… 640 MiB/sec level and it is higher than previously. Sync random reads per threads, throughput: Response time: Again, there is…
Post: Testing Virident FlashMAX 1400
May 4, 2012 By 3 Comments
… see that 1450 MiB/sec is not quite achievable in sync mode, and only 64 threads are getting close. Response time…
Post: Testing Fusion-io ioDrive
May 3, 2012 By 1 Comment
…. It gets even more interesting when we go to read sync IO, with 1-64 threads. Throughput: Response time: For same…
Comment: Testing Intel SSD 520
May 2, 2012 By 7 Comments
Vadim, I see you measured response time distribution for reads in sync mode but only Throughput every 10 seconds for random writes. Any reason for that ?
Comment: Testing Samsung SSD SATA 256GB 830 - not all SSD created equal
April 26, 2012 By 10 Comments
Peter, Take look on random read sync case with 1-2 threads. In this case the card is not fully loaded, but there are still periodic stalls.
Comment: Percona XtraDB Cluster Feature 2: Multi-Master replication
April 1, 2012 By 16 Comments
…) requested state transfer from ‘*any*’. Selected 0 (ubuntu-server-128)(SYNCED) as donor. Apr 1 14:14:26 ubuntu-server-129… 14:14:27 [Note] WSREP: Member 1 (ubuntu-server-129) synced with group. Apr 1 14:14:27 ubuntu-server-129 mysqld: 120401 14:14:27 [Note] WSREP: Shifting JOINED -> SYNCED (TO: 5010) Apr 1 14:14:27 ubuntu-server-129…
Comment: ext4 vs xfs on SSD
March 25, 2012 By 23 Comments
… numbers are throughput /IOPS, with throughput being in GB/s sync async threads throughput throughput XFS ext4 XFS ext4 1 1… ported to 3.4-pre-RC1, the XFS results are: sync async threads throughput throughput vanilla patched vanilla patched 1 1…
Post: ext4 vs xfs on SSD
March 15, 2012 By 23 Comments
…=fileio –file-num=1 –file-total-size=${size}G prepare sync echo 3 > /proc/sys/vm/drop_caches for numthreads in…-extra-flags=direct –file-fsync-freq=0 –file-io-mode=sync –file-block-size=16384 –report-interval=10 run | tee -a…
Comment: Resyncing table on MySQL Slave
March 5, 2012 By 10 Comments
question: Does mk-table-sync locks master table while sync slave tables against master? what about mk-table-checksum, does that lock master table too?
Post: Testing STEC SSD MACH16 200GB SLC
April 25, 2012 By 7 Comments
… of response time we should expect, I ran random read sync IO mode, now for 1-64 threads. The throughput: We…
