Date: Thu, 23 Jan 2020 12:45:28 +0100 (CET) From: Wojciech Puchar <wojtek@puchar.net> To: Wojciech Puchar <wojtek@puchar.net> Cc: freebsd-hackers@freebsd.org Subject: Re: slow directory operation on huge dirs Message-ID: <alpine.BSF.2.20.2001231245190.98419@puchar.net> In-Reply-To: <alpine.BSF.2.20.2001191930040.17538@puchar.net> References: <alpine.BSF.2.20.2001191930040.17538@puchar.net>
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On Sun, 19 Jan 2020, Wojciech Puchar wrote: > i have UFS_DIRHASH enabled and enough large dirhash_maxmem > yet when there is heavy I/O on large directory (like dovecot indexing so it > reads every file) it randomly works fast or slow. Most often slow. > Whole system slows down, and system cpu usage gets above 50% on quad core > Xeon. > > lowering maxvnodes from 500000 to 100000 "fixes" the problem. > > what is going on here? > > 11.3-STABLE from maybe 2 weeks ago. > nobody have idea what's the problem?
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