ocr: Query Response Times for March 17-19 Utillzation for Morning of Tue, March 15 25 100 20 80 15 60; 10 48 20 0 0 6AM 12AM 6PM 12AM BAM 12PM 6AM 12AM 6AM 12PM SAM SAM 7AM BAM PAM 10AM FIGURE 2. Multiple I/Os of short duration ake a performance bottieneck.