best version for server?

best version for server?

[Larry McVoy]

We're not sure if it is something we've done or just increased usage, but 
bkbits.net is getting hammered lately.  We see load averages in ~15-20 
range pretty regularly.  It's got some nasty characteristics from the
point of view of server/VM system, tons of data and not really any good
working sets.  I'm running 2.4.5 on it and that clearly has to go.  I am
going to try the rmap kernel but I'm open to other suggestions.
-- 
---
Larry McVoy            	 lm at bitmover.com           http://www.bitmover.com/lm 

Re: best version for server?

[FD Cami]

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Larry McVoy wrote:
| We're not sure if it is something we've done or just increased usage, but
| bkbits.net is getting hammered lately.  We see load averages in ~15-20
| range pretty regularly.  It's got some nasty characteristics from the
| point of view of server/VM system, tons of data and not really any good
| working sets.  I'm running 2.4.5 on it and that clearly has to go.  I am
| going to try the rmap kernel but I'm open to other suggestions.

I've been running 2.4.17 + O(1) patch for a while on a pretty
heavily loaded server (dual CPU) and it works like a charm.

I've put 2.4.19+O(1) on the test machine, it seems to behave OK.

2.4.1[7,9] have Andrea's VM BTW.

I think I still have the sources of the 2.4.17 O(1) patch...
somewhere, if you want to try, just email me.

Cheers,

- --

F. CAMI
- ----------------------------------------------------------
~ "To disable the Internet to save EMI and Disney is the
moral equivalent of burning down the library of Alexandria
to ensure the livelihood of monastic scribes."
~              - John Ippolito (Guggenheim)
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Re: best version for server?

[Rik van Riel]

On Mon, 7 Oct 2002, Larry McVoy wrote:

> We're not sure if it is something we've done or just increased usage, but
> bkbits.net is getting hammered lately.  We see load averages in ~15-20
> range pretty regularly.  It's got some nasty characteristics from the
> point of view of server/VM system, tons of data and not really any good
> working sets.

There are a few things that could help here:

1) Andrew Morton's io scheduler patch (read-latency2), which is
   in the -rmap kernel

2) reducing the number of outstanding IO commands in the 3ware
   controller/driver, so akpm's io scheduler gets a chance to do
   its work

3) better readahead, if possible...

regards,

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

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Re: best version for server?

[Gerhard Mack]

On Mon, 7 Oct 2002, Larry McVoy wrote:

> We're not sure if it is something we've done or just increased usage, but
> bkbits.net is getting hammered lately.  We see load averages in ~15-20
> range pretty regularly.  It's got some nasty characteristics from the
> point of view of server/VM system, tons of data and not really any good
> working sets.  I'm running 2.4.5 on it and that clearly has to go.  I am
> going to try the rmap kernel but I'm open to other suggestions.

I think your being slashdotted..

	Gerhard

--
Gerhard Mack

gmack@innerfire.net

<>< As a computer I find your faith in technology amusing.