mhh, i received the last answer via mail and did a reply via mail, but it seems that it did not get to this list.
so i repost via web: -------------------------------------------------------------------------- > are you still having an issue with this? yes the issue still exists. even worse, meanwhile i had long-term stability issues with that system. after one week of operation and several hundreds of gb of data transfer (read & write), the system stalled completely. this happend 3 or 4 times now. i could still ping it, but nothing more. no login from remote and no local login. before power-cycle on console there was some message from idmap "GSSAPI error - not specified GSS error....." so i run some process monitoring and after 2 days of operation, i suspect idmap is leaking memory, at least it looks so - vsz and rss of /usr/lib/idmapd grew by ~23mb, where vsz is growing almost linear. ok, different issue - i have disabled the service, stopped the reboot and we will see if this is the root-cause of those hangs.... until today, this issue made me think that this is somewhat related to the read issue, but i think we have a completely different kind of problem here, as the system typically behaved like a box which is out of memory. > it seems to me that the LSI > megaraid is having some issues with a higher queue depth .. by > limiting the device queue (vdev_max_pending) or file prefetch queue to > 1 you're making the problem go away yes, i think it`s something like this. if it`s a problem very specific to this controller brand, i`m just ok with someone from sun telling "there`s nothing we can do, please contact the vendor", but i suspect a bug in the driver or even zfs layer. > also the "page83 not standards compliant" message has to do with what > the vendor reports for the array controller (VPD = vendor product > data .. page83 tells us some useful information about multipathing) .. > do you have MPxIO enabled or no? This is going to push the problem > down to the sd device, but it seems like you're saying that reads here > are acceptable. no, i don`t use MPxIO - at least i don`t know that i`m using it. it`s ordinary local raid5 storage (internal disks). to be 100% sure you may tell what i should check for. thanks again regards roland -- This message posted from opensolaris.org _______________________________________________ perf-discuss mailing list perf-discuss@opensolaris.org
