So I have this dual 16-core Opteron Dell R715 with 128G of RAM attached
to a SuperMicro disk enclosure with 45 2TB Toshiba SAS drives (via two
LSI 9200 controllers and MPxIO) running OpenIndiana 151a4 and I'm
occasionally seeing a storm of xcalls on one of the 32 VCPUs (10
xcalls a second).
On Jun 6, 2012, at 12:48 AM, Sašo Kiselkov wrote:
So I have this dual 16-core Opteron Dell R715 with 128G of RAM attached
to a SuperMicro disk enclosure with 45 2TB Toshiba SAS drives (via two
LSI 9200 controllers and MPxIO) running OpenIndiana 151a4 and I'm
occasionally seeing a storm of
On 06/06/2012 04:55 PM, Richard Elling wrote:
On Jun 6, 2012, at 12:48 AM, Sašo Kiselkov wrote:
So I have this dual 16-core Opteron Dell R715 with 128G of RAM attached
to a SuperMicro disk enclosure with 45 2TB Toshiba SAS drives (via two
LSI 9200 controllers and MPxIO) running OpenIndiana
On 06/06/2012 05:01 PM, Sašo Kiselkov wrote:
I'll try and load the machine with dd(1) to the max to see if access
patterns of my software have something to do with it.
Tried and tested, any and all write I/O to the pool causes this xcall
storm issue, writing more data to it only exacerbates it
On Jun 6, 2012, at 8:01 AM, Sašo Kiselkov wrote:
On 06/06/2012 04:55 PM, Richard Elling wrote:
On Jun 6, 2012, at 12:48 AM, Sašo Kiselkov wrote:
So I have this dual 16-core Opteron Dell R715 with 128G of RAM attached
to a SuperMicro disk enclosure with 45 2TB Toshiba SAS drives (via two
On Jun 6, 2012, at 8:22 AM, Sašo Kiselkov wrote:
On 06/06/2012 05:01 PM, Sašo Kiselkov wrote:
I'll try and load the machine with dd(1) to the max to see if access
patterns of my software have something to do with it.
Tried and tested, any and all write I/O to the pool causes this xcall
I can't help but be curious about something, which perhaps you verified but
did not post.
What the data here shows is;
- CPU 31 is buried in the kernel (100% sys).
- CPU 31 is handling a moderate-to-high rate of xcalls.
What the data does not prove empirically is that the 100% sys time of
CPU
On 06/06/2012 09:43 PM, Jim Mauro wrote:
I can't help but be curious about something, which perhaps you verified but
did not post.
What the data here shows is;
- CPU 31 is buried in the kernel (100% sys).
- CPU 31 is handling a moderate-to-high rate of xcalls.
What the data does not
