PFSELFTEST: less false positives.
PFSELFTEST: less false positives.

This is just a quickfix, for the nature of the test the right way to fix
it is to average the error of N runs, since otherwise it is always
possible to get a false positive with a bad run, or to minimize too much
this possibility we may end testing with too much "large" error ranges.

HunanTV/redis,ttuna/msot-redis,slfs007/mk-redis,jxwr/redis,MSOpenTech/redis,ksarch-saas/redis,maodeyi/redis_lua,slfs007/mk-redis,splitice/redis,louisliangjun/redis,ramonsnir/redis,splitice/redis,MSOpenTech/redis,xuzhezhaozhao/redis_reading,ramonsnir/redis,darksideofthemoo/redis-histogram,maodeyi/redis_lua,jxwr/redis,darksideofthemoo/redis-histogram,splitice/redis,MSOpenTech/redis,HunanTV/redis,ksarch-saas/redis,louisliangjun/redis,himoca/redis,MSOpenTech/redis,ksarch-saas/redis,ttuna/msot-redis,slfs007/mk-redis,splitice/redis,xuzhezhaozhao/redis_reading,louisliangjun/redis,darksideofthemoo/redis-histogram,ttuna/msot-redis,xuzhezhaozhao/redis_reading,spearhead-ea/redis,ksarch-saas/redis,jxwr/redis,xuzhezhaozhao/redis_reading,HunanTV/redis,ttuna/msot-redis,maodeyi/redis_lua,spearhead-ea/redis,himoca/redis,louisliangjun/redis,himoca/redis,ttuna/msot-redis,darksideofthemoo/redis-histogram,HunanTV/redis,ramonsnir/redis,spearhead-ea/redis,MSOpenTech/redis