On 09/11/2011, at 17:32, Garrett Cooper wrote >> dd's of large files (spooled backups going to tape) to /dev/null are as slow as Samba. > > - Dedupe? Nope. > - Compression? On the mail spool & ports, but not on the tape spool. > - How much RAM? 8GB. > - What debug options do you have enabled in the kernel? It is 8.2-GENERIC so.. no WITNESS (for example) > I've been noticing a slowdown in some respects with NFS/SMB, but I > suspected it was because I have an re(4) based NIC. ZFS has also wired > down a lot of my system memory for the L2ARC… re isn't great but I wouldn't expect it to slow down over time.. Unless bounce buffers got used more and more or something. I have an em0 card in this system - but in any case it is slow locally (i.e. dd a large file with 64k block size). -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8CReceived on Wed Nov 09 2011 - 06:07:45 UTC
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