similar to: Understanding the ARC - arc_buf_hdr and arc_buf_t

ZFS works really stable on FreeBSD, but I''m biggest problem is how to control ZFS memory usage. I''ve no idea how to leash that beast. FreeBSD has a backpresure mechanism. I can register my function so it will be called when there are memory problems, which I do. I using it for ARC layer. Even with this in place under heavy load the kernel panics, because memory with KM_SLEEP

> Bug ID: 6398177 > Synopsis: zfs: poor nightly build performance in 32-bit mode (high disk activity) Part of the problem appear to be these kmem_caches: # mdb -k ... > ::kmastat cache buf buf buf memory alloc alloc name size in use total in use succeed fail ------------------------- ------ ------ ------ ---------

Hello. We''re currently using a Sun Blade1000 (2x750MHz, 1G ram, 2x160MB/s mpt scsi buses, skge GigE network) as a NFS backend with ZFS for distribution of free software like Debian (cdimage.debian.org, ftp.se.debian.org) and have run into some performance issues. We are running SX snv_48 and have run with a raidz2 with 7x300G for a while now, just added another 7x300G raidz2 today but

I have some questions about the choice of SSDs to use for ZIL and L2ARC. I''m trying to build an OpenSolaris iSCSI SAN out of a whitebox system, which is intended to be used as a backup SAN during storage migration, so it''s built on a tight budget. The system currently has 4GB RAM, 3GHz Core2-Quad and 8x 500GB WD REII SATA HDDs attached to an Areca 8port ARC-1220 controller

Hey Guys and Gals, I'm wondering if the quotas.c file is supposed to fix the problem where a Linux x86 system running with the quota software causes corrupt files to be written by Windows clients. I compiled it in and it didn't seem to make a difference for the following problem. In other words, if I enable quotas on my RH6.2 / 2.2.16-22 kernel box and then write a file via Samba/Windows

Has anyone else noticed a significant zfs performance deterioration when running recent opensolaris bits? My 32-bit / 768 MB Toshiba Tecra S1 notebook was able to do a full opensolaris release build in ~ 4 hours 45 minutes (gcc shadow compilation disabled; using an lzjb compressed zpool / zfs on a single notebook hdd p-ata drive). After upgrading to 2007-05-25 opensolaris release bits

Hi, First time I try ro resolve a domain user after samba/winbind is started, it takes a couple of seconds during which winbind says the following Received packet for \MAILSLOT\NET\GETDC700000A GetDC got invalid response type 21 Received packet for \MAILSLOT\NET\GETDC700000A GetDC got invalid response type 21 Received packet for \MAILSLOT\NET\GETDC700000A GetDC got invalid response type 21

I began with Samba 1.9.18.p10. on SunOs 5.6. I try backup PC(Windows95) with this: smbclient \\\\pcbig\\test .. .. smb:\> recurse smb:\> directory recursion is now on smb:\> tar c /dev/rmt/0 .... Until it is OK. But restore has error: smb:\> tar x /dev/rmt/0 smb:\> restore tar file \test1.txt of size 70 bytes smb:\> Updating creation date on \testfolder1\ smb:\> ERRDOS - 50