greg/stasis-bLSM
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169 commits 1 branch 0 tags 670 KiB
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36 commits

Author SHA1 Message Date
sears
43425128ba clean up initialization / marshalling code. Lets some of the public mergeStat fields to be protected 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1490 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-12-14 00:06:32 +00:00
sears
eb4446f409 readability fix: fields in mergeStats that are only used for computing extended stats for pretty print are now prefixed with "stats_", and can be optionally disabled at compile time 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1489 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-12-13 22:27:13 +00:00
sears
7e44641799 move c1-c2 backpresure to linear backpressure model; removes a few hundred lines of fussy code, and should enable further simplifiactions 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1488 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-12-13 21:17:35 +00:00
sears
347a4126f3 remove the NO_SNOWSHOVEL c-preprocessor stuff. There is no way it was working anyway... 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1480 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-12-11 01:04:33 +00:00
sears
a00531ae6d simplified merge_scheduler 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1479 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-12-11 00:51:19 +00:00
sears
79936da79b loosen some scheduling parameters 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1467 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-12-08 19:46:55 +00:00
sears
a1f3f92cca added bulk-insert APIs, prevent c1-c2 from outrunning c0-c1 by too much, and fix the overshoot computations in merge manager (roughly corresponds to run 20) 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1074 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-30 22:22:25 +00:00
sears
f8248240af calculate c0->current_size more eagerly 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1058 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-25 16:36:17 +00:00
sears
960ff041e2 remove old comments 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1055 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-24 00:40:48 +00:00
sears
6fd7dd0523 cleaned up some code, moved pretty_print into its own thread, and fixed some buggy stats computations 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1054 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-23 23:28:29 +00:00
sears
98b88a227b fixed some statistics computations. They are still wrong. It crashes for an unknown reason. However, this version sometimes breaks 10K op/s for loads, and 1K op/s for workloada 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1047 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-23 17:11:31 +00:00
sears
bcea21c06a fixed memory bug in client scams; better debugging status during merge backpressure 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1046 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-21 03:30:12 +00:00
sears
07b35f4e20 scattered, and poorly tested fixes. finer grained latching for tree nodes; throttle c0-c1 merge when c0 is small; fix delta computations for c0 throttling; disable short pauses for c1-c2 merge. this gets the bulk load throughput up to 8500, but workloada is still slow 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1045 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-21 03:09:18 +00:00
sears
b894cebaf7 add memTreeComponent::batchedRevalidatingIterator; amortize cost of red black latching during merge 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1017 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-18 17:29:25 +00:00
sears
1e487bbc54 re-enable old merge policy for c1-c2 merger; implement shutdown (sort of) 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@1006 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-17 21:23:39 +00:00
sears
dc75f6d1f0 Implemented snowshoveling, with caveats. 
This commit includes concurrency control for datapages, the new backpressure for the c0-c1 merger, and (untested) support for defining NO_SNOWSHOVEL, and using the old approach.

There are a number of important limitations:
 - statistics gathering is somewhat messed up
 - the c0-c1 merge thread polls for new data
 - on a sequential write, if the writers stall, the merge thread could empty memory and initiate an unnecessary merge.  Instead, we should never finish a merge if c0 is less than N% full
 - this commit introduces yet another batch of nasty mutex contention issues



git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@955 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-08-05 17:43:46 +00:00
sears
7bed4b67ba fix a bunch of 64-bit integer signedness bugs 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@940 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-07-16 21:43:21 +00:00
sears
9dcb624649 improved bps estimation; add "minisleeps" to update_progress; they do not belong there long term, but this is better than nothing 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@929 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-07-14 21:46:27 +00:00
sears
cf6c6e5955 incease UPDATE_PROGRESS_DELTA by 10x, and FORCE_INTERVAL by 2.5x; tick no longer grabs a writelock on header_mut, and instead uses its own mutex 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@870 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-21 22:59:05 +00:00
sears
118ae94a9b cleaned up comments; upped force_interval to 10mb 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@864 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-18 23:52:17 +00:00
sears
1c02dc1281 add overshoot2 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@863 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-18 23:44:48 +00:00
sears
8c35a1265a fix bug in overshoot_fudge computation; reduce number of knobs 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@860 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-18 23:00:23 +00:00
sears
eda7c0fd12 enable force interval; play with some knobs 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@854 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-18 02:07:55 +00:00
sears
2530009ec0 fix deadlock; do not clear need_tick bit until overshoot is less than zero; tweak constants accordingly (fewer mutex acquistions! less blockage!) 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@852 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-18 00:06:46 +00:00
sears
0a2c4796a8 removed bad assert 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@843 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-17 05:05:35 +00:00
sears
0fb644640a improved concurrency for merger. not happy with worst case write latency on my dev machine anymore (seems to be less than 2.5 seconds, up from less than 1). 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@842 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-17 04:49:19 +00:00
sears
0ecd7491c7 fix minor stats bugs; pull most stats computation into update_progress. The idea is that update_progress and tick, which are easily amortized, are the only stats things that need to grab latches 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@827 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-05 00:41:52 +00:00
sears
fe7ce3a785 tweak some constants to silence latency sla warnings 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@825 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-03 00:12:31 +00:00
sears
eda514ddaa amortize the computation of statistics (but not mutex acuqisitions) across many tuple insertions. Also, refactor stats stuff with latch contention in mind (but it still grabs too many latches...). This commit causes check_tcpclient to emit warnings on my machine. Not sure if it will happen on production hardware 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@824 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-06-02 21:47:58 +00:00
sears
fcf0dcca99 cleanup / reimplement some of the statistics calculations. dial back periodically_force 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@821 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-05-28 21:20:26 +00:00
sears
d981d91dfa numerous bugfixes; rate limit progress meter display 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@816 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-05-27 23:15:24 +00:00
sears
6eecf1557a restore support for concurrent disk reads; logserver was accidentally using a findTuple function that assumed diffs. This commit uses rwlc, and requires Stasis -r1393 or better 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@814 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-05-27 01:49:27 +00:00
sears
0e375c005b more merge tweaks 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@813 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-05-26 23:53:21 +00:00
sears
aa7f7189d6 admission control *almost* works; c1 sometimes blocks for a long time when a new c2 is created 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@809 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-05-26 00:58:17 +00:00
sears
c50c14d259 admission control is now behaving properly (but there are still no concurrent writes, or bounds on how long admission control throttles a given writer) 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@806 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-05-21 23:43:17 +00:00
sears
2a1157602a Rewrite merge thread synchronization code, update status messages, implement preliminary (and ineffective) admission control, and force write merged data every megabyte (so that prograess can be tracked by admission control. Also, refactor quite a few things. 
git-svn-id: svn+ssh://svn.corp.yahoo.com/yahoo/yrl/labs/pnuts/code/logstore@805 8dad8b1f-cf64-0410-95b6-bcf113ffbcfe
 2010-05-19 23:42:06 +00:00