similar to: kernel memory and zfs

Hey all - Just a quick one... Is there any plan to update the mdb ::memstat dcmd to present ZFS buffers as part of the summary? At present, we get something like: > ::memstat Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 28859 112 13% Anon 34230

Hello. I have a Solaris 11/11 x86 box (which I migrated from SolEx 11/10 a couple of weeks ago). Without no obvious reason (at least for me), after an uptime of 1 to 2 days (observed 3 times now) Solaris sets arc_no_grow to 1 and then never sets it back to 0. ARC is being shrunk to less than 1 GB -- needless to say that performance is terrible. There is not much load on this system. Memory

Hello, ZFS is behaving strange on a OSOL laptop, your thoughts are welcome. I am running OSOL on my laptop, currently b124 and i found that the performance of ZFS is not optimal in all situations. If i check the how much space the package cache for pkg(1) uses, it takes a bit longer on this host than on comparable machine to which i transferred all the data. user at host:/var/pkg$ time

Hi, Please forgive me if my searching-fu has failed me in this case, but I''ve been unable to find any information on how people are going about monitoring and alerting regarding memory usage on Solaris hosts using ZFS. The problem is not that the ZFS ARC is using up the memory, but that the script Nagios is using to check memory usage simply sees, say 96% RAM used, and alerts. The

Hi, Can I use DTrace to determine memory status? 1.Total Physical Memory, Used Memory. 2.Total Swap Space and Used Swap Space. I did find few DTrace scripts but had too much in them and I am unable to chop off unwanted lines of code due to lack of knowledge. It will be very helpful if some one can share the piece of code that serves my purpose as mentioned above. Regards, Ramesh. Ramesh

Would someone "in the know" be willing to write up (preferably blog) definitive definitions/explanations of all the arcstats provided via kstat? I''m struggling with proper interpretation of certain values, namely "p", "memory_throttle_count", and the mru/mfu+ghost hit vs demand/prefetch hit counters. I think I''ve got it figured out, but

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

Not an really good subject, I know but that''s kind of what happend. I''m trying to build an backup-solution server, Windows users using OSCAR (which uses rsync) to sync their files to an folder and when complete takes a snapshot. It has worked before but then I turned on the -R switch to rsync and when I then removed the folder with rm -rf it crashed. I didn''t save what

Is it possible to use DTrace to display the number of arguments and their types for userland or kernel functions that are not explicitly instrumented or documented by their authors? We''re talking about functions provided by Veritas VxVM/VxFS and the like, and for example, we might want to try tracing I/Os from App => VxFS => VxVM => ssd driver to see where I/Os get aggregated or

We seem to be having write issues with zfs, does anyone see anything in the following: bash-3.00# kstat -p -n arcstats zfs:0:arcstats:c 655251456 zfs:0:arcstats:c_max 5242011648 zfs:0:arcstats:c_min 655251456 zfs:0:arcstats:class misc zfs:0:arcstats:crtime 5699201.4918501 zfs:0:arcstats:data_size 331404288 zfs:0:arcstats:deleted 408216 zfs:0:arcstats:demand_data_hits

Hi ZFSers, I''ve been working on merging the Joyent arcstat enhancements with some of my own and am now to the point where it is time to broaden the requirements gathering. The result is to be merged into the illumos tree. arcstat is a perl script to show the value of ARC kstats as they change over time. This is similar to the ideas behind mpstat, iostat, vmstat, and friends. The current

Can someone, more learned in the ways of dtrace point me at what to look at to help understand why the kernel on one machine is using tons of memory, while another machine doing the same task/same user load is not. swapinfo for the "afflicted" machine shows RAM _______Total 16384 Mb RAM Unusable 73 Mb RAM Kernel 9226 Mb RAM Locked 2 Mb RAM Used

I am trying to see how ZFS behaves under resource starvation - corner cases in embedded environments. I see some very strange behavior. Any help/explanation would really be appreciated. My current setup is : OpenSolaris 111b (iSCSI seems to be broken in 132 - unable to get multiple connections/mutlipathing) iSCSI Storage Array that is capable of 20 MB/s random writes @ 4k and 70 MB random reads

Hardware Supermicro X7DAE (AHCI BIOS) dual Intel Woodcrest processors, 6 x Western Digital Raptor SATA drives. I have installed b62 running 64 bit succesfully on a PATA drive. The BIOS is configured to access the SATA drives in native mode using hte AHCI Bios. I have 6 SATA II drives accessed via the Solaris AHCI driver. I have created a ZFS file system across all 6 drives. This works fine until

Hi, Given two disk c1t0d0 (DISK A) and c1t1d0 (DISK B)... 1/ Standard install on DISK A. 2/ zfs boot install on DISK B. 3/ I change the boot order and my zfs boot works fine. 4/ I install grub on the mbr of DISK B 5/ I disconnect and replace DISK A with DISK B 6/ Reboot, get the grub menu select Solaris ZFS and it panics that it cannot mount root path @ device XXX... This is not a ZFS

I have just recently (physically) moved a system with 16 hard drives (for the array) and 1 OS drive; and in doing so, I needed to pull out the 16 drives so that it would be light enough for me to lift. When I plugged the drives back in, initially, it went into a panic-reboot loop. After doing some digging, I deleted the file /etc/zfs/zpool.cache. When I try to import the pool using the zpool

Running an mmap-intensive workload on ZFS on a X4500, Solaris 10 11/06 (update 3). All file IO is mmap(file), read memory segment, unmap, close. Tweaked the arc size down via mdb to 1GB. I used that value because c_min was also 1GB, and I was not sure if c_max could be larger than c_min....Anyway, I set c_max to 1GB. After a workload run....: > arc::print -tad { . . . ffffffffc02e29e8

Hi I''ve installed Solaris snv111 in a QEMU virtual machine using qemu 0.10.2 with kqemu 1.4 enabled. The installation worked without problems but after rebooting from the virtual disk Solaris panics: qemu usage: /opt/qemu_0.10.x/bin/qemu-system-x86_64 -net user -net nic -usb -usbdevice tablet -L /usr/local/share/qemu_0.9.x -boot c -m 1024 -net nic,model=rtl8139 -net nic -net nic

We have a serious performance problem on our server. Here is some data: <pre> > ::memstat Page Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 1133252 4426 31% Anon 1956988 7644 53% Exec and libs 31104 121 1% Page cache

Recently I found that the mac_srs_rx_poll_ring thread may never stop in kernel, please see the following mpstat, cpu 2 is in 100% kernel usage, but no syscalls and no interrupts. CPU minf mjf xcal intr ithr csw icsw migr smtx srw syscl usr sys wt idl 0 0 0 0 300 100 0 0 1 0 0 0 0 0 0 100 1 14 0 0 134 68 134 1