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To: Eric Dumazet <eric.dumazet@xxxxxxxxx>
Subject: Re: REGRESSION f54b311142a92ea2e42598e347b84e1655caf8e3 tcp auto corking slows down iSCSI file system creation by factor of 70 [WAS: 4 TB VMFS creation takes 15 minutes vs 26 seconds]
From: Thomas Glanzmann <thomas@xxxxxxxxxxxx>
Date: Sat, 8 Feb 2014 15:12:49 +0100
Cc: John Ogness <john.ogness@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, "Nicholas A. Bellinger" <nab@xxxxxxxxxxxxxxx>, target-devel <target-devel@xxxxxxxxxxxxxxx>, Linux Network Development <netdev@xxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>
In-reply-to: <1391868564.10160.91.camel@edumazet-glaptop2.roam.corp.google.com>
Mail-followup-to: Eric Dumazet <eric.dumazet@xxxxxxxxx>, John Ogness <john.ogness@xxxxxxxxxxxxx>, Eric Dumazet <edumazet@xxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, "Nicholas A. Bellinger" <nab@xxxxxxxxxxxxxxx>, target-devel <target-devel@xxxxxxxxxxxxxxx>, Linux Network Development <netdev@xxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)

Hello Eric,

[RESEND: dropped CC accidently]

> 10.101.99.5 or 10.101.0.13?

10.101.99.5 (iSCSI Target)

tcpdump -i bond0.101 -s 0 -w /tmp/tcp_auto_corking_on_patched.pcap host esx-03.v101.campusvl.de

Cheers,
        Thomas
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References:
- File I/O Backend with 4TB and ESXi file system creation on ESX fails
  - From: Thomas Glanzmann
- Re: File I/O Backend with 4TB and ESXi file system creation on ESX fails
  - From: Nicholas A. Bellinger
- Re: File I/O Backend with 4TB and ESXi file system creation on ESX fails
  - From: Thomas Glanzmann
- 4 TB VMFS creation takes 15 minutes [ WAS: VMFS 4 TB creation fails ]
  - From: Thomas Glanzmann
- Re: 4 TB VMFS creation takes 15 minutes [ WAS: VMFS 4 TB creation fails ]
  - From: Nicholas A. Bellinger
- Re: 4 TB VMFS creation takes 15 minutes [ WAS: VMFS 4 TB creation fails ]
  - From: Thomas Glanzmann
- REGRESSION f54b311142a92ea2e42598e347b84e1655caf8e3 tcp auto corking slows down iSCSI file system creation by factor of 70 [WAS: 4 TB VMFS creation takes 15 minutes vs 26 seconds]
  - From: Thomas Glanzmann
- Re: REGRESSION f54b311142a92ea2e42598e347b84e1655caf8e3 tcp auto corking slows down iSCSI file system creation by factor of 70 [WAS: 4 TB VMFS creation takes 15 minutes vs 26 seconds]
  - From: Eric Dumazet
- Re: REGRESSION f54b311142a92ea2e42598e347b84e1655caf8e3 tcp auto corking slows down iSCSI file system creation by factor of 70 [WAS: 4 TB VMFS creation takes 15 minutes vs 26 seconds]
  - From: Thomas Glanzmann
- Re: REGRESSION f54b311142a92ea2e42598e347b84e1655caf8e3 tcp auto corking slows down iSCSI file system creation by factor of 70 [WAS: 4 TB VMFS creation takes 15 minutes vs 26 seconds]
  - From: Eric Dumazet

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