One more question - 

we have two counter - 

kstat.zfs.misc.arcstats.l2_size: 1256609410560
kstat.zfs.misc.arcstats.l2_asize: 1149007667712

can anybody explain how to understand them i.e.  l2_asize - real used space on 
l2arc an l2_size - uncompressed size,

or maybe something else ?



Vitalij Satanivskij wrote:
VS> 
VS> Data on pool have compressratio around 1.4 
VS> 
VS> On diferent servers with same data type and load L2 ARC Size: (Adaptive) 
can be diferent 
VS> 
VS> for example 1.04    TiB vs  1.45    TiB
VS> 
VS> But it's all have same porblem  - grow in time.
VS> 
VS> 
VS> More stange for us - 
VS> 
VS> ARC: 80G Total, 4412M MFU, 5040M MRU, 76M Anon, 78G Header, 2195M Other
VS> 
VS> 78G header size and ubnormal - 
VS> 
VS> kstat.zfs.misc.arcstats.l2_cksum_bad: 210920592
VS> kstat.zfs.misc.arcstats.l2_io_error: 7362414
VS> 
VS> sysctl's growing avery second.
VS> 
VS> All part's of server (as hardware part's) in in normal state.
VS> 
VS> After reboot no problem's for some period untile cache size grow to some 
limit.
VS> 
VS> 
VS> 
VS> Mark Felder wrote:
VS> MF> On Mon, Oct 7, 2013, at 13:09, Dmitriy Makarov wrote:
VS> MF> > 
VS> MF> > How can L2 ARC Size: (Adaptive) be 1.44 TiB (up) with total physical 
size
VS> MF> > of L2ARC devices 490GB?
VS> MF> > 
VS> MF> 
VS> MF> http://svnweb.freebsd.org/base?view=revision&revision=251478
VS> MF> 
VS> MF> L2ARC compression perhaps?
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