trafficserver-users mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Bruce Lysik <>
Subject Re: selectively clear device disk cache?
Date Wed, 02 May 2012 15:49:28 GMT
Ah, ok.  So now it's even more different as we have gone back to 7 x 300GB raw device drives
instead of that one 1.7TB RAID device.
Bruce Z. Lysik <>

> From: Leif Hedstrom <>
>Cc: John Plevyak <>; Bruce Lysik <> 
>Sent: Wednesday, May 2, 2012 8:04 AM
>Subject: Re: selectively clear device disk cache?
>On 5/2/12 9:00 AM, John Plevyak wrote:
>> Means that you have too few directory entries for that disk.   Odd, unless you are
caching very small objects or have set the configuration for average object size too high.
>Right, this might be my fault :). They have mostly large files, with 1.7TB of disk, and
the default of 8KB average size creates way too many directory entries (wasting memory, disk
I/O and longer startup times). They should estimate how many objects they need, salt it appropriately,
and tune the config accordingly.
>-- Leif
View raw message