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810
Monitoring usage/activity of XtremCache
Hello is there a way to see the usage/activity of the XtremeCache ?
I have added a 256GB NVMe on my SDS and I'm wondering if there are used and active or should I reuse them as a new NVMe tiering.
Matas1
22 Posts
0
February 22nd, 2017 06:00
Hello, if you have scaleio GUI, you can check how cache is used under: Banckend -> Read Flash Cache
Erik_Bussink
4 Posts
0
February 16th, 2017 06:00
What I really meant was the RFCache and not the XtremCache.
I was able to use scli --query_properties --object_type SYSTEM --all_objects --preset ALL
and retrieve the following data back
RFCACHE_READS_RECEIVED 97429930
RFCACHE_WRITES_RECEIVED 1231825021
RFCACHE_AVG_READ_TIME 273651
RFCACHE_AVG_WRITE_TIME 250883
RFCACHE_SOURCE_DEVICE_READS 2538019
RFCACHE_SOURCE_DEVICE_WRITES 1231825020
RFCACHE_READ_HIT 60043259
RFCACHE_READ_MISS 7084548
RFCACHE_WRITE_HIT 147055545
RFCACHE_WRITE_MISS 1084769475
RFCACHE_IOS_SKIPPED 1119682161
RFCACHE_READS_SKIPPED 34848652
RFCACHE_READS_SKIPPED_ALIGNED_SIZE_TOO_LARGE 4546529
RFCACHE_READS_SKIPPED_MAX_IO_SIZE 22816806
RFCACHE_READS_SKIPPED_HEAVY_LOAD 0
RFCACHE_READS_SKIPPED_STUCK_IO 0
RFCACHE_READS_SKIPPED_LOW_RESOURCES 0
RFCACHE_READS_SKIPPED_INTERNAL_ERROR 0
RFCACHE_READS_SKIPPED_LOCK_IOS 7485317
RFCACHE_WRITES_SKIPPED_MAX_IO_SIZE 22312245
RFCACHE_WRITES_SKIPPED_HEAVY_LOAD 0
RFCACHE_WRITES_SKIPPED_STUCK_IO 0
RFCACHE_WRITES_SKIPPED_LOW_RESOURCES 0
RFCACHE_WRITES_SKIPPED_INTERNAL_ERROR 0
RFCACHE_WRITES_SKIPPED_CACHE_MISS 1084769475
RFCACHE_SKIPPED_UNALIGNED_WRITE 0
RFCACHE_IO_ERRORS 0
RFCACHE_READS_FROM_CACHE 60043259
RFCACHE_IOS_OUTSTANDING 4
RFCACHE_READS_PENDING 0
RFCACHE_WRITE_PENDING 1
RFCACHE_FD_READS_RECEIVED 0
RFCACHE_FD_WRITES_RECEIVED 0
RFCACHE_FD_INFLIGHT_READS 0
RFCACHE_FD_INFLIGHT_WRITES 0
RFCACHE_FD_READ_TIME_GREATER_500_MILLI 0
RFCACHE_FD_READ_TIME_GREATER_1_SEC 0
RFCACHE_FD_READ_TIME_GREATER_5_SEC 0
RFCACHE_FD_READ_TIME_GREATER_1_MIN 0
RFCACHE_FD_WRITE_TIME_GREATER_500_MILLI 0
RFCACHE_FD_WRITE_TIME_GREATER_1_SEC 0
RFCACHE_FD_WRITE_TIME_GREATER_5_SEC 0
RFCACHE_FD_WRITE_TIME_GREATER_1_MIN 0
RFCACHE_FD_AVG_READ_TIME 0
RFCACHE_FD_AVG_WRITE_TIME 0
RFCACHE_FD_IO_ERRORS 0
RFCACHE_FD_CACHE_OVERLOADED 0
RFCACHE_FD_MONITOR_ERROR_STUCK_IO 0
RFCACHE_POOL_NUM_SRC_DEVS 13
RFCACHE_POOL_NUM_CACHE_DEVS 8
RFCACHE_POOL_SIZE 1320642560
RFCACHE_POOL_READ_HIT 64502108
RFCACHE_POOL_READ_MISS 14965457
RFCACHE_POOL_WRITE_HIT 151356911
RFCACHE_POOL_WRITE_MISS 1423850599
RFCACHE_POOL_CACHE_PAGES 20635040
RFCACHE_POOL_PAGES_INUSE 13506524
RFCACHE_POOL_EVICTIONS 2
RFCACHE_POOL_IN_LOW_MEMORY_CONDITION 0
RFCACHE_POOL_IO_TIME_GREATER_1_MIN 0
RFCACHE_POOL_LOCK_TIME_GREATER_1_SEC 1319
RFCACHE_POOL_SUSPENDED_IOS 1
RFCACHE_POOL_LOW_RESOURCES_INITIATED_PASSTHROUGH_MODE 0
RFCACHE_POOL_IOS_OUTSTANDING 4
RFCACHE_POOL_READS_PENDING 0
RFCACHE_POOL_WRITE_PENDING 1
RFCACHE_POOL_SUSPENDED_REQUESTS_REDUNDANT_SEARCHES 1922404
RFCACHE_POOL_READ_PENDING_G_1_SEC 0
RFCACHE_POOL_READ_PENDING_G_10_MILLI 1
RFCACHE_POOL_READ_PENDING_G_1_MILLI 67
RFCACHE_POOL_READ_PENDING_G_500_MICRO 166
RFCACHE_POOL_WRITE_PENDING_G_1_SEC 0
RFCACHE_POOL_WRITE_PENDING_G_10_MILLI 0
RFCACHE_POOL_WRITE_PENDING_G_1_MILLI 1319
RFCACHE_POOL_WRITE_PENDING_G_500_MICRO 143473
RFCACHE_POOL_SOURCE_ID_MISMATCH 0
Erik_Bussink
4 Posts
0
February 22nd, 2017 12:00
Thanks a lot Matas. That Read Flash Cache info had escaped me...