It seems that current perf don't support Sar style output. However a very close emulation is possible with the help of watch command.
To collect counters periodically for the whole system, use the '-a' option. Below is an example of reporting the general hardware performance counters for every 60 seconds
watch -n 60 sudo perf stat -a sleep 60
It gives the output as
Every 10.0s: sudo perf stat -a sleep 10 Wed May 11 11:19:36 2011
Performance counter stats for 'sleep 10':
19956.091380 task-clock-msecs # 1.995 CPUs
26802 context-switches # 0.001 M/sec
1871 CPU-migrations # 0.000 M/sec
951 page-faults # 0.000 M/sec
4582605668 cycles # 229.634 M/sec (scaled from 69.93%)
1993617795 instructions # 0.435 IPC (scaled from 81.07%)
374028141 branches # 18.743 M/sec (scaled from 81.34%)
19071123 branch-misses # 5.099 % (scaled from 79.77%)
100724660 cache-references # 5.047 M/sec (scaled from 18.66%)
5461106 cache-misses # 0.274 M/sec (scaled from 20.23%)
10.001116547 seconds time elapsed
The usage of sleep command is a bit counter intuitive at first glance. Here the perf stat will NOT collect counters specific to sleep command ,instead sleep command simply act as a way to tell the perf stat the duration of collection(I realize that from the example in the perf wiki ) Note to collect system wise counters, administrative privilege is required, so the sudo before perf stat is necessary.
If you simply need collect counters specific to a running process(e.g., with pid 2785), then a sample command is
watch -n 60 perf stat -p 2785 sleep 60
Note this time, sudo is NOT required.