search for: kmastat

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

...ads. So: is there any way to find out what is consuming the memory and causing the ARC to shrink (and/or to reset its target size, since arcstat.pl reports reports that ''c'', the ARC target size, is also 2GB)? I''ve looked at ps, which shows no large processes, I have a ::kmastat dump from mdb (but I don''t know much about how to read it), top still reports that the system has 8 GB, and vmstat says that there is 1 GB of free memory and no paging activity. Also, is there any way to force-reset the size of the ARC on a live system, so I could at least periodically k...

Hello All. I was looking for some existing script(s) that allow a person to select a kmastat cache, for example streams_dblk_1936, and find out what ever one of the allocations belongs to. I looked over the ToolKit but do not see any such thing, and so I thought I''d ping this alias for some input. Any thoughts or suggestions appreciated. Regards Daniel Ellison Sun Microsystems...

> 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 ------------------------- ------ ------ ------ --------- --------- ----- ... dmu_buf_impl_t 192 2029 104328 20348928 326434 0 dno...

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

I''ve been testing ZFS since it came out on b27 and this week I BFUed to b30. I''ve seen two problems, one I''ll call minor and the other major. The hardware is a Dell PowerEdge 2600 with 2 3.2GHz Xeons, 2GB memory and a perc3 controller. I have created a filesystem for over 1000 users on it and take hourly snapshots, which destroy the one from 24 hours ago, except the