Date: Tue, 21 Jul 2020 02:14:42 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: mike tancsa <mike@sentex.net>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: zfs meta data slowness Message-ID: <fbd527f1-7802-9cba-bdbf-8d68e8574998@grosbein.net> In-Reply-To: <b6d670e6-6e35-a1f7-7daf-76b458f26e30@sentex.net> References: <b6d670e6-6e35-a1f7-7daf-76b458f26e30@sentex.net>
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19.07.2020 21:17, mike tancsa wrote: > Are there any tweaks that can be done to speed up or improve zfs > metadata performance ? I have a backup server with a lot of snapshots > (40,000) and just doing a listing can take a great deal of time. Best > case scenario is about 24 seconds, worst case, I have seen it up to 15 > minutes. (FreeBSD 12.1-STABLE r363078) I believe you have to perform kernel profiling for your specific use case.
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