From: Eric Dumazet <eric.dumazet@gmail.com>
To: Jesper Dangaard Brouer <hawk@diku.dk>
Cc: Jesper Dangaard Brouer <hawk@comx.dk>,
Linux Kernel Network Hackers <netdev@vger.kernel.org>,
Robert Olsson <robert@herjulf.net>
Subject: Re: Strange CPU load when flushing route cache (kernel 2.6.31.6)
Date: Mon, 23 Nov 2009 15:03:29 +0100 [thread overview]
Message-ID: <4B0A9631.2030705@gmail.com> (raw)
In-Reply-To: <Pine.LNX.4.64.0911231437020.24347@ask.diku.dk>
> grep LowTotal /proc/meminfo
> LowTotal: 747080 kB
>
> What does that mean? Is it bad? What should I run on a 32-bit
> system/kernel?
If you have more than 1GB of physical ram, and use your machine as a router, you might
compile a 2GB/2GB User/Kernel kernel, to get twice available RAM for kernel
and more IP route entries (if needed)
make menuconfig
--> Processor type and features
--> Memory split
--> 2G/2G
> Can you recommend any other /proc/sys/ tuning options?
Really hard to say without exact context of use :)
>
> Does my kernel boot option rhash_entries=262143 make sense anymore?
> Or do we adjust the hash bucket size dynamically these days?
>
Its not dynamic yet.
next prev parent reply other threads:[~2009-11-23 14:03 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-11-23 9:58 Strange CPU load when flushing route cache (kernel 2.6.31.6) Jesper Dangaard Brouer
2009-11-23 10:29 ` Eric Dumazet
2009-11-23 12:28 ` Jesper Dangaard Brouer
2009-11-23 13:25 ` Eric Dumazet
2009-11-23 13:48 ` Jesper Dangaard Brouer
2009-11-23 14:03 ` Eric Dumazet [this message]
2009-11-26 10:51 ` Jesper Dangaard Brouer
2009-11-26 11:05 ` Eric Dumazet
2009-11-23 15:07 ` robert
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