Re: Linux RAID with btrfs stuck and consume 100 % CPU

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To: Chris Murphy <lists@xxxxxxxxxxxxxxxxx>
Subject: Re: Linux RAID with btrfs stuck and consume 100 % CPU
From: Chris Murphy <lists@xxxxxxxxxxxxxxxxx>
Date: Thu, 17 Sep 2020 11:20:23 -0600
Cc: Vojtech Myslivec <vojtech@xxxxxxxxxxxx>, Song Liu <songliubraving@xxxxxx>, Michal Moravec <michal.moravec@xxxxxxxxxxxxx>, Btrfs BTRFS <linux-btrfs@xxxxxxxxxxxxxxx>, Linux-RAID <linux-raid@xxxxxxxxxxxxxxx>
In-reply-to: <CAJCQCtTYAg-uNpk2WYv0QDWH+prfnDN5oKyKmvTVHjARu_w0Kw@mail.gmail.com>
References: <d3fced3f-6c2b-5ffa-fd24-b24ec6e7d4be@xmyslivec.cz> <CAJCQCtSfz+b38fW3zdcHwMMtO1LfXSq+0xgg_DaKShmAumuCWQ@mail.gmail.com> <29509e08-e373-b352-d696-fcb9f507a545@xmyslivec.cz> <CAJCQCtRx7NJP=-rX5g_n5ZL7ypX-5z_L6d6sk120+4Avs6rJUw@mail.gmail.com> <695936b4-67a2-c862-9cb6-5545b4ab3c42@xmyslivec.cz> <CAJCQCtQWNSd123OJ_Rp8NO0=upY2Mn+SE7pdMqmyizJP028Yow@mail.gmail.com> <2f2f1c21-c81b-55aa-6f77-e2d3f32d32cb@xmyslivec.cz> <CAJCQCtTQN60V=DEkNvDedq+usfmFB+SQP2SBezUaSeUjjY46nA@mail.gmail.com> <4b0dd0aa-f77b-16c8-107b-0182378f34e6@xmyslivec.cz> <CAJCQCtQWh2JBAL_SDRG-gMd9Z1TXad7aKjZVUGdY1Akj7fn5Qg@mail.gmail.com> <5e79d1f8-7632-48ef-de56-9e79cba87434@xmyslivec.cz> <CAJCQCtTYAg-uNpk2WYv0QDWH+prfnDN5oKyKmvTVHjARu_w0Kw@mail.gmail.com>

The iostat isn't particularly revealing, I don't see especially high
%util for any device. SSD write MB/s gets up to 42 which is
reasonable.


--
Chris Murphy

References:
- Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Vojtech Myslivec
- Re: Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Chris Murphy
- Re: Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Chris Murphy
- Re: Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Chris Murphy
- Re: Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Chris Murphy
- Re: Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Vojtech Myslivec
- Re: Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Chris Murphy
- Re: Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Vojtech Myslivec
- Re: Linux RAID with btrfs stuck and consume 100 % CPU
  - From: Chris Murphy

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