Re: [squid-users] high iowait on cache_swap_low

From: Henrik Nordström <henrik_at_henriknordstrom.net>
Date: Tue, 01 Jun 2010 17:19:55 +0200

tis 2010-06-01 klockan 12:38 +0000 skrev sameer khan:

> We are using 2 x 320GB SATA2 with reiserfs 3.6. The machine experiences high iowait when the cache reaches cache_swap_low. What we have observed that it is constantly stuck at cache_swap_low. If we purge the cache it starts to work fine again until cache hits cache_swap_low mark.

That's because the I/O load almost doubles then.. removing content from
a filesystem is nearly as expensive as writing it in the first place.

Regards
Henrik
Received on Tue Jun 01 2010 - 15:20:00 MDT

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