Alexander Motin 3c0177b887 Enable bioq 'car limit' added at r335066 at 128 bios. ... Without the 'car limit' enabled (before this), running sequential ZFS scrub on HDD without command queuing support, I've measured latency on concurrent random reads reaching 4 seconds (surprised that not more). Enabling this reduced the latency to 65 milliseconds, while scrub still doing ~180MB/s. For disks with command queuing this does not make much difference (if any), since most time all the requests are queued down to the disk or HBA, leaving nothing in the queue to sort. And even if something does not fit, staying on the queue, it is likely not for long. To not limit sorting in such bursty scenarios I've added batched counter zeroing when the queue is getting empty. The internal scheduler of the SAS HDD I was testing seems to be even more loyal to random I/O, reducing the scrub speed to ~120MB/s. So in case somebody worried this is limit is too strict -- it actually looks relaxed. MFC after: 2 weeks Sponsored by: iXsystems, Inc.		2020-10-26 04:04:06 +00:00
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amd64	Improve FPU Tag Word reconstruction on i386 to indicate register states.	2020-10-21 00:15:12 +00:00
arm	Simplify preload_dump() condition	2020-10-15 20:21:15 +00:00
arm64	Add IOMMU support to GICv3 Interrupt Translation Service (ITS) driver.	2020-10-25 10:08:46 +00:00
bsm	bsm: add AUE_CLOSERANGE	2020-04-24 01:27:25 +00:00
cam	Introduce support of SCSI Command Priority.	2020-10-25 19:34:02 +00:00
cddl	Fix build after r367020	2020-10-24 23:21:51 +00:00
compat	audit: correct reporting of *execve(2) success	2020-10-24 14:39:17 +00:00
conf	backlight(9): compile with COMPAT_LINUXKPI as well	2020-10-24 15:38:04 +00:00
contrib	Skip RAW kstat sysctls by default	2020-10-24 16:25:52 +00:00
crypto	Add a new CCP device ID found on my Ryzen 5 3600XT.	2020-10-22 17:46:55 +00:00
ddb	ddb: clean up empty lines in .c and .h files	2020-09-01 22:14:30 +00:00
dev	Introduce support of SCSI Command Priority.	2020-10-25 19:34:02 +00:00
dts	Brand our DTS with the Linux version it was imported from	2020-10-10 07:18:51 +00:00
fs	vfs: drop spurious cache_purge on rmdir	2020-10-23 15:50:49 +00:00
gdb	gdb(4): Don't escape GDB special characters at application layer	2020-09-30 14:55:54 +00:00
geom	Fix asymmetry in devstat(9) calls by GEOM.	2020-10-24 21:07:10 +00:00
gnu	Brand our DTS with the Linux version it was imported from	2020-10-10 07:18:51 +00:00
i386	Remove support for intel compiler from i386 in_cksum	2020-10-24 23:21:27 +00:00
isa
kern	Enable bioq 'car limit' added at r335066 at 128 bios.	2020-10-26 04:04:06 +00:00
kgssapi	State kgssapi dependency on xdr.	2020-09-17 22:29:38 +00:00
libkern	arc4random(9): Integrate with RANDOM_FENESTRASX push-reseed	2020-10-10 21:48:06 +00:00
mips	Avoid dump_avail[] redefinition.	2020-10-14 22:51:40 +00:00
modules	Factor out generic IP over infiniband, IPoIB, definitions and code	2020-10-22 09:09:53 +00:00
net	More style fixes (partial revert of r366994).	2020-10-24 13:07:50 +00:00
net80211	net80211: factor out the priv(9) checks into OS specifc code.	2020-10-18 21:34:04 +00:00
netgraph	ng_l2tp: Fix callout synchronization in the rexmit timeout handler	2020-09-25 18:55:50 +00:00
netinet	TCP Cubic: improve reaction to (and rollback from) RTO	2020-10-24 16:11:46 +00:00
netinet6	icmp6: Count packets dropped due to an invalid hop limit	2020-10-19 17:07:19 +00:00
netipsec	Trigger soft lifetime expiration on sequence number	2020-10-16 11:27:01 +00:00
netpfil	Add dtrace SDT probe ipfw:::rule-matched.	2020-10-21 15:01:33 +00:00
netsmb	net: clean up empty lines in .c and .h files	2020-09-01 21:19:14 +00:00
nfs	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nfsclient	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nfsserver	nfs: clean up empty lines in .c and .h files	2020-09-01 21:25:39 +00:00
nlm	nlm: clean up empty lines in .c and .h files	2020-09-01 22:14:52 +00:00
ofed	Factor out generic IP over infiniband, IPoIB, definitions and code	2020-10-22 09:09:53 +00:00
opencrypto	Fix a couple of bugs for asym crypto introduced in r359374.	2020-10-19 20:04:03 +00:00
powerpc	Avoid dump_avail[] redefinition.	2020-10-14 22:51:40 +00:00
riscv	riscv: improve exception code naming	2020-10-24 20:57:13 +00:00
rpc	Fix a potential memory leak in the NFS over TLS handling code.	2020-09-05 00:50:52 +00:00
security	mac_framework.h: fix build with DEBUG_VFS_LOCKS and !MAC	2020-09-03 20:30:52 +00:00
sys	cdefs.h: remove intel_compiler support	2020-10-24 23:21:31 +00:00
teken	Do a sweep and remove most WARNS=6 settings	2020-10-01 01:10:51 +00:00
tests	Add small tool to invoke kernel test framework tests.	2020-09-02 09:20:40 +00:00
tools	Brand our DTS with the Linux version it was imported from	2020-10-10 07:18:51 +00:00
ufs	Various new check-hash checks have been added to the UFS filesystem	2020-10-25 00:43:48 +00:00
vm	Conditionally compile struct vm_phys_seg's md_first field. This field is	2020-10-23 06:24:38 +00:00
x86	Move the iommu stubs to a generic place, so they are available on all the	2020-10-23 21:27:48 +00:00
xdr	xdr: clean up empty lines in .c and .h files	2020-09-01 22:13:28 +00:00
xen	xen: clean up empty lines in .c and .h files	2020-09-01 21:21:55 +00:00
Makefile