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Re: NFS and fsfs: slow commit performance

From: Florian Weimer <fweimer_at_bfk.de>
Date: Tue, 18 Jan 2011 14:49:42 +0000

* Blair Zajac:

> Attempting to perform high commit rates into an fsfs repository on NFS
> with two or more Linux boxes, one of the processes can get stuck in
> fcntl() for over 30 seconds:
>
> open("repo/db/write-lock", O_RDWR) = 4
> fcntl(4, F_SETLKW, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}

What's the return value of fcntl?

(I wonder if this is a firewall issue, and the lock is never actually
acquired.)

-- 
Florian Weimer                <fweimer_at_bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstraße 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99
Received on 2011-01-18 15:50:24 CET

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